Search

Your search keyword '"Carmen Guerrero-Galán"' showing total 6 results
Start Over Author "Carmen Guerrero-Galán" Topic 010606 plant biology & botany
6 results on '"Carmen Guerrero-Galán"'

1. Fungal Shaker-like channels beyond cellular K+ homeostasis: A role in ectomycorrhizal symbiosis between Hebeloma cylindrosporum and Pinus pinaster

Author

Sabine Zimmermann, Kevin Garcia, Carmen Guerrero-Galán, Hervé Sentenac, Cécile Fizames, Geneviève Conejero, Muhammad Zulqurnain Haider, Raphaël Lambilliotte, Hannah E. R. Frank, Amandine Delteil, Department of Crop and Soil Sciences, Biochimie et Physiologie Moléculaire des Plantes (BPMP), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Plateforme d'histocytologie et d'imagerie cellulaire végétale (PHIV), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), North Carolina State University [Raleigh] (NC State), University of North Carolina System (UNC), Government College University, and French National Research Agency (ANR)2010 BLAN 1604 03

Subjects
0106 biological sciences, 0301 basic medicine, Potassium Channels, Fungal Structure, Physiology, [SDV]Life Sciences [q-bio], Cellular homeostasis, 01 natural sciences, Biochemistry, Ion Channels, Gene Expression Regulation, Fungal, Mycorrhizae, Hebeloma, Homeostasis, Multidisciplinary, Chemistry, Physics, Fungal genetics, Eukaryota, Genomics, Plants, Transport protein, Cell biology, Electrophysiology, Physical Sciences, Medicine, Research Article, Hypha, Science, Biophysics, Neurophysiology, Mycology, Fungal Proteins, 03 medical and health sciences, Symbiosis, Genetics, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, Fungal Genetics, Ion channel, Fungal Genomics, Organisms, Fungi, Biology and Life Sciences, Proteins, Membrane transport, Pinus, Species Interactions, 030104 developmental biology, Potassium, Shaker Superfamily of Potassium Channels, Physiological Processes, 010606 plant biology & botany, Neuroscience
Abstract

Potassium (K+) acquisition, translocation and cellular homeostasis are mediated by various membrane transport systems in all organisms. We identified and described an ion channel in the ectomycorrhizal fungus Hebeloma cylindrosporum (HcSKC) that harbors features of animal voltage-dependent Shaker-like K+ channels, and investigated its role in both free-living hyphae and symbiotic conditions. RNAi lines affected in the expression of HcSKC were produced and used for in vitro mycorrhizal assays with the maritime pine as host plant, under standard or low K+ conditions. The adaptation of H. cylindrosporum to the downregulation of HcSKC was analyzed by qRT-PCR analyses for other K+-related transport proteins: the transporters HcTrk1, HcTrk2, and HcHAK, and the ion channels HcTOK1, HcTOK2.1, and HcTOK2.2. Downregulated HcSKC transformants displayed greater K+ contents at standard K+ only. In such conditions, plants inoculated with these transgenic lines were impaired in K+ nutrition. Taken together, these results support the hypothesis that the reduced expression of HcSKC modifies the pool of fungal K+ available for the plant and/or affects its symbiotic transfer to the roots. Our study reveals that the maintenance of K+ transport in H. cylindrosporum, through the regulation of HcSKC expression, is required for the K+ nutrition of the host plant.

Published
2020
Full Text
View/download PDF

2. Plant potassium nutrition in ectomycorrhizal symbiosis: properties and roles of the three fungal TOK potassium channels in Hebeloma cylindrosporum

Author

Geneviève Conejero, Gabriella Houdinet, Isabelle Gaillard, Hervé Sentenac, Carmen Guerrero-Galán, Sabine Zimmermann, Kevin Garcia, Amandine Delteil, Biochimie et Physiologie Moléculaire des Plantes (BPMP), Université de Montpellier (UM)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de biochimie et physiologie des plantes, Institut National de la Recherche Agronomique (INRA), Biology and Microbiology Department, South Dakota State University (SDSTATE), Plateforme Histocytologie et Imagerie Cellulaire Végétale, Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Zimmermann, Sabine, Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), and Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)

