12 results on '"González-Guzmán, Adrián"'
Search Results
2. Soil adequation with organo-mineral substrates designed from wastes for Blueberry.
- Author
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González-Guzmán, Adrián and Arán Ferreiro, Diego
- Published
- 2022
- Full Text
- View/download PDF
3. Elucidating the Effect of Endophytic Entomopathogenic Fungi on Bread Wheat Growth through Signaling of Immune Response-Related Hormones.
- Author
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González-Guzmán, Adrián, Rey, María-Dolores, Froussart, Emilie, and Quesada-Moraga, Enrique
- Subjects
- *
ENDOPHYTIC fungi , *ENTOMOPATHOGENIC fungi , *WHEAT , *SUSTAINABLE agriculture , *INTEGRATED pest control , *BEAUVERIA bassiana , *PLANT hormones - Abstract
Entomopathogenic fungi (EF) provide a potent biocontrol tool; also, their endophytic behavior has broadened their contribution to integrated pest management (IPM) and crop production. In this work, Beauveria bassiana and Metarhizium brunneum were applied to bread wheat (Triticum aestivum) seedlings to elucidate how fungal colonization influences plant growth and the relative expression of 24 genes involved in hormonal syntheses and plant immune mechanisms. A preliminary assay was used to determine the time needed for fungal colonization and assess its effect on wheat growth. Then, plant material collected at various times after inoculation (viz., 2, 8, 20, and 36 h and 9 and 15 days) was used to investigate gene expression by quantitative reverse transcription PCR (RT-qPCR). During the colonization time, B. bassiana and M. brunneum caused strong downregulation of most genes associated with plant immunity and the synthesis of hormones like auxin, cytokinin, and gibberellin. This effect was concomitant with a slowdown of endophytic-colonization-related plant growth until 19 days postinoculation (dpi). However, the wheat started to recover at 15 dpi, simultaneously with upregulation of auxin- and gibberellin-related genes. The results suggest that the EF trigger induced systemic resistance rather than acquired systemic resistance during early plant-microbe cross talk in wheat. Also, they confirm that the hormone and immune responses of wheat triggered by EF inoculation influenced plant growth, which can be useful with a view to optimizing management of these microorganisms for sustainable agriculture. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
4. Public attitudes towards biodiversity-friendly greenspace management in Europe
- Author
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Fischer, Leonie K., Neuenkamp, Lena, Lampinen, Jussi, Tuomi, Maria, Alday, Josu G., Bucharova, Anna, Cancellieri, Laura, Casado-Arzuaga, Izaskun, Ceplova, Natalie, Cervero, Lluisa, Deak, Balazs, Eriksson, Ove, Fellowes, Mark D. E., Fernández de Manuel, Beatriz, Filibeck, Goffredo, González-Guzmán, Adrián, Hinojosa, M. Belen, Kowarnik, Ingo, Lumbierres, Belén, Miguel, Ana, Pardo, Rosa, Pons, Xavier, Rodrigez-Garcia, Encarna, Schroder, Roland, Sperandii, Marta Gaia, Unterweger, Philipp, Valko, Orsolya, Vazquez, Víctor, and Klaus, Valentin H.
- Abstract
Increasing urbanization worldwide calls for more sustainable urban development. Simultaneously, the global biodiversity crisis accentuates the need of fostering biodiversity within cities. Policies supporting urban nature conservation need to understand people’s acceptance of biodiversity-friendly greenspace management. We surveyed more than 2000 people in 19 European cities about their attitudes towards near-natural urban grassland management in public greenspaces, and related their responses to nine sociocultural parameters. Results reveal that people across Europe can support urban biodiversity, yet within the frames of a generally tidy appearance of public greenery. Younger people and those using greenspaces for a greater variety of activities were more likely to favor biodiversity-friendly greenspace management. Additionally, people who were aware of the meaning of biodiversity and those stating responsibility for biodiversity conservation particularly supported biodiversity-friendly greenspace management. Our results point at explicit measures like environmental education to increase public acceptance of policies that facilitate nature conservation within cities.
