213 results on '"Lamarque, Laurent J"'
Search Results
2. The rates of starch depletion and hydraulic failure both play a role in drought-induced seedling mortality
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Trueba, Santiago, Muñoz, Noelia González, Burlett, Régis, Lamarque, Laurent J., Gibon, Yves, Gimeno, Teresa E., Kaisermann, Aurore, Benard, Camille, Lemaire, Cédric, Torres-Ruiz, Jose M., Wingate, Lisa, and Delzon, Sylvain
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- 2024
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3. Hydrological Regime and Plant Functional Traits Jointly Mediate the Influence of Salix spp. on Soil Organic Carbon Stocks in a High Arctic Tundra
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Lamarque, Laurent J., Félix-Faure, Jim, Deschamps, Lucas, Lévesque, Esther, Cusson, Pier-Olivier, Fortier, Daniel, Giacomazzo, Matteo, Guillemette, François, Paillassa, Jennifer, Tremblay, Maxime, and Maire, Vincent
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- 2023
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4. Plant traits poorly predict winner and loser shrub species in a warming tundra biome
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García Criado, Mariana, Myers-Smith, Isla H., Bjorkman, Anne D., Normand, Signe, Blach-Overgaard, Anne, Thomas, Haydn J. D., Eskelinen, Anu, Happonen, Konsta, Alatalo, Juha M., Anadon-Rosell, Alba, Aubin, Isabelle, te Beest, Mariska, Betway-May, Katlyn R., Blok, Daan, Buras, Allan, Cerabolini, Bruno E. L., Christie, Katherine, Cornelissen, J. Hans C., Forbes, Bruce C., Frei, Esther R., Grogan, Paul, Hermanutz, Luise, Hollister, Robert D., Hudson, James, Iturrate-Garcia, Maitane, Kaarlejärvi, Elina, Kleyer, Michael, Lamarque, Laurent J., Lembrechts, Jonas J., Lévesque, Esther, Luoto, Miska, Macek, Petr, May, Jeremy L., Prevéy, Janet S., Schaepman-Strub, Gabriela, Sheremetiev, Serge N., Siegwart Collier, Laura, Soudzilovskaia, Nadejda A., Trant, Andrew, Venn, Susanna E., and Virkkala, Anna-Maria
- Published
- 2023
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5. Quantifying the grapevine xylem embolism resistance spectrum to identify varieties and regions at risk in a future dry climate
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Lamarque, Laurent J., Delmas, Chloé E. L., Charrier, Guillaume, Burlett, Régis, Dell’Acqua, Ninon, Pouzoulet, Jérôme, Gambetta, Gregory A., and Delzon, Sylvain
- Published
- 2023
- Full Text
- View/download PDF
6. Evolutionary relationships between drought-related traits and climate shape large hydraulic safety margins in western North American oaks.
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Skelton, Robert P, Anderegg, Leander DL, Diaz, Jessica, Kling, Matthew M, Papper, Prahlad, Lamarque, Laurent J, Delzon, Sylvain, Dawson, Todd E, and Ackerly, David D
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Quercus ,Plant Leaves ,Dehydration ,Phylogeny ,North America ,Biological Evolution ,Disease Resistance ,drought tolerance ,embolism avoidance hypothesis ,hydraulic safety margins ,plant hydraulic function ,xylem embolism - Abstract
Quantitative knowledge of xylem physical tolerance limits to dehydration is essential to understanding plant drought tolerance but is lacking in many long-vessel angiosperms. We examine the hypothesis that a fundamental association between sustained xylem water transport and downstream tissue function should select for xylem that avoids embolism in long-vessel trees by quantifying xylem capacity to withstand air entry of western North American oaks (Quercus spp.). Optical visualization showed that 50% of embolism occurs at water potentials below -2.7 MPa in all 19 species, and -6.6 MPa in the most resistant species. By mapping the evolution of xylem vulnerability to embolism onto a fossil-dated phylogeny of the western North American oaks, we found large differences between clades (sections) while closely related species within each clade vary little in their capacity to withstand air entry. Phylogenetic conservatism in xylem physical tolerance, together with a significant correlation between species distributions along rainfall gradients and their dehydration tolerance, suggests that closely related species occupy similar climatic niches and that species' geographic ranges may have shifted along aridity gradients in accordance with their physical tolerance. Such trends, coupled with evolutionary associations between capacity to withstand xylem embolism and other hydraulic-related traits, yield wide margins of safety against embolism in oaks from diverse habitats. Evolved responses of the vascular system to aridity support the embolism avoidance hypothesis and reveal the importance of quantifying plant capacity to withstand xylem embolism for understanding function and biogeography of some of the Northern Hemisphere's most ecologically and economically important plants.
- Published
- 2021
7. Tundra Trait Team: A database of plant traits spanning the tundra biome
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Bjorkman, Anne D, Myers‐Smith, Isla H, Elmendorf, Sarah C, Normand, Signe, Thomas, Haydn JD, Alatalo, Juha M, Alexander, Heather, Anadon‐Rosell, Alba, Angers‐Blondin, Sandra, Bai, Yang, Baruah, Gaurav, Beest, Mariska te, Berner, Logan, Björk, Robert G, Blok, Daan, Bruelheide, Helge, Buchwal, Agata, Buras, Allan, Carbognani, Michele, Christie, Katherine, Collier, Laura S, Cooper, Elisabeth J, Cornelissen, J Hans C, Dickinson, Katharine JM, Dullinger, Stefan, Elberling, Bo, Eskelinen, Anu, Forbes, Bruce C, Frei, Esther R, Iturrate‐Garcia, Maitane, Good, Megan K, Grau, Oriol, Green, Peter, Greve, Michelle, Grogan, Paul, Haider, Sylvia, Hájek, Tomáš, Hallinger, Martin, Happonen, Konsta, Harper, Karen A, Heijmans, Monique MPD, Henry, Gregory HR, Hermanutz, Luise, Hewitt, Rebecca E, Hollister, Robert D, Hudson, James, Hülber, Karl, Iversen, Colleen M, Jaroszynska, Francesca, Jiménez‐Alfaro, Borja, Johnstone, Jill, Jorgensen, Rasmus Halfdan, Kaarlejärvi, Elina, Klady, Rebecca, Klimešová, Jitka, Korsten, Annika, Kuleza, Sara, Kulonen, Aino, Lamarque, Laurent J, Lantz, Trevor, Lavalle, Amanda, Lembrechts, Jonas J, Lévesque, Esther, Little, Chelsea J, Luoto, Miska, Macek, Petr, Mack, Michelle C, Mathakutha, Rabia, Michelsen, Anders, Milbau, Ann, Molau, Ulf, Morgan, John W, Mörsdorf, Martin Alfons, Nabe‐Nielsen, Jacob, Nielsen, Sigrid Schøler, Ninot, Josep M, Oberbauer, Steven F, Olofsson, Johan, Onipchenko, Vladimir G, Petraglia, Alessandro, Pickering, Catherine, Prevéy, Janet S, Rixen, Christian, Rumpf, Sabine B, Schaepman‐Strub, Gabriela, Semenchuk, Philipp, Shetti, Rohan, Soudzilovskaia, Nadejda A, Spasojevic, Marko J, Speed, James David Mervyn, Street, Lorna E, Suding, Katharine, Tape, Ken D, Tomaselli, Marcello, Trant, Andrew, Treier, Urs A, Tremblay, Jean‐Pierre, Tremblay, Maxime, Venn, Susanna, and Virkkala, Anna‐Maria
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alpine ,Arctic ,plant functional traits ,tundra ,Ecology - Published
- 2018
8. Measuring xylem hydraulic vulnerability for long-vessel species: an improved methodology with the flow centrifugation technique
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Burlett, Régis, Parise, Camille, Capdeville, Gaëlle, Cochard, Hervé, Lamarque, Laurent J., King, Andrew, and Delzon, Sylvain
- Published
- 2022
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9. Plant functional trait change across a warming tundra biome
