The role of inoculum identity in drought stress mitigation by arbuscular mycorrhizal fungi in soybean
It is well known that arbuscular mycorrhizal fungi (AMF) effects on plant growth largely depend on fungus identity. The objective of this study was to test whether three individual AMF isolates and their mixture mitigate drought stress (DS) differentially in soybean (Glycine max) genotype, predictin...
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| Format: | info:ar-repo/semantics/artículo |
| Language: | Inglés |
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2018
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| Online Access: | https://link.springer.com/article/10.1007/s00374-014-0942-7 http://hdl.handle.net/20.500.12123/3717 https://doi.org/10.1007/s00374-014-0942-7 |
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| author | Grumberg, Betiana Clarisa Urcelay, Roberto Carlos Shroeder, María A. Vargas Gil, Silvina Luna, Celina Mercedes |
| author_browse | Grumberg, Betiana Clarisa Luna, Celina Mercedes Shroeder, María A. Urcelay, Roberto Carlos Vargas Gil, Silvina |
| author_facet | Grumberg, Betiana Clarisa Urcelay, Roberto Carlos Shroeder, María A. Vargas Gil, Silvina Luna, Celina Mercedes |
| author_sort | Grumberg, Betiana Clarisa |
| collection | INTA Digital |
| description | It is well known that arbuscular mycorrhizal fungi (AMF) effects on plant growth largely depend on fungus identity. The objective of this study was to test whether three individual AMF isolates and their mixture mitigate drought stress (DS) differentially in soybean (Glycine max) genotype, predicting that under DS, the mixture of the AMF isolates would provide greater benefits to soybean plants than individual ones. In a greenhouse experiment, a drought-susceptible soybean genotype was inoculated with Septoglomus constrictum, Glomus sp., and Glomus aggregatum, known to be among the most abundant in agricultural and natural soils from central Argentina, and their mixture (Mx). Whereas under well-watered (WW) conditions, individual isolates and Mx treatment were similarly infective; under DS conditions, the Mx treatment showed lower rates of root colonization. Between WW and DS conditions, biomass was decreased in all treatments, although this effect was more marked in non-AM plants. Moreover, AMF strains improved water content and P and N concentrations. Under DS, the Mx treatment was unable to exceed the highest contents that were recorded by AMF isolates. However, under WW conditions, the Mx treatment showed a higher N content than individual isolates. Under both watering conditions, AM plants reduced oxidative damage evaluated as malondiadehyde and chlorophyll content and keep constant osmotic metabolites such as soluble sugars and proline content, without significant differences between AMF isolates and the Mx treatment. These results show that AMF play an important role in mitigating drought impacts on soybean, but that mixtures of AMF isolates did not perform as well as the best single strain inoculum, excluding complementarity effects and suggesting selection effect of AMF on DS alleviation in soybean. |
| format | info:ar-repo/semantics/artículo |
| id | INTA3717 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| record_format | dspace |
| spelling | INTA37172018-10-26T12:27:46Z The role of inoculum identity in drought stress mitigation by arbuscular mycorrhizal fungi in soybean Grumberg, Betiana Clarisa Urcelay, Roberto Carlos Shroeder, María A. Vargas Gil, Silvina Luna, Celina Mercedes Soja Estrés de Sequia Micorrizas Arbusculares Hongos Glycine Max Soybeans Drought Stress Arbuscular Mycorrhiza Fungi It is well known that arbuscular mycorrhizal fungi (AMF) effects on plant growth largely depend on fungus identity. The objective of this study was to test whether three individual AMF isolates and their mixture mitigate drought stress (DS) differentially in soybean (Glycine max) genotype, predicting that under DS, the mixture of the AMF isolates would provide greater benefits to soybean plants than individual ones. In a greenhouse experiment, a drought-susceptible soybean genotype was inoculated with Septoglomus constrictum, Glomus sp., and Glomus aggregatum, known to be among the most abundant in agricultural and natural soils from central Argentina, and their mixture (Mx). Whereas under well-watered (WW) conditions, individual isolates and Mx treatment were similarly infective; under DS conditions, the Mx treatment showed lower rates of root colonization. Between WW and DS conditions, biomass was decreased in all treatments, although this effect was more marked in non-AM plants. Moreover, AMF strains improved water content and P and N concentrations. Under DS, the Mx treatment was unable to exceed the highest contents that were recorded by AMF isolates. However, under WW conditions, the Mx treatment showed a higher N content than individual isolates. Under both watering conditions, AM plants reduced oxidative damage evaluated as malondiadehyde and chlorophyll content and keep constant osmotic metabolites such as soluble sugars and proline content, without significant differences between AMF isolates and the Mx treatment. These results show that AMF play an important role in mitigating drought impacts on soybean, but that mixtures of AMF isolates did not perform as well as the best single strain inoculum, excluding complementarity effects and suggesting selection effect of AMF on DS alleviation in soybean. Instituto de Fisiología y Recursos Genéticos Vegetales Fil: Grumberg, Betiana Clarisa. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales; Argentina Fil: Urcelay, Roberto Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Shroeder, María A.. Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias. Departamento de Física y Química. Cátedra de Química Analítica y Agrícola; Argentina Fil: Vargas Gil, Silvina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales; Argentina Fil: Luna, Celina Mercedes. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales; Argentina 2018-10-26T12:25:25Z 2018-10-26T12:25:25Z 2015-01 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://link.springer.com/article/10.1007/s00374-014-0942-7 http://hdl.handle.net/20.500.12123/3717 0178-2762 1432-0789 https://doi.org/10.1007/s00374-014-0942-7 eng info:eu-repo/semantics/restrictedAccess application/pdf Biology and Fertility of Soils 51 (1) : 1–10 (January 2015) |
| spellingShingle | Soja Estrés de Sequia Micorrizas Arbusculares Hongos Glycine Max Soybeans Drought Stress Arbuscular Mycorrhiza Fungi Grumberg, Betiana Clarisa Urcelay, Roberto Carlos Shroeder, María A. Vargas Gil, Silvina Luna, Celina Mercedes The role of inoculum identity in drought stress mitigation by arbuscular mycorrhizal fungi in soybean |
| title | The role of inoculum identity in drought stress mitigation by arbuscular mycorrhizal fungi in soybean |
| title_full | The role of inoculum identity in drought stress mitigation by arbuscular mycorrhizal fungi in soybean |
| title_fullStr | The role of inoculum identity in drought stress mitigation by arbuscular mycorrhizal fungi in soybean |
| title_full_unstemmed | The role of inoculum identity in drought stress mitigation by arbuscular mycorrhizal fungi in soybean |
| title_short | The role of inoculum identity in drought stress mitigation by arbuscular mycorrhizal fungi in soybean |
| title_sort | role of inoculum identity in drought stress mitigation by arbuscular mycorrhizal fungi in soybean |
| topic | Soja Estrés de Sequia Micorrizas Arbusculares Hongos Glycine Max Soybeans Drought Stress Arbuscular Mycorrhiza Fungi |
| url | https://link.springer.com/article/10.1007/s00374-014-0942-7 http://hdl.handle.net/20.500.12123/3717 https://doi.org/10.1007/s00374-014-0942-7 |
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