- Published
- 2020
5. Optimum Olsen Phosphorus/ZincDTPA ratio for the initial growth of maize in agricultural soils of the Mediterranean region.
- Author
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Sacristán, Daniel, González‐Guzmán, Adrián, Torrent, José, and Campillo, María Carmen
- Subjects
- *
SOILS , *CORN , *FERTILIZER application , *CALCAREOUS soils , *CHEMICAL industry - Abstract
BACKGROUND: Zinc (Zn) deficiency in crops is commonly aggravated by high levels of phosphorus (P) in soil. In this work, the initial performance of pot‐growing maize in response to the available P and Zn in soils with low available Zn and to the application of P and Zn fertilizers was investigated. RESULTS: The soils (six non‐calcareous and 14 calcareous) ranged widely in available P (Olsen P: 5.5–37.9 mg kg−1), were poor in available Zn [diethylenetriaminepentaacetic acid‐extractable Zn (ZnDTPA): 0.20–0.84 mg kg−1] and had an Olsen P/ZnDTPA ratio of 13 to 111 mg mg−1. Soil P application generally increased aerial dry matter (ADM) yield; Zn increased ADM yield mostly when applied in combination with P; and the sole application of Zn increased yield only in a soil with a high (28 mg kg−1) Olsen P and a low (0.36 mg kg−1) ZnDTPA. The increase in ADM yield resulting from optimal application of P and/or Zn to the soil was modest in soils where the Olsen P/ZnDTPA ratio was 30–60 and Olsen P was >14 mg kg−1. Zinc uptake by the control plants was correlated with the ZnDTPA of the soil. For a certain ZnDTPA value, the level of plant available Zn was higher in non‐calcareous than in calcareous soils. CONCLUSION: Soil application of fertilizer P and Zn, in soils with low levels of available Zn, should not only aim at increasing the available P and Zn levels but also balancing them at the appropriate Olsen P/ZnDTPA ratio, which was found to lie in the 30–60 range in the present study. © 2020 Society of Chemical Industry [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
6. Acceptance of near-natural greenspace management relates to ecological and socio-cultural assigned values among European urbanites.
- Author
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Lampinen, Jussi, Tuomi, Maria, Fischer, Leonie K., Neuenkamp, Lena, Alday, Josu G., Bucharova, Anna, Cancellieri, Laura, Casado-Arzuaga, Izaskun, Čeplová, Natálie, Cerveró, Lluïsa, Deák, Balázs, Eriksson, Ove, Fellowes, Mark D.E., de Manuel, Beatriz Fernández, Filibeck, Goffredo, González-Guzmán, Adrián, Hinojosa, M. Belen, Kowarik, Ingo, Lumbierres, Belén, and Miguel, Ana
- Subjects
CITY dwellers ,URBAN biodiversity ,BIODIVERSITY conservation ,URBAN planning ,GRASSLANDS - Abstract
Grasslands are widespread elements of urban greenspace providing recreational, psychological and aesthetic benefits to city residents. Two urban grassland types of contrasting management dominate urban greenspaces: frequently mown, species-poor short-cut lawns and less intensively managed, near-natural tall-grass meadows. The higher conservation value of tall-grass meadows makes management interventions such as converting short-cut lawns into tall-grass meadows a promising tool for urban biodiversity conservation. The societal success of such interventions, however, depends on identifying the values urban residents assign to different types of urban grasslands, and how these values translate to attitudes towards greenspace management. Using 2027 questionnaires across 19 European cities, we identify the assigned values that correlate with people's personal greenspace use and their preferences for different types of urban grasslands to determine how these values relate to the agreement with a scenario of converting 50% of their cities' short-cut lawns into tall-grass meadows. We found that most people assigned nature-related values, such as wildness, to tall-grass meadows and utility-related values, such as recreation, to short-cut lawns. Positive value associations of wildness and species richness with tall-grass meadows, and social and nature-related greenspace activities, positively correlated with agreeing to convert short-cut lawns into tall-grass meadows. Conversely, disapproval of lawn conversion correlated with positive value associations of cleanliness and recreation potential with short-cut lawns. Here, people using greenspaces for nature-related activities were outstandingly positive about lawn conversion. The results show that the plurality of values assigned to different types of urban grasslands should be considered in urban greenspace planning. For example, tall-grass meadows could be managed to also accommodate the values associated with short-cut lawns, such as tidiness and recreation potential, to support their societal acceptance. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
7. Effects of entomopathogenic fungi on growth and nutrition in wheat grown on two calcareous soils: Influence of the fungus application method.