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Bjorkman, Anne D, Myers-Smith, Isla H, Elmendorf, Sarah C, Normand, Signe, Rüger, Nadja, Beck, Pieter SA, Blach-Overgaard, Anne, Blok, Daan, Cornelissen, J Hans C, Forbes, Bruce C, Georges, Damien, Goetz, Scott J, Guay, Kevin C, Henry, Gregory HR, HilleRisLambers, Janneke, Hollister, Robert D, Karger, Dirk N, Kattge, Jens, Manning, Peter, Prevéy, Janet S, Rixen, Christian, Schaepman-Strub, Gabriela, Thomas, Haydn JD, Vellend, Mark, Wilmking, Martin, Wipf, Sonja, Carbognani, Michele, Hermanutz, Luise, Lévesque, Esther, Molau, Ulf, Petraglia, Alessandro, Soudzilovskaia, Nadejda A, Spasojevic, Marko J, Tomaselli, Marcello, Vowles, Tage, Alatalo, Juha M, Alexander, Heather D, Anadon-Rosell, Alba, Angers-Blondin, Sandra, Beest, Mariska te, Berner, Logan, Björk, Robert G, Buchwal, Agata, Buras, Allan, Christie, Katherine, Cooper, Elisabeth J, Dullinger, Stefan, Elberling, Bo, Eskelinen, Anu, Frei, Esther R, Grau, Oriol, Grogan, Paul, Hallinger, Martin, Harper, Karen A, Heijmans, Monique MPD, Hudson, James, Hülber, Karl, Iturrate-Garcia, Maitane, Iversen, Colleen M, Jaroszynska, Francesca, Johnstone, Jill F, Jørgensen, Rasmus Halfdan, Kaarlejärvi, Elina, Klady, Rebecca, Kuleza, Sara, Kulonen, Aino, Lamarque, Laurent J, Lantz, Trevor, Little, Chelsea J, Speed, James DM, Michelsen, Anders, Milbau, Ann, Nabe-Nielsen, Jacob, Nielsen, Sigrid Schøler, Ninot, Josep M, Oberbauer, Steven F, Olofsson, Johan, Onipchenko, Vladimir G, Rumpf, Sabine B, Semenchuk, Philipp, Shetti, Rohan, Collier, Laura Siegwart, Street, Lorna E, Suding, Katharine N, Tape, Ken D, Trant, Andrew, Treier, Urs A, Tremblay, Jean-Pierre, Tremblay, Maxime, Venn, Susanna, Weijers, Stef, Zamin, Tara, Boulanger-Lapointe, Noémie, Gould, William A, Hik, David S, Hofgaard, Annika, Jónsdóttir, Ingibjörg S, Jorgenson, Janet, Klein, Julia, and Magnusson, Borgthor
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Climate Change Impacts and Adaptation ,Biological Sciences ,Ecology ,Environmental Sciences ,Climate Action ,Biometry ,Geographic Mapping ,Global Warming ,Humidity ,Phenotype ,Plant Physiological Phenomena ,Plants ,Soil ,Spatio-Temporal Analysis ,Temperature ,Tundra ,Water ,General Science & Technology - Abstract
The tundra is warming more rapidly than any other biome on Earth, and the potential ramifications are far-reaching because of global feedback effects between vegetation and climate. A better understanding of how environmental factors shape plant structure and function is crucial for predicting the consequences of environmental change for ecosystem functioning. Here we explore the biome-wide relationships between temperature, moisture and seven key plant functional traits both across space and over three decades of warming at 117 tundra locations. Spatial temperature-trait relationships were generally strong but soil moisture had a marked influence on the strength and direction of these relationships, highlighting the potentially important influence of changes in water availability on future trait shifts in tundra plant communities. Community height increased with warming across all sites over the past three decades, but other traits lagged far behind predicted rates of change. Our findings highlight the challenge of using space-for-time substitution to predict the functional consequences of future warming and suggest that functions that are tied closely to plant height will experience the most rapid change. They also reveal the strength with which environmental factors shape biotic communities at the coldest extremes of the planet and will help to improve projections of functional changes in tundra ecosystems with climate warming.
- Published
- 2018
10. When and where soil is important to modify the carbon and water economy of leaves
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Paillassa, Jennifer, Wright, Ian J., Prentice, I. Colin, Pepin, Steeve, Smith, Nicholas G., Ethier, Gilbert, Westerband, Andrea C., Lamarque, Laurent J., Wang, Han, Cornwell, Will K., and Maire, Vincent
- Published
- 2020
11. Drought-induced lacuna formation in the stem causes hydraulic conductance to decline before xylem embolism in Selaginella
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Cardoso, Amanda A., Visel, Dominik, Kane, Cade N., Batz, Timothy A., Sánchez, Clara García, Kaack, Lucian, Lamarque, Laurent J., Wagner, Yael, King, Andrew, Torres-Ruiz, José M., Corso, Déborah, Burlett, Régis, Badel, Eric, Cochard, Hervé, Delzon, Sylvain, Jansen, Steven, and McAdam, Scott A. M.
- Published
- 2020
12. Plant hydraulics at the heart of plant, crops and ecosystem functions in the face of climate change
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Torres-Ruiz, José M., Cochard, Hervé, Delzon, Sylvain, Boivin, Thomas, Burlett, Régis, Cailleret, Maxime, Corso, Déborah, Delmas, Chloé E. L., De Caceres, Miquel, Diaz-Espejo, Antonio, Fernández-Conradi, Pilar, Guillemot, Joannès, Lamarque, Laurent J., Limousin, Jean-Marc, Mantova, Marylou, Mencuccini, Maurizio, Morin, Xavier, Pimont, François, Resco De Dios, Victor, Ruffault, Julien, Trueba, Santiago, Martin-StPaul, Nicolas K., Torres-Ruiz, José M., Cochard, Hervé, Delzon, Sylvain, Boivin, Thomas, Burlett, Régis, Cailleret, Maxime, Corso, Déborah, Delmas, Chloé E. L., De Caceres, Miquel, Diaz-Espejo, Antonio, Fernández-Conradi, Pilar, Guillemot, Joannès, Lamarque, Laurent J., Limousin, Jean-Marc, Mantova, Marylou, Mencuccini, Maurizio, Morin, Xavier, Pimont, François, Resco De Dios, Victor, Ruffault, Julien, Trueba, Santiago, and Martin-StPaul, Nicolas K.
- Abstract
Plant hydraulics is crucial for assessing the plants' capacity to extract and transport water from the soil up to their aerial organs. Along with their capacity to exchange water between plant compartments and regulate evaporation, hydraulic properties determine plant water relations, water status and susceptibility to pathogen attacks. Consequently, any variation in the hydraulic characteristics of plants is likely to significantly impact various mechanisms and processes related to plant growth, survival and production, as well as the risk of biotic attacks and forest fire behaviour. However, the integration of hydraulic traits into disciplines such as plant pathology, entomology, fire ecology or agriculture can be significantly improved. This review examines how plant hydraulics can provide new insights into our understanding of these processes, including modelling processes of vegetation dynamics, illuminating numerous perspectives for assessing the consequences of climate change on forest and agronomic systems, and addressing unanswered questions across multiple areas of knowledge.
- Published
- 2024
13. Plant hydraulics at the heart of plant, crops and ecosystem functions in the face of climate change
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Torres‐Ruiz, José M., primary, Cochard, Hervé, additional, Delzon, Sylvain, additional, Boivin, Thomas, additional, Burlett, Regis, additional, Cailleret, Maxime, additional, Corso, Déborah, additional, Delmas, Chloé E. L., additional, De Caceres, Miquel, additional, Diaz‐Espejo, Antonio, additional, Fernández‐Conradi, Pilar, additional, Guillemot, Joannes, additional, Lamarque, Laurent J., additional, Limousin, Jean‐Marc, additional, Mantova, Marylou, additional, Mencuccini, Maurizio, additional, Morin, Xavier, additional, Pimont, François, additional, De Dios, Victor Resco, additional, Ruffault, Julien, additional, Trueba, Santiago, additional, and Martin‐StPaul, Nicolas K., additional
- Published
- 2023
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14. Mechanisms of grapevine resilience to a vascular disease: investigating stem radial growth, xylem development, and physiological acclimation
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Dell’Acqua, Ninon, primary, Gambetta, Gregory A, additional, Delzon, Sylvain, additional, Ferrer, Nathalie, additional, Lamarque, Laurent J, additional, Saurin, Nicolas, additional, Theodore, Pauline, additional, and Delmas, Chloé E L, additional
- Published
- 2023
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15. Examining variation in hydraulic and resource acquisition traits along climatic gradients tests our understanding of plant form and function
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Skelton, Robert P., Anderegg, Leander D. L., and Lamarque, Laurent J.