Subjects
0106 biological sciences, 0301 basic medicine, Potassium Channels, Saccharomyces cerevisiae, Fungus, maritime pine, absorption du potassium, champignon mycorhizien, 01 natural sciences, Microbiology, nutrition minérale, Ectosymbiosis, 03 medical and health sciences, Symbiosis, Mycorrhizae, Botany, Hebeloma, ion potassium, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, Axenic, Ecology, Evolution, Behavior and Systematics, Minerals, Vegetal Biology, pinus pinaster, shaker potassium channel, biology, fungi, Biological Transport, 15. Life on land, Pinus, biology.organism_classification, Yeast, Complementation, hebeloma cylindrosporum, 030104 developmental biology, Seedlings, Potassium, Pinus pinaster, canaux potassiques shaker, Plant nutrition, Biologie végétale, 010606 plant biology & botany
Abstract

Ectomycorrhizal fungi play an essential role in the ecology of boreal and temperate forests through the improvement of tree mineral nutrition. Potassium (K+ ) is an essential nutrient for plants and is needed in high amounts. We recently demonstrated that the ectomycorrhizal fungus Hebeloma cylindrosporum improves the K+ nutrition of Pinus pinaster under shortage conditions. Part of the transport systems involved in K+ uptake by the fungus has been deciphered, while the molecular players responsible for the transfer of this cation towards the plant remain totally unknown. Analysis of the genome of H. cylindrosporum revealed the presence of three putative tandem-pore outward-rectifying K+ (TOK) channels that could contribute to this transfer. Here, we report the functional characterization of these three channels through two-electrode voltage-clamp experiments in oocytes and yeast complementation assays. The expression pattern and physiological role of these channels were analysed in symbiotic interaction with P. pinaster. Pine seedlings colonized by fungal transformants overexpressing two of them displayed a larger accumulation of K+ in shoots. This study revealed that TOK channels have distinctive properties and functions in axenic and symbiotic conditions and suggested that HcTOK2.2 is implicated in the symbiotic transfer of K+ from the fungus towards the plant.

Published
2018
Full Text
View/download PDF

3. Harnessing symbiotic plant-fungus interactions to unleash hidden forces from extreme plant ecosystems

Author

Anne Krapp, Jutta Ludwig-Müller, Stephan Pollmann, Sandra S. Scholz, Carmen Guerrero-Galán, Marta-Marina Pérez-Alonso, Jesús Vicente-Carbajosa, Ralf Oelmüller, Hitoshi Sakakibara, Takatoshi Kiba, Centro de Biotecnología y Genómica de Plantas, Universidad Politécnica de Madrid (UPM)-Instituto Nacional de Investigación y Tecnología Agraria y Alimentación (INIA), Campus de Montegancedo-Campus de Montegancedo, Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Department of Plant Physiology, Friedrich-Schiller-Universität = Friedrich Schiller University Jena [Jena, Germany]-Friedrich-Schiller-Universität = Friedrich Schiller University Jena [Jena, Germany], RIKEN Center for Sustainable Resource Science [Yokohama] (RIKEN CSRS), RIKEN - Institute of Physical and Chemical Research [Japon] (RIKEN), Department of Applied Biosciences, Graduate School of Bioagricultural Sciences, Nagoya University-Nagoya University, Institute of Botany, Technische Universität Dresden = Dresden University of Technology (TU Dresden), Institut Jean-Pierre Bourgin (IJPB), AgroParisTech-Université Paris-Saclay-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Departamento de Biotecnología-Biología Vegetal, Escuela Técnica Superior de Ingeniería Agronómica, Alimentaria y de Biosistemas, Universidad Politécnica de Madrid (UPM)-Universidad Politécnica de Madrid (UPM), and Ministry of Economy and Competitiveness (MINECO), Spain PCIN-2016037Federal Ministry of Education & Research (BMBF)01DR17007A01DR17007BJapan Science & Technology Agency (JST)JPMJSC16C3Centre National de la Recherche Scientifique (CNRS)EIG_JC1JAPAN-045Severo Ochoa Program for Centers of Excellence in R&D from the Agencia Estatal de Investigacion, Spain SEV-2016-0672

Subjects
0106 biological sciences, Mediterranean climate, Serendipita indica, plant performance, Physiology, Natural resource economics, Climate Change, Climate change, Growing season, Plant Science, 01 natural sciences, crosstalk, 03 medical and health sciences, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, Ecosystem, Agricultural productivity, Review Papers, 030304 developmental biology, 2. Zero hunger, 0303 health sciences, endosymbiosis, business.industry, AcademicSubjects/SCI01210, Basidiomycota, Global warming, fungi, Fungi, food and beverages, 15. Life on land, Abiotic stress, Europe, Geography, 13. Climate action, Agriculture, Greenhouse gas, business, 010606 plant biology & botany
Abstract