- Author
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González‐Guzmán, Adrián, Sacristán, Daniel, Quesada‐Moraga, Enrique, Torrent, José, Campillo, María Carmen, and Sánchez‐Rodríguez, Antonio Rafael
- Subjects
- *
ENTOMOPATHOGENIC fungi , *WHEAT farming , *FUNGAL growth , *SOIL fungi , *CALCAREOUS soils , *INSECT nematodes , *DURUM wheat , *HYDROCOLLOID surgical dressings - Abstract
Entomopathogenic fungi (EF) have so far aroused little interest as plant growth promoters or nutritional enhancers while protecting the plant against insect pests and mites. In this work, we examined the performance of Triticum durum and Triticum aestivum plants pot‐grown on two unsterilized Zn‐poor calcareous Vertisols and inoculated with Beauveria bassiana or Metarhizium brunneum by application to soil or seed dressing. The effects of fungal inoculation were found to depend on crop species, soil type, sampling time and fungus application method. While the height of the control plants tended to be significantly greater than the height of inoculated plants at early and intermediate growth stages, the trend changed at more advanced plant stage of development, 56 days after sowing (DAS). This was supported by the significant increase in aerial dry matter (ADM) in T. aestivum plants treated with B. bassiana by seed dressing (17.4%) or with M. brunneum with soil application and seed dressing (20.6 and 26.9%, respectively) 69 DAS. In T. durum, at harvest, seed dressing with B. bassiana or M. brunneum had an overall positive but not significant effect on ADM or grain yield, whereas direct application to the soil slightly decreased grain yield (6.6 and 5.5%, respectively) and ADM (5.3 and 6.1%, respectively). In T. aestivum, none of the fungus–application method combinations affected yield at harvest significantly. Fungal inoculation had little influence on nutrient uptake, whereas application to soil increased Mn uptake and grain Mn concentration in T. durum. Zinc uptake was significantly increased only in T. aestivum grown on the soil with the lowest Zn content treated with M. brunneum. Grain Zn concentration tended to be inversely related to grain yield. These results support seed dressing with EF as a promising green technology for sustainable crop protection and production with no adverse effects on plant performance. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
8. Correction for González-Guzmán et al., “Elucidating the Effect of Endophytic Entomopathogenic Fungi on Bread Wheat Growth through Signaling of Immune Response-Related Hormones”.
- Author
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González-Guzmán, Adrián, Rey, María-Dolores, Froussart, Emilie, and Quesada-Moraga, Enrique
- Subjects
- *
ENTOMOPATHOGENIC fungi , *ENDOPHYTIC fungi , *WHEAT , *BREAD , *MICROBIAL ecology - Published