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- 2019
16. Is xylem of angiosperm leaves less resistant to embolism than branches? Insights from microCT, hydraulics, and anatomy
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Klepsch, Matthias, Zhang, Ya, Kotowska, Martyna M., Lamarque, Laurent J., Nolf, Markus, Schuldt, Bernhard, Torres-Ruiz, José M., Qin, De-Wen, Choat, Brendan, Delzon, Sylvain, Scoffoni, Christine, Cao, Kun-Fang, and Jansen, Steven
- Published
- 2018
17. Photosynthesis, leaf hydraulic conductance and embolism dynamics in the resurrection plant Barbacenia purpurea
- Author
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Agencia Estatal de Investigación (España), Ministerio de Ciencia, Innovación y Universidades (España), European Commission, Ministerio de Economía y Competitividad (España), Nadal, Miquel [0000-0003-1472-1792], Carriquí, Marc [0000-0002-0153-2602], Badel, Eric [0000-0003-2282-7554], Cochard, H. [0000-0002-2727-7072], Delzon, Sylvain [0000-0003-3442-1711], King, Andrew [0000-0001-8542-1354], Lamarque, Laurent J. [0000-0002-1430-5193], Flexas, Jaume [0000-0002-3069-175X], Torres-Ruíz, José Manuel [0000-0003-1367-7056], Nadal, Miquel, Carriquí, Marc, Badel, Eric, Cochard, H., Delzon, Sylvain, King, Andrew, Lamarque, Laurent J., Flexas, Jaume, Torres-Ruíz, José Manuel, Agencia Estatal de Investigación (España), Ministerio de Ciencia, Innovación y Universidades (España), European Commission, Ministerio de Economía y Competitividad (España), Nadal, Miquel [0000-0003-1472-1792], Carriquí, Marc [0000-0002-0153-2602], Badel, Eric [0000-0003-2282-7554], Cochard, H. [0000-0002-2727-7072], Delzon, Sylvain [0000-0003-3442-1711], King, Andrew [0000-0001-8542-1354], Lamarque, Laurent J. [0000-0002-1430-5193], Flexas, Jaume [0000-0002-3069-175X], Torres-Ruíz, José Manuel [0000-0003-1367-7056], Nadal, Miquel, Carriquí, Marc, Badel, Eric, Cochard, H., Delzon, Sylvain, King, Andrew, Lamarque, Laurent J., Flexas, Jaume, and Torres-Ruíz, José Manuel
- Abstract
The main parameters determining photosynthesis are stomatal and mesophyll conductance and electron transport rate, and for hydraulic dynamics they are leaf hydraulic conductance and the spread of embolism. These parameters have scarcely been studied in desiccation-tolerant (resurrection) plants exposed to drought. Here, we characterized photosynthesis and hydraulics during desiccation and rehydration in a poikilochlorophyllous resurrection plant, Barbacenia purpurea (Velloziaceae). Gas exchange, chlorophyll fluorescence, and leaf water status were monitored along the whole dehydration-rehydration cycle. Simultaneously, embolism formation and hydraulic functioning recovery were measured at leaf level using micro-computed tomography imaging. Photosynthesis and leaf hydraulic conductance ceased at relatively high water potential (-1.28 and -1.54 MPa, respectively), whereas the onset of leaf embolism occurred after stomatal closure and photosynthesis cessation (<-1.61 MPa). This sequence of physiological processes during water stress may be associated with the need to delay dehydration, to prepare the molecular changes required in the desiccated state. Complete rehydration occurred rapidly in the mesophyll, whereas partial xylem refilling, and subsequent recovery of photosynthesis, occurred at later stages after rewatering. These results highlight the importance of stomata as safety valves to protect the vascular system from embolism, even in a plant able to fully recover after complete embolism.
- Published
- 2023
18. Plant hydraulics at the heart of plant, crops and ecosystem functions in the face of climate change.
- Author
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Torres‐Ruiz, José M., Cochard, Hervé, Delzon, Sylvain, Boivin, Thomas, Burlett, Regis, Cailleret, Maxime, Corso, Déborah, Delmas, Chloé E. L., De Caceres, Miquel, Diaz‐Espejo, Antonio, Fernández‐Conradi, Pilar, Guillemot, Joannes, Lamarque, Laurent J., Limousin, Jean‐Marc, Mantova, Marylou, Mencuccini, Maurizio, Morin, Xavier, Pimont, François, De Dios, Victor Resco, and Ruffault, Julien
- Subjects
HYDRAULICS ,CLIMATE change ,AGRICULTURAL ecology ,FIRE ecology ,VEGETATION dynamics ,XYLEM - Abstract
Summary: Plant hydraulics is crucial for assessing the plants' capacity to extract and transport water from the soil up to their aerial organs. Along with their capacity to exchange water between plant compartments and regulate evaporation, hydraulic properties determine plant water relations, water status and susceptibility to pathogen attacks. Consequently, any variation in the hydraulic characteristics of plants is likely to significantly impact various mechanisms and processes related to plant growth, survival and production, as well as the risk of biotic attacks and forest fire behaviour. However, the integration of hydraulic traits into disciplines such as plant pathology, entomology, fire ecology or agriculture can be significantly improved. This review examines how plant hydraulics can provide new insights into our understanding of these processes, including modelling processes of vegetation dynamics, illuminating numerous perspectives for assessing the consequences of climate change on forest and agronomic systems, and addressing unanswered questions across multiple areas of knowledge. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
19. Mechanisms of grapevine resilience to a vascular disease: investigating stem radial growth, xylem development and physiological acclimation.
- Author
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Dell'Acqua, Ninon, Gambetta, Gregory A, Delzon, Sylvain, Ferrer, Nathalie, Lamarque, Laurent J, Saurin, Nicolas, Theodore, Pauline, and Delmas, Chloé E L
- Abstract
Background and Aims Plant vascular diseases significantly impact crop yield worldwide. Esca is a vascular disease of grapevine found globally in vineyards which causes a loss of hydraulic conductance due to the occlusion of xylem vessels by tyloses. However, the integrated response of plant radial growth and physiology in maintaining xylem integrity in grapevine expressing esca symptoms remains poorly understood. Methods We investigated the interplay between variation in stem diameter, xylem anatomy, plant physiological response and hydraulic traits in two widespread esca-susceptible cultivars, 'Sauvignon blanc' and 'Cabernet Sauvignon'. We used an original experimental design using naturally infected mature vines which were uprooted and transplanted into pots allowing for their study in a mini-lysimeter glasshouse phenotyping platform. Key Results Esca significantly altered the timing and sequence of stem growth periods in both cultivars, particularly the shrinkage phase following radial expansion. Symptomatic plants had a significantly higher density of occluded vessels and lower leaf and whole-plant gas exchange. Esca-symptomatic vines showed compensation mechanisms, producing numerous small functional xylem vessels later in development suggesting a maintenance of stem vascular cambium activity. Stabilization or late recovery of whole-plant stomatal conductance coincided with new healthy shoots at the top of the plant after esca symptoms plateaued. Conclusions Modified cropping practices, such as avoiding late-season topping, may enhance resilience in esca-symptomatic plants. These results highlight that integrating dendrometers, xylem anatomy and gas exchange provides insights into vascular pathogenesis and its effects on plant physiology. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
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20. Drought survival in conifer species is related to the time required to cross the stomatal safety margin
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Petek-Petrik, Anja, primary, Petrík, Peter, additional, Lamarque, Laurent J, additional, Cochard, Hervé, additional, Burlett, Régis, additional, and Delzon, Sylvain, additional
- Published
- 2023
- Full Text
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21. Photosynthesis, leaf hydraulic conductance and embolism dynamics in the resurrection plant Barbacenia purpurea
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Nadal, Miquel, primary, Carriquí, Marc, additional, Badel, Eric, additional, Cochard, Hervé, additional, Delzon, Sylvain, additional, King, Andrew, additional, Lamarque, Laurent J., additional, Flexas, Jaume, additional, and Torres‐Ruiz, José M., additional
- Published
- 2023
- Full Text
- View/download PDF
22. Leaf physiological and morphological constraints of water-use efficiency in C3 plants
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Petrík, Peter, primary, Petek-Petrik, Anja, additional, Mukarram, Mohammad, additional, Schuldt, Bernhard, additional, and Lamarque, Laurent J, additional
- Published
- 2023
- Full Text
- View/download PDF
23. Plant traits poorly predict winner and loser shrub species in a warming tundra biome
- Author
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Sustainability Science and Education, Spatial Ecology and Global Change, Environmental Sciences, García Criado, Mariana, Myers-Smith, Isla H., Bjorkman, Anne D., Normand, Signe, Blach-Overgaard, Anne, Thomas, Haydn J. D., Eskelinen, Anu, Happonen, Konsta, Alatalo, Juha M., Anadon-Rosell, Alba, Aubin, Isabelle, te Beest, Mariska, Betway-May, Katlyn R., Blok, Daan, Buras, Allan, Cerabolini, Bruno E. L., Christie, Katherine, Cornelissen, J. Hans C., Forbes, Bruce C., Frei, Esther R., Grogan, Paul, Hermanutz, Luise, Hollister, Robert D., Hudson, James, Iturrate-Garcia, Maitane, Kaarlejärvi, Elina, Kleyer, Michael, Lamarque, Laurent J., Lembrechts, Jonas J., Lévesque, Esther, Luoto, Miska, Macek, Petr, May, Jeremy L., Prevéy, Janet S., Schaepman-Strub, Gabriela, Sheremetiev, Serge N., Siegwart Collier, Laura, Soudzilovskaia, Nadejda A., Trant, Andrew, Venn, Susanna E., Virkkala, Anna-Maria, Sustainability Science and Education, Spatial Ecology and Global Change, Environmental Sciences, García Criado, Mariana, Myers-Smith, Isla H., Bjorkman, Anne D., Normand, Signe, Blach-Overgaard, Anne, Thomas, Haydn J. D., Eskelinen, Anu, Happonen, Konsta, Alatalo, Juha M., Anadon-Rosell, Alba, Aubin, Isabelle, te Beest, Mariska, Betway-May, Katlyn R., Blok, Daan, Buras, Allan, Cerabolini, Bruno E. L., Christie, Katherine, Cornelissen, J. Hans C., Forbes, Bruce C., Frei, Esther R., Grogan, Paul, Hermanutz, Luise, Hollister, Robert D., Hudson, James, Iturrate-Garcia, Maitane, Kaarlejärvi, Elina, Kleyer, Michael, Lamarque, Laurent J., Lembrechts, Jonas J., Lévesque, Esther, Luoto, Miska, Macek, Petr, May, Jeremy L., Prevéy, Janet S., Schaepman-Strub, Gabriela, Sheremetiev, Serge N., Siegwart Collier, Laura, Soudzilovskaia, Nadejda A., Trant, Andrew, Venn, Susanna E., and Virkkala, Anna-Maria