Serendipita indica can colonize a broad range of hosts, conferring improved stress tolerance and performance under adverse conditions. The underlying molecular mechanisms have the potential to improve agricultural practices in a climate change scenario., Global climate change is arguably one of the biggest threats of modern times and has already led to a wide range of impacts on the environment, economy, and society. Owing to past emissions and climate system inertia, global climate change is predicted to continue for decades even if anthropogenic greenhouse gas emissions were to stop immediately. In many regions, such as central Europe and the Mediterranean region, the temperature is likely to rise by 2–5 °C and annual precipitation is predicted to decrease. Expected heat and drought periods followed by floods, and unpredictable growing seasons, are predicted to have detrimental effects on agricultural production systems, causing immense economic losses and food supply problems. To mitigate the risks of climate change, agricultural innovations counteracting these effects need to be embraced and accelerated. To achieve maximum improvement, the required agricultural innovations should not focus only on crops but rather pursue a holistic approach including the entire ecosystem. Over millions of years, plants have evolved in close association with other organisms, particularly soil microbes that have shaped their evolution and contemporary ecology. Many studies have already highlighted beneficial interactions among plants and the communities of microorganisms with which they coexist. Questions arising from these discoveries are whether it will be possible to decipher a common molecular pattern and the underlying biochemical framework of interspecies communication, and whether such knowledge can be used to improve agricultural performance under environmental stress conditions. In this review, we summarize the current knowledge of plant interactions with fungal endosymbionts found in extreme ecosystems. Special attention will be paid to the interaction of plants with the symbiotic root-colonizing endophytic fungus Serendipita indica, which has been developed as a model system for beneficial plant–fungus interactions.

Published
2019
Full Text
View/download PDF

4. The ectomycorrhizal contribution to tree nutrition

Author

Sabine Zimmermann, Janice L. Eibensteiner, Kevin Garcia, Heike Bücking, Carmen Guerrero-Galán, Adeline Becquer, Gabriella Houdinet, Ecologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes (UMR Eco&Sols), Institut National de la Recherche Agronomique (INRA)-Institut de Recherche pour le Développement (IRD)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Commonwealth Scientific and Industrial Research Organisation (CSIRO), Biochimie et Physiologie Moléculaire des Plantes (BPMP), Université de Montpellier (UM)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS), Biology and Microbiology Department, South Dakota State University (SDSTATE), Department of Crop and Soil Sciences, North Carolina State University [Raleigh] (NC State), University of North Carolina System (UNC), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), and Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)

Subjects
0106 biological sciences, composé soufre, symbiose ectomycorhizienne, 01 natural sciences, Ectosymbiosis, 03 medical and health sciences, Nutrient, sulphured compound, Symbiosis, absorption azotée, absorption de l'eau, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, Ecosystem, système de transport cellulaire, phosphorus, 030304 developmental biology, Mutualism (biology), 0303 health sciences, arbre, Ascomycota, biology, Ecology, potassium, fungi, zinc, food and beverages, 15. Life on land, biology.organism_classification, phosphore, Temperate rainforest, 010606 plant biology & botany, Woody plant
Abstract

Trees can be associated with dozens of fungi helping them to acquire resources from forest soils. The most widespread mutualistic association in boreal and temperate forests is the ectomycorrhizal symbiosis. This symbiosis involves mushroom-forming fungi of basidiomycota, ascomycota, and some zygomycota clades and the roots of woody plant species, including oaks, poplars or pines. Although the impact of this association on ecosystem production and tree nutrition is investigated for about a century, our understanding on the molecular mechanisms that control water and nutrient fluxes between plant and fungal partners is still limited. Here, we review the recent knowledge on the ectomycorrhizal contribution to tree nutrition. We specifically highlight the molecular mechanisms driving the acquisition, translocation and release of water and nutrients in ectomycorrhizal systems. We particularly focus on the transport of macronutrients, including nitrogen, phosphorus, potassium, sulphur and calcium, micronutrients, and water by the symbiotic partner. We also provide background on the evolution, diversity, and importance of this symbiosis, identify knowledge gaps, and propose future research directions.