- 2023
- Full Text
- View/download PDF
9. Soil Nutrients Effects on the Performance of Durum Wheat Inoculated with Entomopathogenic Fungi.
- Author
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González-Guzmán, Adrián, Sacristán, Daniel, Sánchez-Rodríguez, Antonio Rafael, Barrón, Vidal, Torrent, José, and del Campillo, María Carmen
- Subjects
- *
ENTOMOPATHOGENIC fungi , *GRAIN yields , *DURUM wheat , *BIOFERTILIZERS , *SOILS , *BEAUVERIA bassiana , *NUTRIENT uptake - Abstract
Entomopathogenic fungi (EFs) are widely used as biological control agents. However, some strains of Beauveria bassiana and Metarhizium brunneum can also promote plant growth and increase nutrient uptake. We examined the effects of soil properties on the performance of Triticum durum inoculated by seed dressing with these EFs and grown on 12 agricultural soils. The plants were supplied with all nutrients except P and Zn (essential for yield and the grain quality of wheat). Fungal inoculation increased the grain yield and harvest index significantly with B. bassiana (17% and 14%, respectively) but not with M. brunneum (6% and 6%, respectively). The increase in grain yield was positively and moderately correlated with the soil available phosphorus (POlsen) in plants inoculated with B. bassiana and with the soil content in poorly crystalline Fe oxides with M. brunneum. In addition, the increase in aerial dry matter resulting from inoculation with B. bassiana was negatively correlated with soil available Zn. Furthermore, the observed increase in grain yields due to fungal inoculation resulted in P and Zn grain dilution (grain nutrient concentrations decrease). Inoculation with B. bassiana increased grain Zn uptake and the proportion of Zn in grain relative to that in aerial dry matter. Success in the mutualistic relationship between EF and wheat plants depends on the fungal strain and soil properties. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
10. Acceptance of near-natural greenspace management relates to ecological and socio-cultural assigned values among European urbanites
- Author
-
Lampinen, Jussi, Tuomi, Maria, Fischer, Leonie K., Neuenkamp, Lena, Alday, Josu G., Bucharova, Anna, Cancellieri, Laura, Casado‐Arzuaga, Izaskun, Čeplová, Natálie, Cerveró, Lluïsa, Deák, Balázs, Eriksson, Ove, Fellowes, Mark D.E., Fernández de Manuel, Beatriz, Filibeck, Goffredo, González‐Guzmán, Adrián, Hinojosa, M. Belen, Kowarik, Ingo, Lumbierres, Belén, Miguel, Ana, Pardo, Rosa, Pons, Xavier, Rodríguez‐García, Encarna, Schröder, Roland, Gaia Sperandii, Marta, Unterweger, Philipp, Valkó, Orsolya, Vázquez, Víctor, and Klaus, Valentin H.
- Subjects
Urban biodiversity conservation ,11. Sustainability ,Socio-ecological systems ,Urban greenspace ,Lawn management ,Green infrastructure ,Urban grasslands ,15. Life on land ,Nature-related values ,Ecological restoration - Abstract
Grasslands are widespread elements of urban greenspace providing recreational, psychological and aesthetic benefits to city residents. Two urban grassland types of contrasting management dominate urban greenspaces: frequently mown, species-poor short-cut lawns and less intensively managed, near-natural tall-grass meadows. The higher conservation value of tall-grass meadows makes management interventions such as converting short-cut lawns into tall-grass meadows a promising tool for urban biodiversity conservation. The societal success of such interventions, however, depends on identifying the values urban residents assign to different types of urban grasslands, and how these values translate to attitudes towards greenspace management. Using 2027 questionnaires across 19 European cities, we identify the assigned values that correlate with people's personal greenspace use and their preferences for different types of urban grasslands to determine how these values relate to the agreement with a scenario of converting 50% of their cities’ short-cut lawns into tall-grass meadows. We found that most people assigned nature-related values, such as wildness, to tall-grass meadows and utility-related values, such as recreation, to short-cut lawns. Positive value associations of wildness and species richness with tall-grass meadows, and social and nature-related greenspace activities, positively correlated with agreeing to convert short-cut lawns into tall-grass meadows. Conversely, disapproval of lawn conversion correlated with positive value associations of cleanliness and recreation potential with short-cut lawns. Here, people using greenspaces for nature-related activities were outstandingly positive about lawn conversion. The results show that the plurality of values assigned to different types of urban grasslands should be considered in urban greenspace planning. For example, tall-grass meadows could be managed to also accommodate the values associated with short-cut lawns, such as tidiness and recreation potential, to support their societal acceptance., Basic and Applied Ecology, 50, ISSN:1439-1791, ISSN:1618-0089
11. Optimum Olsen Phosphorus/Zinc DTPA ratio for the initial growth of maize in agricultural soils of the Mediterranean region.