- Published
- 2023
24. Is a seasonally reduced growth potential a convergent strategy to survive drought and frost in plants?
- Author
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Volaire, Florence, Barkaoui, Karim, Grémillet, David, Charrier, Guillaume, Dangles, Olivier, Lamarque, Laurent J., Martin-StPaul, Nicolas K., Chuine, Isabelle, Volaire, Florence, Barkaoui, Karim, Grémillet, David, Charrier, Guillaume, Dangles, Olivier, Lamarque, Laurent J., Martin-StPaul, Nicolas K., and Chuine, Isabelle
- Abstract
Background: Plants have adapted to survive seasonal life-threatening frost and drought. However, the timing and frequency of such events are impacted by climate change, jeopardizing plant survival. Understanding better the strategies of survival to dehydration stress is therefore timely and can be enhanced by the cross-fertilization of research between disciplines (ecology, physiology), models (woody, herbaceous species) and types of stress (drought, frost). Scope: We build upon the 'growth–stress survival' trade-off, which underpins the identification of global plant strategies across environments along a 'fast–slow' economics spectrum. Although phenological adaptations such as dormancy are crucial to survive stress, plant global strategies along the fast–slow economic spectrum rarely integrate growth variations across seasons. We argue that the growth–stress survival trade-off can be a useful framework to identify convergent plant ecophysiological strategies to survive both frost and drought. We review evidence that reduced physiological activity, embolism resistance and dehydration tolerance of meristematic tissues are interdependent strategies that determine thresholds of mortality among plants under severe frost and drought. We show that complete dormancy, i.e. programmed growth cessation, before stress occurrence, minimizes water flows and maximizes dehydration tolerance during seasonal life-threatening stresses. We propose that incomplete dormancy, i.e. the programmed reduction of growth potential during the harshest seasons, could be an overlooked but major adaptation across plants. Quantifying stress survival in a range of non-dormant versus winter- or summer-dormant plants, should reveal to what extent incomplete to complete dormancy could represent a proxy for dehydration tolerance and stress survival. Conclusions: Our review of the strategies involved in dehydration stress survival suggests that winter and summer dormancy are insufficiently acknowledged
- Published
- 2023
25. Plant traits poorly predict winner and loser shrub species in a warming tundra biome
- Author
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García Criado, Mariana; https://orcid.org/0000-0001-7480-6144, Myers-Smith, Isla H; https://orcid.org/0000-0002-8417-6112, Bjorkman, Anne D; https://orcid.org/0000-0003-2174-7800, Normand, Signe, Blach-Overgaard, Anne, Thomas, Haydn J D; https://orcid.org/0000-0001-9099-6304, Eskelinen, Anu; https://orcid.org/0000-0003-1707-5263, Happonen, Konsta, Alatalo, Juha M; https://orcid.org/0000-0001-5084-850X, Anadon-Rosell, Alba; https://orcid.org/0000-0002-9447-7795, Aubin, Isabelle; https://orcid.org/0000-0002-5953-1012, te Beest, Mariska; https://orcid.org/0000-0003-3673-4105, Betway-May, Katlyn R; https://orcid.org/0000-0001-5594-3047, Blok, Daan; https://orcid.org/0000-0003-2703-9303, Buras, Allan; https://orcid.org/0000-0003-2179-0681, Cerabolini, Bruno E L; https://orcid.org/0000-0002-3793-0733, Christie, Katherine; https://orcid.org/0000-0002-4124-0700, Cornelissen, J Hans C; https://orcid.org/0000-0002-2346-1585, Forbes, Bruce C; https://orcid.org/0000-0002-4593-5083, Frei, Esther R; https://orcid.org/0000-0003-1910-7900, Grogan, Paul; https://orcid.org/0000-0002-7379-875X, Hermanutz, Luise; https://orcid.org/0000-0003-0706-7067, Hollister, Robert D; https://orcid.org/0000-0002-4764-7691, Hudson, James, Iturrate-Garcia, Maitane, Kaarlejärvi, Elina; https://orcid.org/0000-0003-0014-0073, Kleyer, Michael, Lamarque, Laurent J; https://orcid.org/0000-0002-1430-5193, Lembrechts, Jonas J, Lévesque, Esther; https://orcid.org/0000-0002-1119-6032, et al, García Criado, Mariana; https://orcid.org/0000-0001-7480-6144, Myers-Smith, Isla H; https://orcid.org/0000-0002-8417-6112, Bjorkman, Anne D; https://orcid.org/0000-0003-2174-7800, Normand, Signe, Blach-Overgaard, Anne, Thomas, Haydn J D; https://orcid.org/0000-0001-9099-6304, Eskelinen, Anu; https://orcid.org/0000-0003-1707-5263, Happonen, Konsta, Alatalo, Juha M; https://orcid.org/0000-0001-5084-850X, Anadon-Rosell, Alba; https://orcid.org/0000-0002-9447-7795, Aubin, Isabelle; https://orcid.org/0000-0002-5953-1012, te Beest, Mariska; https://orcid.org/0000-0003-3673-4105, Betway-May, Katlyn R; https://orcid.org/0000-0001-5594-3047, Blok, Daan; https://orcid.org/0000-0003-2703-9303, Buras, Allan; https://orcid.org/0000-0003-2179-0681, Cerabolini, Bruno E L; https://orcid.org/0000-0002-3793-0733, Christie, Katherine; https://orcid.org/0000-0002-4124-0700, Cornelissen, J Hans C; https://orcid.org/0000-0002-2346-1585, Forbes, Bruce C; https://orcid.org/0000-0002-4593-5083, Frei, Esther R; https://orcid.org/0000-0003-1910-7900, Grogan, Paul; https://orcid.org/0000-0002-7379-875X, Hermanutz, Luise; https://orcid.org/0000-0003-0706-7067, Hollister, Robert D; https://orcid.org/0000-0002-4764-7691, Hudson, James, Iturrate-Garcia, Maitane, Kaarlejärvi, Elina; https://orcid.org/0000-0003-0014-0073, Kleyer, Michael, Lamarque, Laurent J; https://orcid.org/0000-0002-1430-5193, Lembrechts, Jonas J, Lévesque, Esther; https://orcid.org/0000-0002-1119-6032, and et al
- Abstract
Climate change is leading to species redistributions. In the tundra biome, shrubs are generally expanding, but not all tundra shrub species will benefit from warming. Winner and loser species, and the characteristics that may determine success or failure, have not yet been fully identified. Here, we investigate whether past abundance changes, current range sizes and projected range shifts derived from species distribution models are related to plant trait values and intraspecific trait variation. We combined 17,921 trait records with observed past and modelled future distributions from 62 tundra shrub species across three continents. We found that species with greater variation in seed mass and specific leaf area had larger projected range shifts, and projected winner species had greater seed mass values. However, trait values and variation were not consistently related to current and projected ranges, nor to past abundance change. Overall, our findings indicate that abundance change and range shifts will not lead to directional modifications in shrub trait composition, since winner and loser species share relatively similar trait spaces.
- Published
- 2023
26. Is a seasonally reduced growth potential a convergent strategy to survive drought and frost in plants?
- Author
-
Volaire, Florence, primary, Barkaoui, Karim, additional, Grémillet, David, additional, Charrier, Guillaume, additional, Dangles, Olivier, additional, Lamarque, Laurent J, additional, Martin-StPaul, Nicolas, additional, and Chuine, Isabelle, additional
- Published
- 2022
- Full Text
- View/download PDF
27. The Role of Provenance for the Projected Growth of Juvenile European Beech under Climate Change
- Author
-
Petrík, Peter, primary, Grote, Rüdiger, additional, Gömöry, Dušan, additional, Kurjak, Daniel, additional, Petek-Petrik, Anja, additional, Lamarque, Laurent J., additional, Sliacka Konôpková, Alena, additional, Mukarram, Mohammad, additional, Debta, Harish, additional, and Fleischer, Peter, additional
- Published
- 2022
- Full Text
- View/download PDF
28. Esca grapevine disease involves leaf hydraulic failure and represents a unique premature senescence process
- Author
-
Bortolami, Giovanni, primary, Ferrer, Nathalie, additional, Baumgartner, Kendra, additional, Delzon, Sylvain, additional, Gramaje, David, additional, Lamarque, Laurent J, additional, Romanazzi, Gianfranco, additional, Gambetta, Gregory A, additional, and Delmas, Chloé E L, additional
- Published
- 2022
- Full Text
- View/download PDF
29. Model-assisted ideotyping reveals trait syndromes to adapt viticulture to a drier climate
- Author
-
Dayer, Silvina, primary, Lamarque, Laurent J, additional, Burlett, Régis, additional, Bortolami, Giovanni, additional, Delzon, Sylvain, additional, Herrera, José C, additional, Cochard, Hervé, additional, and Gambetta, Gregory A, additional