Published
2019
Full Text
View/download PDF

5. Ectomycorrhizal symbiosis helps plants to challenge salt stress conditions

Author

Carmen Guerrero-Galán, Monica Calvo-Polanco, Sabine Zimmermann, Biochimie et Physiologie Moléculaire des Plantes (BPMP), Université de Montpellier (UM)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS), Equipe Electrophysiologie de la nutrition minérale et des symbioses racinaires (ELSA), Université de Montpellier (UM)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), and Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)

Subjects
0106 biological sciences, Soil salinity, Osmotic shock, [SDV]Life Sciences [q-bio], Soil biology, Plant Science, Biology, 010603 evolutionary biology, 01 natural sciences, Plant Roots, Salt Stress, Trees, Ectosymbiosis, Membrane transporters, Symbiosis, Mycorrhizae, Botany, Genetics, Salt tolerance, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, Molecular Biology, Ecology, Evolution, Behavior and Systematics, 2. Zero hunger, Water transport, Ectomycorrhizal (ECM) symbiosis, Sodium, Fungi, Water, General Medicine, [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics, 15. Life on land, Nutrient and water transport, Salinity, [SDV.EE.IEO]Life Sciences [q-bio]/Ecology, environment/Symbiosis, 010606 plant biology & botany, Woody plant
Abstract

International audience; Soil salinity is an environmental condition that is currently increasing worldwide. Plant growth under salinity induces osmotic stress and ion toxicity impairing root water and nutrient absorption, but the association with beneficial soil microorganisms has been linked to an improved adaptation to this constraint. The ectomycorrhizal (ECM) symbiosis has been proposed as a key factor for a better tolerance of woody species to salt stress, thanks to the reduction of sodium (Na+) uptake towards photosynthetic organs. Although no precise mechanisms for this enhanced plant salt tolerance have been described yet, in this review, we summarize the knowledge accumulated so far on the role of ECM symbiosis. Moreover, we propose several strategies by which ECM fungi might help plants, including restriction of Na+ entrance into plant tissues and improvement of mineral nutrition and water balances. This positive effect of ECM fungi has been proven in field assays and the results obtained point to a promising application in forestry cultures and reforestation.

Published
2018
Full Text
View/download PDF

6. HcTOK1 participates in the maintenance of K+ homeostasis in the ectomycorrhizal fungus Hebeloma cylindrosporum, which is essential for the symbiotic K+ nutrition of Pinus pinaster

Author

Kevin Garcia, Sabine Zimmermann, Carmen Guerrero-Galán, Gabriella Houdinet, Biochimie et Physiologie Moléculaire des Plantes (BPMP), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Université de Montpellier (UM)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS), Equipe Electrophysiologie de la nutrition minérale et des symbioses racinaires (ELSA), Université de Montpellier (UM)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS), Biochimie et Physiologie Moléculaire des Plantes ( BPMP ), Centre international d'études supérieures en sciences agronomiques ( Montpellier SupAgro ) -Institut national de la recherche agronomique [Montpellier] ( INRA Montpellier ) -Université de Montpellier ( UM ) -Centre National de la Recherche Scientifique ( CNRS ) -Institut national d’études supérieures agronomiques de Montpellier ( Montpellier SupAgro ), Equipe Electrophysiologie de la nutrition minérale et des symbioses racinaires ( ELSA ), and Centre international d'études supérieures en sciences agronomiques ( Montpellier SupAgro ) -Institut national de la recherche agronomique [Montpellier] ( INRA Montpellier ) -Université de Montpellier ( UM ) -Centre National de la Recherche Scientifique ( CNRS ) -Institut national d’études supérieures agronomiques de Montpellier ( Montpellier SupAgro ) -Centre international d'études supérieures en sciences agronomiques ( Montpellier SupAgro ) -Institut national de la recherche agronomique [Montpellier] ( INRA Montpellier ) -Université de Montpellier ( UM ) -Centre National de la Recherche Scientifique ( CNRS ) -Institut national d’études supérieures agronomiques de Montpellier ( Montpellier SupAgro )

Subjects
0106 biological sciences, 0301 basic medicine, Hartig net, [ SDV.BV ] Life Sciences [q-bio]/Vegetal Biology, biology, fungi, Plant Science, Fungus, 15. Life on land, biology.organism_classification, 01 natural sciences, Yeast, Ectosymbiosis, 03 medical and health sciences, 030104 developmental biology, Ion homeostasis, Symbiosis, Botany, Pinus pinaster, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, Plant nutrition, 010606 plant biology & botany
Abstract

Most land plants rely on root symbioses to complement or improve their mineral nutrition. Recent researches have put forward that mycorrhizal fungi efficiently absorb and transfer potassium (K+) from the soil to host plant roots, but the molecular mechanisms involved are not completely elucidated yet. We have recently revealed that K+ is likely released from the fungal Hartig net to the plant by TOK channels in the ectomycorrhizal model Hebeloma cylindrosporum - Pinus pinaster. H. cylindrosporum harbours three TOK members. Herein, we report that one of them, HcTOK1, has similar features than the yeast ScTOK1. Moreover, we propose a role for this channel in the transport of K+ from the medium to ectomycorrhizal roots under K+ starvation.

Published
2018
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results