- Author
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Sacristán D, González-Guzmán A, Torrent J, and Del Campillo MC
- Subjects
- Crop Production instrumentation, Fertilizers analysis, Mediterranean Region, Pentetic Acid analysis, Pentetic Acid metabolism, Phosphorus metabolism, Soil chemistry, Zea mays metabolism, Zinc metabolism, Crop Production methods, Phosphorus analysis, Zea mays growth & development, Zinc analysis
- Abstract
Background: Zinc (Zn) deficiency in crops is commonly aggravated by high levels of phosphorus (P) in soil. In this work, the initial performance of pot-growing maize in response to the available P and Zn in soils with low available Zn and to the application of P and Zn fertilizers was investigated., Results: The soils (six non-calcareous and 14 calcareous) ranged widely in available P (Olsen P: 5.5-37.9 mg kg
-1 ), were poor in available Zn [diethylenetriaminepentaacetic acid-extractable Zn (ZnDTPA ): 0.20-0.84 mg kg-1 ] and had an Olsen P/ZnDTPA ratio of 13 to 111 mg mg-1 . Soil P application generally increased aerial dry matter (ADM) yield; Zn increased ADM yield mostly when applied in combination with P; and the sole application of Zn increased yield only in a soil with a high (28 mg kg-1 ) Olsen P and a low (0.36 mg kg-1 ) ZnDTPA . The increase in ADM yield resulting from optimal application of P and/or Zn to the soil was modest in soils where the Olsen P/ZnDTPA ratio was 30-60 and Olsen P was >14 mg kg-1 . Zinc uptake by the control plants was correlated with the ZnDTPA of the soil. For a certain ZnDTPA value, the level of plant available Zn was higher in non-calcareous than in calcareous soils., Conclusion: Soil application of fertilizer P and Zn, in soils with low levels of available Zn, should not only aim at increasing the available P and Zn levels but also balancing them at the appropriate Olsen P/ZnDTPA ratio, which was found to lie in the 30-60 range in the present study. © 2020 Society of Chemical Industry., (© 2020 Society of Chemical Industry.)- Published
- 2021
- Full Text
- View/download PDF
12. Photochemical emission and fixation of NO X gases in soils.
- Author
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Barrón V, Méndez JM, Balbuena J, Cruz-Yusta M, Sánchez L, Giménez C, Sacristán D, González-Guzmán A, Sánchez-Rodríguez AR, Skiba UM, Inda AV, Marques J Jr, Recio JM, Delgado A, Del Campillo MC, and Torrent J
- Abstract
Gaseous nitrogen oxides (NOx), which result from the combustion of fossil fuels, volcanic eruptions, forest fires, and biological reactions in soils, not only affect air quality and the atmospheric concentration of ozone, but also contribute to global warming and acid rain. Soil NOx emissions have been largely ascribed to soil microbiological processes; but there is no proof of abiotic catalytic activity affecting soil NO emissions. We provide evidence of gas exchange in soils involving emissions of NOx by photochemical reactions, and their counterpart fixation through photocatalytic reactions under UV-visible irradiation. The catalytic activity promoting NOx capture as nitrate varied widely amongst different soil types, from low in quartzitic sandy soils to high in iron oxide and TiO
2 rich soils. Clay soils with significant amounts of smectite also exhibited high rates of NOx sequestration and fixed amounts of N comparable to that of NO (nitric oxide) losses through biotic reactions. In these soils, a flux of 100 µg NNO m-2 h-1 , as usually found in most ecosystems, could be reduced by these photochemical reactions by more than 60%. This mechanism of N fixation provides new insight into the nitrogen cycle and may inspire alternative strategies to reduce NO emissions from soils., (Copyright © 2019 Elsevier B.V. All rights reserved.)- Published
- 2020
- Full Text
- View/download PDF
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