- Published
- 2022
- Full Text
- View/download PDF
30. Leaf physiological and morphological constraints of water-use efficiency in C3 plants.
- Author
-
Petrík, Peter, Petek-Petrik, Anja, Mukarram, Mohammad, Schuldt, Bernhard, and Lamarque, Laurent J
- Subjects
WATER efficiency ,LEAF anatomy ,GREENHOUSES ,PLANT canopies ,PLANT anatomy ,PLANT-water relationships - Abstract
The increasing evaporative demand due to climate change will significantly affect the balance of carbon assimilation and water losses of plants worldwide. The development of crop varieties with improved water-use efficiency (WUE) will be critical for adapting agricultural strategies under predicted future climates. This review aims to summarize the most important leaf morpho-physiological constraints of WUE in C
3 plants and identify gaps in knowledge. From the carbon gain side of the WUE, the discussed parameters are mesophyll conductance, carboxylation efficiency and respiratory losses. The traits and parameters affecting the waterside of WUE balance discussed in this review are stomatal size and density, stomatal control and residual water losses (cuticular and bark conductance), nocturnal conductance and leaf hydraulic conductance. In addition, we discussed the impact of leaf anatomy and crown architecture on both the carbon gain and water loss components of WUE. There are multiple possible targets for future development in understanding sources of WUE variability in plants. We identified residual water losses and respiratory carbon losses as the greatest knowledge gaps of whole-plant WUE assessments. Moreover, the impact of trichomes, leaf hydraulic conductance and canopy structure on plants' WUE is still not well understood. The development of a multi-trait approach is urgently needed for a better understanding of WUE dynamics and optimization. [ABSTRACT FROM AUTHOR]- Published
- 2023
- Full Text
- View/download PDF
31. Cross-validation on saplings of High-Capacity Tensiometer and Thermocouple Psychrometer for continuous monitoring of xylem water potential
- Author
-
Dainese, Roberta, de Carvalho Faria Lima Lopes, Bruna, Tedeschi, Giuseppe, Lamarque, Laurent J., Delzon, Sylvain, Fourcaud, Thierry, Tarantino, Alessandro, Dainese, Roberta, de Carvalho Faria Lima Lopes, Bruna, Tedeschi, Giuseppe, Lamarque, Laurent J., Delzon, Sylvain, Fourcaud, Thierry, and Tarantino, Alessandro
- Abstract
The Pressure Chamber, the most popular method used to measure xylem water potential, is a discontinuous and destructive technique and therefore not suitable for automated monitoring. Continuous non-destructive monitoring could only be achieved until very recently via the Thermocouple Psychrometer (TP). We here present the High-Capacity Tensiometer (HCT) as alternative method for continuous non-destructive monitoring. This provided us with a unique chance to cross-validate the two instruments by installing them simultaneously on the same sapling stem. The HCT and the TP showed excellent agreement for xylem water potential < -0.5 MPa. Response to day/night cycles and watering was remarkably in phase, indicating excellent response time of both instruments despite substantially different working principles. For xylem water potential > -0.5 MPa, the discrepancies sometimes observed between the HCT and TP were mainly attributed to the kaolin paste used to establish contact between the xylem and the HCT, which becomes hydraulically poorly conductive in this range of water potential once dried beyond its air-entry value and subsequently re-wetted. Notwithstanding this limitation, which can be overcome by selecting a clay paste with higher air-entry value, the HCT has been shown to represent a valid alternative to the TP.
- Published
- 2022
32. Esca grapevine disease involves leaf hydraulic failure and represents a unique premature senescence process.
- Author
-
Bortolami, Giovanni, Ferrer, Nathalie, Baumgartner, Kendra, Delzon, Sylvain, Gramaje, David, Lamarque, Laurent J, Romanazzi, Gianfranco, Gambetta, Gregory A, and Delmas, Chloé E L
- Subjects
GRAPE diseases & pests ,LEAF physiology ,LEAF anatomy ,GRAPES ,GROWING season ,AUTUMN - Abstract
Xylem anatomy may change in response to environmental or biotic stresses. Vascular occlusion, an anatomical modification of mature xylem, contributes to plant resistance and susceptibility to different stresses. In woody organs, xylem occlusions have been examined as part of the senescence process, but their presence and function in leaves remain obscure. In grapevine, many stresses are associated with premature leaf senescence inducing discolorations and scorched tissue in leaves. However, we still do not know whether the leaf senescence process follows the same sequence of physiological events and whether leaf xylem anatomy is affected in similar ways. In this study, we quantified vascular occlusions in midribs from leaves with symptoms of the grapevine disease esca, magnesium deficiency and autumn senescence. We found higher amounts of vascular occlusions in leaves with esca symptoms (in 27% of xylem vessels on average), whereas the leaves with other symptoms (as well as the asymptomatic controls) had far fewer occlusions (in 3% of vessels). Therefore, we assessed the relationship between xylem occlusions and esca leaf symptoms in four different countries (California in the USA, France, Italy and Spain) and eight different cultivars. We monitored the plants over the course of the growing season, confirming that vascular occlusions do not evolve with symptom age. Finally, we investigated the hydraulic integrity of leaf xylem vessels by optical visualization of embolism propagation during dehydration. We found that the occlusions lead to hydraulic dysfunction mainly in the peripheral veins compared with the midribs in esca symptomatic leaves. These results open new perspectives on the role of vascular occlusions during the leaf senescence process, highlighting the uniqueness of esca leaf symptoms and its consequence on leaf physiology. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
33. Genetic differentiation and phenotypic plasticity in life-history traits between native and introduced populations of invasive maple trees
- Author
-
Lamarque, Laurent J., Lortie, Christopher J., Porté, Annabel J., and Delzon, Sylvain
- Published
- 2015
- Full Text
- View/download PDF
34. The time required to cross the stomatal safety margin varies between species and leads to differences in survival to drought
- Author
-
Petek-Petrik, Anja, Petrík, Peter, Lamarque, Laurent J., Cochard, Hervé, Burlett, Régis, and Delzon, Sylvain
- Published
- 2022
- Full Text
- View/download PDF
35. High variation in hydraulic efficiency but not xylem safety between roots and branches in four temperate broad‐leaved tree species
- Author
-
Lübbe, Torben, primary, Lamarque, Laurent J., additional, Delzon, Sylvain, additional, Torres Ruiz, José M., additional, Burlett, Régis, additional, Leuschner, Christoph, additional, and Schuldt, Bernhard, additional
- Published
- 2021
- Full Text
- View/download PDF
36. The Role of Provenance for the Projected Growth of Juvenile European Beech under Climate Change.
- Author
-
Petrík, Peter, Grote, Rüdiger, Gömöry, Dušan, Kurjak, Daniel, Petek-Petrik, Anja, Lamarque, Laurent J., Sliacka Konôpková, Alena, Mukarram, Mohammad, Debta, Harish, and Fleischer Jr., Peter
- Subjects
EUROPEAN beech ,CLIMATE change ,PHENOTYPIC plasticity ,ARID regions ,DATABASES ,NORWAY spruce - Abstract
European beech is one of the most common tree species in Europe and is generally suggested to play even more of a prominent role in forestry in the future. It seems to have the potential to partially replace Norway spruce, as it is less sensitive to expected warmer and drier conditions. It is, however, not well known in which regions these new plantings would be particularly favourable and if specific provenances may be better adapted to the new conditions than others. Therefore, we estimated the potential early height growth under climate conditions in 2040–2060 for 20 beech provenances across a region covering the Czech Republic and Slovakia. This Central European region is expected to experience considerably drier and warmer conditions in the future. For this exercise, we implemented a new neural network model developed from height growth information obtained from the open-access BeechCOSTe52 database. The simulations are driven by past and future climate data obtained from the WorldClim database of historical climate data and future climate projections. Simulations revealed that provenances originating from drier regions performed on average significantly better than those from regions with good water supply. Moreover, provenances originating from drier regions had a particularly large advantage in the relatively arid regions of Central Czechia and Southern Slovakia. We can also confirm that all provenances showed a high phenotypic plasticity of height growth across the whole investigated region. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
37. Cross-validation of the high-capacity tensiometer and thermocouple psychrometer for continuous monitoring of xylem water potential in saplings
- Author
-
Dainese, Roberta, primary, de CFL Lopes, Bruna, additional, Tedeschi, Giuseppe, additional, Lamarque, Laurent J, additional, Delzon, Sylvain, additional, Fourcaud, Thierry, additional, and Tarantino, Alessandro, additional
- Published
- 2021
- Full Text
- View/download PDF
38. Seasonal and long-term consequences of esca grapevine disease on stem xylem integrity
- Author
-
Bortolami, Giovanni, primary, Farolfi, Elena, additional, Badel, Eric, additional, Burlett, Regis, additional, Cochard, Herve, additional, Ferrer, Nathalie, additional, King, Andrew, additional, Lamarque, Laurent J, additional, Lecomte, Pascal, additional, Marchesseau-Marchal, Marie, additional, Pouzoulet, Jerome, additional, Torres-Ruiz, Jose M, additional, Trueba, Santiago, additional, Delzon, Sylvain, additional, Gambetta, Gregory A, additional, and Delmas, Chloe E L, additional
- Published
- 2021
- Full Text
- View/download PDF
39. The sequence and thresholds of leaf hydraulic traits underlying grapevine varietal differences in drought tolerance
- Author
-
Dayer, Silvina, Carlos Herrera, José, Dai, Zhanwu, Burlett, Régis, Lamarque, Laurent J., Delzon, Sylvain, BORTOLAMI, Giovanni, Cochard, Hervé, Gambetta, Gregory A., Ecophysiologie et Génomique Fonctionnelle de la Vigne (UMR EGFV), Université de Bordeaux (UB)-Institut des Sciences de la Vigne et du Vin (ISVV)-Ecole Nationale Supérieure des Sciences Agronomiques de Bordeaux-Aquitaine (Bordeaux Sciences Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Universität für Bodenkultur Wien = University of Natural Resources and Life [Vienne, Autriche] (BOKU), Biodiversité, Gènes & Communautés (BioGeCo), Université de Bordeaux (UB)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Santé et agroécologie du vignoble (UMR SAVE), Laboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant (PIAF), Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), ANR-10-EQPX-0016,XYLOFOREST,Plateforme d'Innovation ' Forêt-Bois-Fibre-Biomasse du Futur '(2010), ANR-10-IDEX-0003,IDEX BORDEAUX,Initiative d'excellence de l'Université de Bordeaux(2010), Institut National de la Recherche Agronomique (INRA)-Université Sciences et Technologies - Bordeaux 1-Université Victor Segalen - Bordeaux 2-Ecole Nationale Supérieure des Sciences Agronomiques de Bordeaux-Aquitaine (Bordeaux Sciences Agro), University of Natural Resources and Life Sciences (BOKU), Institut National de la Recherche Agronomique (INRA)-Université de Bordeaux (UB), and Institut National de la Recherche Agronomique (INRA)-Université de Bordeaux (UB)-Institut des Sciences de la Vigne et du Vin (ISVV)-Ecole Nationale Supérieure des Sciences Agronomiques de Bordeaux-Aquitaine (Bordeaux Sciences Agro)
- Subjects
Drought ,AcademicSubjects/SCI01210 ,Climate Change ,Embolism ,Water ,Plant Transpiration ,[SDV.BID]Life Sciences [q-bio]/Biodiversity ,Research Papers ,Droughts ,Transpiration ,Turgor loss point ,Plant Leaves ,Plant Breeding ,Plant—Environment Interactions ,Plant Stomata ,[SDE]Environmental Sciences ,Grapevine ,Stomata - Abstract
Adapting agriculture to climate change is driving the need for the selection and breeding of drought-tolerant crops. The aim of this study was to identify key drought tolerance traits and determine the sequence of their water potential thresholds across three grapevine cultivars with contrasting water use behaviors, Grenache, Syrah, and Semillon. We quantified differences in water use between cultivars and combined this with the determination of other leaf-level traits (e.g. leaf turgor loss point, π TLP), leaf vulnerability to embolism (P50), and the hydraulic safety margin (HSM P50). Semillon exhibited the highest maximum transpiration (Emax), and lowest sensitivity of canopy stomatal conductance (Gc) to vapor pressure deficit (VPD), followed by Syrah and Grenache. Increasing Emax was correlated with more negative water potential at which stomata close (Pgs90), π TLP, and P50, suggesting that increasing water use is associated with hydraulic traits allowing gas exchange under more negative water potentials. Nevertheless, all the cultivars closed their stomata prior to leaf embolism formation. Modeling simulations demonstrated that despite a narrower HSM, Grenache takes longer to reach thresholds of hydraulic failure due to its conservative water use. This study demonstrates that the relationships between leaf hydraulic traits are complex and interactive, stressing the importance of integrating multiple traits in characterizing drought tolerance., The relationships between traits including stomatal regulation, leaf embolism thresholds, and survival time under drought are complex and interactive, stressing the importance of integrating multiple traits in characterizing drought tolerance.
- Published
- 2020
40. Nighttime transpiration represents a negligible part of water loss and does not increase the risk of water stress in grapevine
- Author
-
Dayer, Silvina, primary, Herrera, José Carlos, additional, Dai, Zhanwu, additional, Burlett, Régis, additional, Lamarque, Laurent J., additional, Delzon, Sylvain, additional, Bortolami, Giovanni, additional, Cochard, Hervé, additional, and Gambetta, Gregory A., additional
- Published
- 2020
- Full Text
- View/download PDF
41. High variation in hydraulic efficiency but not xylem safety between roots and branches in four temperate broad‐leaved tree species.
- Author
-
Lübbe, Torben, Lamarque, Laurent J., Delzon, Sylvain, Torres Ruiz, José M., Burlett, Régis, Leuschner, Christoph, and Schuldt, Bernhard
- Subjects
- *
XYLEM , *SOIL drying , *SPECIES , *PLANT-water relationships , *EMBOLISMS ,WOOD density - Abstract
Xylem hydraulic safety and efficiency are key traits determining tree fitness in a warmer and drier world. While numerous plant hydraulic studies have focused on branches, our understanding of root hydraulic functioning remains limited, although roots control water uptake, influence stomatal regulation and have commonly been considered as the most vulnerable organ along the hydraulic pathway.We investigated 11 traits related to xylem safety and efficiency along the hydraulic pathway in four temperate broad‐leaved tree species.Continuous vessel tapering from coarse roots to stems and branches caused considerable reduction in hydraulic efficiency. Wood density was always lowest in roots, but did not decline linearly along the flow path. In contrast, xylem embolism resistance (P50) did not differ significantly between roots and branches, except for one species. The limited variation in xylem safety between organs did not adequately reflect the corresponding reductions in vessel diameter (by ~70%) and hydraulic efficiency (by ~85%). Although we did not observe any trade‐off between xylem safety and specific conductivity, vessel diameter, vessel lumen fraction and wood density were related to embolism resistance, both across and partly within organs.We conclude that coarse roots are not highly vulnerable to xylem embolism as commonly believed, indicating that hydraulic failure during soil drying might be restricted to fine roots. A free Plain Language Summary can be found within the Supporting Information of this article. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
42. Biogeographical contrasts to assess local and regional patterns of invasion: a case study with two reciprocally introduced exotic maple trees
- Author
-
Lamarque, Laurent J., Delzon, Sylvain, Sloan, Margaret H., and Lortie, Christopher J.
- Published
- 2012
- Full Text
- View/download PDF
43. Lack of vulnerability segmentation in four angiosperm tree species: evidence from direct X-ray microtomography observation
- Author
-
Li, Ximeng, primary, Delzon, Sylvain, additional, Torres-Ruiz, Jose, additional, Badel, Eric, additional, Burlett, Regis, additional, Cochard, Hervé, additional, Jansen, Steven, additional, King, Andrew, additional, Lamarque, Laurent J., additional, Lenoir, Nicolas, additional, St-Paul, Nicolas Martin, additional, and Choat, Brendan, additional
- Published
- 2020
- Full Text
- View/download PDF
44. Neither xylem collapse, cavitation, or changing leaf conductance drive stomatal closure in wheat
- Author
-
Corso, Déborah, primary, Delzon, Sylvain, additional, Lamarque, Laurent J., additional, Cochard, Hervé, additional, Torres‐Ruiz, José M., additional, King, Andrew, additional, and Brodribb, Timothy, additional
- Published
- 2020
- Full Text
- View/download PDF
45. Over‐accumulation of abscisic acid in transgenic tomato plants increases the risk of hydraulic failure
- Author
-
Lamarque, Laurent J., primary, Delzon, Sylvain, additional, Toups, Haley, additional, Gravel, Anne‐Isabelle, additional, Corso, Déborah, additional, Badel, Eric, additional, Burlett, Régis, additional, Charrier, Guillaume, additional, Cochard, Hervé, additional, Jansen, Steven, additional, King, Andrew, additional, Torres‐Ruiz, José M., additional, Pouzoulet, Jérôme, additional, Cramer, Grant R., additional, Thompson, Andrew J., additional, and Gambetta, Gregory A., additional
- Published
- 2020
- Full Text
- View/download PDF
46. Cross-validation of the high-capacity tensiometer and thermocouple psychrometer for continuous monitoring of xylem water potential in saplings.
- Author
-
Dainese, Roberta, Lopes, Bruna de CFL, Tedeschi, Giuseppe, Lamarque, Laurent J, Delzon, Sylvain, Fourcaud, Thierry, and Tarantino, Alessandro
- Subjects
XYLEM ,HYGROMETERS ,THERMOCOUPLES ,HYDROLOGIC cycle ,KAOLIN - Abstract
The pressure chamber, the most popular method used to measure xylem water potential, is a discontinuous and destructive technique and is therefore not suitable for automated monitoring. Continuous non-destructive monitoring could until very recently be achieved only by use of the thermocouple psychrometer (TP). Here we present the high-capacity tensiometer (HCT) as an alternative method for continuous non-destructive monitoring. This provided us with a unique chance to cross-validate the two instruments by installing them simultaneously on the same sapling stem. The HCT and the TP showed excellent agreement for xylem water potential less than –0.5 MPa. Response to day/night cycles and watering was remarkably in phase, indicating excellent response time of both instruments despite substantially different working principles. For xylem water potential greater than –0.5 MPa, the discrepancies sometimes observed between the HCT and TP were mainly attributed to the kaolin paste used to establish contact between the xylem and the HCT, which becomes hydraulically poorly conductive in this range of water potential once dried beyond its air-entry value and subsequently re-wetted. Notwithstanding this limitation, which can be overcome by selecting a clay paste with higher air-entry value, the HCT has been shown to represent a valid alternative to the TP. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
47. Exploring the hydraulic failure hypothesis of esca leaf symptom formation
- Author
-
Bortolami, Giovanni, Gambetta, Grégory A., Delzon, Sylvain, Lamarque, Laurent J., Pouzoulet, Jerome, Badel, Eric, Burlett, Régis, Charrier, Guillaume, Cochard, Hervé, Dayer, Silvina, Jansen, Steven, King, Andrew, Lecomte, Pascal, Lens, Frédéric, Torres-Ruiz, Jose, Delmas, Chloé E.L., Unité Mixte de Recherche en Santé Végétale (INRA/ENITA) (UMR SAVE), Institut National de la Recherche Agronomique (INRA)-École Nationale d'Ingénieurs des Travaux Agricoles - Bordeaux (ENITAB)-Institut des Sciences de la Vigne et du Vin (ISVV), Ecophysiologie et Génomique Fonctionnelle de la Vigne (EGFV), Institut National de la Recherche Agronomique (INRA)-Université de Bordeaux (UB)-Institut des Sciences de la Vigne et du Vin (ISVV)-Ecole Nationale Supérieure des Sciences Agronomiques de Bordeaux-Aquitaine (Bordeaux Sciences Agro), Biodiversité, Gènes et Communautés, Institut National de la Recherche Agronomique (INRA), Laboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant - Clermont Auvergne (PIAF), Institut National de la Recherche Agronomique (INRA)-Université Clermont Auvergne (UCA), Universität Ulm - Ulm University, Synchrotron SOLEIL, Naturalis Biodiversity Center, Ministere de l'Agriculture, de l'Agroalimentaire et de la Foret (Ministry of Agriculture, Agrifood, and Forestry) 22001150-1506, Unité Mixte de Recherche en Santé Végétale (INRA/ENITA) (UMRSV), Ecophysiologie et Génomique Fonctionnelle de la Vigne (UMR EGFV), Biodiversité, Gènes & Communautés (BioGeCo), Institut National de la Recherche Agronomique (INRA)-Université de Bordeaux (UB), Laboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant (PIAF), Institut National de la Recherche Agronomique (INRA)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020]), Naturalis Biodiversity Center [Leiden], and Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Supérieure des Sciences Agronomiques de Bordeaux-Aquitaine (Bordeaux Sciences Agro)-Institut des Sciences de la Vigne et du Vin (ISVV)-Université de Bordeaux (UB)
- Subjects
[SDV]Life Sciences [q-bio] ,fungi ,food and beverages - Abstract
Vascular pathogens cause disease in a large spectrum of perennial plants, with leaf scorch being one of the most conspicuous symptoms. Esca in grapevine (Vitis vinifera) is a vascular disease with huge negative effects on grape yield and the wine industry. One prominent hypothesis suggests that vascular disease leaf scorch is caused by fungal pathogen-derived elicitors and toxins. Another hypothesis suggests that leaf scorch is caused by hydraulic failure due to air-embolism, the pathogen itself, and/or plant-derived tyloses and gels. In this study we transplanted mature, naturally infected esca symptomatic vines from the field into pots, allowing us to explore xylem integrity in leaves (i.e. leaf mid-veins and petioles) using synchrotron-based in vivo X-ray micro-computed tomography and light microscopy. Our results demonstrated that symptomatic leaves are not associated with air embolism. In contrast, symptomatic leaves presented significantly more non-functional vessels resulting from the presence of non-gaseous embolisms (i.e. tyloses and gels) than control leaves, but there was no significant correlation with disease severity. Using quantitative PCR, we determined that two vascular pathogen species associated with esca necrosis in the trunk were not found in leaves where occlusions were observed. Together these results demonstrate that symptom development is associated with the disruption of vessel integrity and suggest that symptoms are elicited at a distance from the trunk where fungal infections occur. These findings open new perspectives on esca symptom expression where the hydraulic failure and elicitor/toxin hypotheses are not necessarily mutually exclusive.
- Published
- 2019
48. Tundra Trait Team:A database of plant traits spanning the tundra biome
- Author
-
Bjorkman, Anne D., Myers-Smith, Isla H., Elmendorf, Sarah C., Normand, Signe, Thomas, Haydn J. D., Alatalo, Juha M., Alexander, Heather, Anadon-Rosell, Alba, Angers-Blondin, Sandra, Bai, Yang, Baruah, Gaurav, te Beest, Mariska, Berner, Logan, Bjork, Robert G., Blok, Daan, Bruelheide, Helge, Buchwal, Agata, Buras, Allan, Carbognani, Michele, Christie, Katherine, Collier, Laura S., Cooper, Elisabeth J., Cornelissen, J. Hans C., Dickinson, Katharine J. M., Dullinger, Stefan, Elberling, Bo, Eskelinen, Anu, Forbes, Bruce C., Frei, Esther R., Iturrate-Garcia, Maitane, Good, Megan K., Grau, Oriol, Green, Peter, Greve, Michelle, Grogan, Paul, Haider, Sylvia, Hajek, Tomas, Hallinger, Martin, Happonen, Konsta, Harper, Karen A., Heijmans, Monique M. P. D., Henry, Gregory H. R., Hermanutz, Luise, Hewitt, Rebecca E., Hollister, Robert D., Hudson, James, Huelber, Karl, Iversen, Colleen M., Jaroszynska, Francesca, Jimenez-Alfaro, Borja, Johnstone, Jill, Jorgensen, Rasmus Halfdan, Kaarlejarvi, Elina, Klady, Rebecca, Klimesova, Jitka, Korsten, Annika, Kuleza, Sara, Kulonen, Aino, Lamarque, Laurent J., Lantz, Trevor, Lavalle, Amanda, Lembrechts, Jonas J., Levesque, Esther, Little, Chelsea J., Luoto, Miska, Macek, Petr, Mack, Michelle C., Mathakutha, Rabia, Michelsen, Anders, Milbau, Ann, Molau, Ulf, Morgan, John W., Morsdorf, Martin Alfons, Nabe-Nielsen, Jacob, Nielsen, Sigrid Scholer, Ninot, Josep M., Oberbauer, Steven F., Olofsson, Johan, Onipchenko, Vladimir G., Petraglia, Alessandro, Pickering, Catherine, Prevey, Janet S., Rixen, Christian, Rumpf, Sabine B., Schaepman-Strub, Gabriela, Semenchuk, Philipp, Shetti, Rohan, Soudzilovskaia, Nadejda A., Spasojevic, Marko J., Speed, James David Mervyn, Street, Lorna E., Suding, Katharine, Tape, Ken D., Tomaselli, Marcello, Trant, Andrew, Treier, Urs A., Tremblay, Jean-Pierre, Tremblay, Maxime, Venn, Susanna, Virkkala, Anna-Maria, Vowles, Tage, Weijers, Stef, Wilmking, Martin, Wipf, Sonja, Zamin, Tara, Systems Ecology, Spatial Ecology and Global Change, and Environmental Sciences
- Subjects
Ekologi ,Chemistry ,Arctic ,plant functional traits ,tundra ,Ecology ,Economics ,Ecological Applications ,alpine ,VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 ,VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 ,Biology - Abstract
Motivation: The Tundra Trait Team (TTT) database includes field-based measurements of key traits related to plant form and function at multiple sites across the tundra biome. This dataset can be used to address theoretical questions about plant strategy and trade-offs, trait environment relationships and environmental filtering, and trait variation across spatial scales, to validate satellite data, and to inform Earth system model parameters. Main types of variable contained: The database contains 91,970 measurements of 18 plant traits. The most frequently measured traits (>1,000 observations each) include plant height, leaf area, specific leaf area, leaf fresh and dry mass, leaf dry matter content, leaf nitrogen, carbon and phosphorus content, leaf C:N and N:P, seed mass, and stem specific density. Spatial location and grain: Measurements were collected in tundra habitats in both the Northern and Southern Hemispheres, including Arctic sites in Alaska, Canada, Greenland, Fennoscandia and Siberia, alpine sites in the European Alps, Colorado Rockies, Caucasus, Ural Mountains, Pyrenees, Australian Alps, and Central Otago Mountains (New Zealand), and sub-Antarctic Marion Island. More than 99% of observations are georeferenced. Time period and grain: All data were collected between 1964 and 2018. A small number of sites have repeated trait measurements at two or more time periods. Major taxa and level of measurement: Trait measurements were made on 978 terrestrial vascular plant species growing in tundra habitats. Most observations are on individuals (86%), while the remainder represent plot or site means or maximums per species. Software format: csv file and GitHub repository with data cleaning scripts in R; contribution to TRY plant trait database (www.try-db.org) to be included in the next version release. 2Ecoinformatics and Biodiversity, Department of Bioscience, Aarhus University, Aarhus, Denmark 3Senckenberg Gesellschaft fD?r Naturforschung, Biodiversity and Climate Research Centre (BiK?F), Frankfurt, Germany 4Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, Colorado 5National Ecological Observatory Network, Boulder, Colorado 6Institute of Arctic and Alpine Research, University of Colorado, Boulder, Colorado 7Arctic Research Center, Department of Bioscience, Aarhus University, Aarhus, Denmark 8Center for Biodiversity Dynamics in a Changing World (BIOCHANGE), Department of Bioscience, Aarhus University, Aarhus, Denmark 9Department of Biological and Environmental Sciences, Qatar University, Doha, Qatar 10Department of Forestry, Forest and Wildlife Research Center, Mississippi State University, Mississippi 11Department of Evolutionary Biology, Ecology and Environmental Sciences, University of Barcelona, Barcelona, Spain 12Biodiversity Research Institute, University of Barcelona, Barcelona, Spain 13Institute of Botany and Landscape Ecology, Greifswald University, Greifswald, Germany 14Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Xishuangbanna, China 15Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland 16Department of Ecology and Environmental Science, Ume� University, Ume�, Sweden 17Environmental Sciences, Copernicus Institute of Sustainable Development, Utrecht University, Utrecht, The Netherlands 18School of Informatics, Computing, and Cyber Systems, Northern Arizona University, Flagstaff, Arizona 19Department of Earth Sciences, University of Gothenburg, Gothenburg, Sweden 20Gothenburg Global Biodiversity Centre, GD?teborg, Sweden 21Department of Physical Geography and Ecosystem Science, Lund University, Lund, Sweden 22Martin Luther University Halle?Wittenberg, Institute of Biology / Geobotany and Botanical Garden, Halle (Saale), Germany 23German Centre for Integrative Biodiversity Research (iDiv) Halle?Jena?Leipzig, Leipzig, Germany 24Adam Mickiewicz University, Institute of Geoecology and Geoinformation, Poznan, Poland 25University of Alaska Anchorage, Department of Biological Sciences, Anchorage, Alaska 26Technische Universit�t MD?nchen, Freising, Germany 27Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy 28The Alaska Department of Fish and Game, Anchorage, Alaska 29Department of Biology, Memorial University, St. John�s, Newfoundland and Labrador, Canada 30Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, UiT? The Arctic University of Norway, Troms�, Norway 31Systems Ecology, Department of Ecological Science, Vrije Universiteit, Amsterdam, The Netherlands 32Department of Botany, University of Otago, Dunedin, New Zealand 33Department of Botany and Biodiversity Research, University of Vienna, Vienna, Austria 34Center for Permafrost (CENPERM), Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark 35Department of Physiological Diversity, Helmholtz Centre for Environmental Research ? UFZ, Leipzig, Germany 36Department of Ecology and Genetics, University of Oulu, Oulu, Finland 37Arctic Centre, University of Lapland, Rovaniemi, Finland 38Swiss Federal Research Institute WSL, Birmensdorf, Switzerland 39Department of Geography, University of British Columbia, Vancouver, British Columbia, Canada 40Faculty of Science and Technology, Federation University, Ballarat, Victoria, Australia 41Global Ecology Unit, CREAF?CSIC?UAB, Bellaterra, Catalonia, Spain 42CREAF, Bellaterra, Cerdanyola del Vall�s, Catalonia, Spain 43Department of Ecology, Environment and Evolution, La Trobe University, Bundoora, Australia 44Department of Plant and Soil Sciences, University of Pretoria, Pretoria, South Africa 45Department of Biology, Queen�s University, Kingston, Ontario, Canada Scopus
- Published
- 2018
49. Tundra Trait Team: A database of plant traits spanning the tundra biome
- Author
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Bjorkman, Anne D., Myers-Smith, Isla H., Elmendorf, Sarah C., Normand, Signe, Thomas, Haydn J. D., Alatalo, Juha M., Alexander, Heather, Anadon-Rosell, Alba, Angers-Blondin, Sandra, Bai, Yang, Baruah, Gaurav, te Beest, Mariska, Berner, Logan, Björk, Robert G., Blok, Daan, Bruelheide, Helge, Buchwal, Agata, Buras, Allan, Carbognani, Michele, Christie, Katherine, Collier, Laura S., Cooper, Elisabeth J., Cornelissen, J. Hans C., Dickinson, Katharine J. M., Dullinger, Stefan, Elberling, Bo, Eskelinen, Anu, Forbes, Bruce C., Frei, Esther R., Iturrate-Garcia, Maitane, Good, Megan K., Grau, Oriol, Green, Peter, Greve, Michelle, Grogan, Paul, Haider, Sylvia, Hájek, Tomáš, Hallinger, Martin, Happonen, Konsta, Harper, Karen A., Heijmans, Monique M. P. D., Henry, Gregory H. R., Hermanutz, Luise, Hewitt, Rebecca E., Hollister, Robert D., Hudson, James, Hülber, Karl, Iversen, Colleen M., Jaroszynska, Francesca, Jiménez-Alfaro, Borja, Johnstone, Jill, Jorgensen, Rasmus Halfdan, Kaarlejärvi, Elina, Klady, Rebecca, Klimešová, Jitka, Korsten, Annika, Kuleza, Sara, Kulonen, Aino, Lamarque, Laurent J., Lantz, Trevor, Lavalle, Amanda, Lembrechts, Jonas J., Lévesque, Esther, Little, Chelsea J., Luoto, Miska, Macek, Petr, Mack, Michelle C., Mathakutha, Rabia, Michelsen, Anders, Milbau, Ann, Molau, Ulf, Morgan, John W., Mörsdorf, Martin Alfons, Nabe-Nielsen, Jacob, Nielsen, Sigrid Schøler, Ninot, Josep M., Oberbauer, Steven F., Olofsson, Johan, Onipchenko, Vladimir G., Petraglia, Alessandro, Pickering, Catherine, Prevéy, Janet S., Rixen, Christian, Rumpf, Sabine B., Schaepman-Strub, Gabriela, Semenchuk, Philipp, Shetti, Rohan, Soudzilovskaia, Nadejda A., Spasojevic, Marko J., Speed, James David Mervyn, Street, Lorna E., Suding, Katharine, Tape, Ken D., Tomaselli, Marcello, Trant, Andrew, Treier, Urs A., Tremblay, Jean-Pierre, Tremblay, Maxime, Venn, Susanna, Virkkala, Anna-Maria, Vowles, Tage, Weijers, Stef, Wilmking, Martin, Wipf, Sonja, Zamin, Tara, Spatial Ecology and Global Change, and Environmental Sciences
- Subjects
Arctic ,plant functional traits ,tundra ,alpine - Abstract
Motivation The Tundra Trait Team (TTT) database includes field-based measurements of key traits related to plant form and function at multiple sites across the tundra biome. This dataset can be used to address theoretical questions about plant strategy and trade-offs, trait?environment relationships and environmental filtering, and trait variation across spatial scales, to validate satellite data, and to inform Earth system model parameters. Main types of variable contained The database contains 91,970 measurements of 18 plant traits. The most frequently measured traits (> 1,000 observations each) include plant height, leaf area, specific leaf area, leaf fresh and dry mass, leaf dry matter content, leaf nitrogen, carbon and phosphorus content, leaf C:N and N:P, seed mass, and stem specific density. Spatial location and grain Measurements were collected in tundra habitats in both the Northern and Southern Hemispheres, including Arctic sites in Alaska, Canada, Greenland, Fennoscandia and Siberia, alpine sites in the European Alps, Colorado Rockies, Caucasus, Ural Mountains, Pyrenees, Australian Alps, and Central Otago Mountains (New Zealand), and sub-Antarctic Marion Island. More than 99% of observations are georeferenced. Time period and grain All data were collected between 1964 and 2018. A small number of sites have repeated trait measurements at two or more time periods. Major taxa and level of measurement Trait measurements were made on 978 terrestrial vascular plant species growing in tundra habitats. Most observations are on individuals (86%), while the remainder represent plot or site means or maximums per species. Software format csv file and GitHub repository with data cleaning scripts in R; contribution to TRY plant trait database (www.try-db.org) to be included in the next version release.
- Published
- 2018
50. Xylem embolism in leaves does not occur with open stomata: evidence from direct observations using the optical visualization technique
- Author
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Creek, Danielle, primary, Lamarque, Laurent J, additional, Torres-Ruiz, José M, additional, Parise, Camille, additional, Burlett, Regis, additional, Tissue, David T, additional, and Delzon, Sylvain, additional
- Published
- 2019
- Full Text
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