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Resistance and resilience of root fungal communities to water limitation in a temperate agroecosystem
Understanding crop resilience to environmental stress is critical in predicting the consequences of global climate change for agricultural systems worldwide, but to date studies addressing crop resiliency have focused primarily on plant physiological and molecular responses. Arbuscular mycorrhizal f...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5433968/ https://www.ncbi.nlm.nih.gov/pubmed/28515880 http://dx.doi.org/10.1002/ece3.2900 |
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author | Furze, Jessie R. Martin, Adam R. Nasielski, Joshua Thevathasan, Naresh V. Gordon, Andrew M. Isaac, Marney E. |
author_facet | Furze, Jessie R. Martin, Adam R. Nasielski, Joshua Thevathasan, Naresh V. Gordon, Andrew M. Isaac, Marney E. |
author_sort | Furze, Jessie R. |
collection | PubMed |
description | Understanding crop resilience to environmental stress is critical in predicting the consequences of global climate change for agricultural systems worldwide, but to date studies addressing crop resiliency have focused primarily on plant physiological and molecular responses. Arbuscular mycorrhizal fungi (AMF) form mutualisms with many crop species, and these relationships are key in mitigating the effects of abiotic stress in many agricultural systems. However, to date there is little research examining whether (1) fungal community structure in agroecosystems is resistant to changing environmental conditions, specifically water limitation and (2) resilience of fungal community structure is moderated by agricultural management systems, namely the integration of trees into cropping systems. Here, we address these uncertainties through a rainfall reduction field experiment that manipulated short‐term water availability in a soybean‐based (Glycine max L. Merr.) agroforest in Southern Ontario, Canada. We employed terminal restriction fragment length polymorphism analysis to determine the molecular diversity of both general fungal and AMF communities in soybean roots under no stress, stress (rainfall shelters added), and poststress (rainfall shelters removed). We found that general fungal and AMF communities sampled from soybean roots were resistant to rainfall reduction in a monoculture, but not in an agroforest. While AMF communities were unchanged after stress removal, general fungal communities were significantly different poststress in the agroforest, indicating a capacity for resiliency. Our study indicates that generalist fungi and AMF are responsive to changes in environmental conditions and that agroecosystem management plays a key role in the resistance and resilience of fungal communities to water limitation. |
format | Online Article Text |
id | pubmed-5433968 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-54339682017-05-17 Resistance and resilience of root fungal communities to water limitation in a temperate agroecosystem Furze, Jessie R. Martin, Adam R. Nasielski, Joshua Thevathasan, Naresh V. Gordon, Andrew M. Isaac, Marney E. Ecol Evol Original Research Understanding crop resilience to environmental stress is critical in predicting the consequences of global climate change for agricultural systems worldwide, but to date studies addressing crop resiliency have focused primarily on plant physiological and molecular responses. Arbuscular mycorrhizal fungi (AMF) form mutualisms with many crop species, and these relationships are key in mitigating the effects of abiotic stress in many agricultural systems. However, to date there is little research examining whether (1) fungal community structure in agroecosystems is resistant to changing environmental conditions, specifically water limitation and (2) resilience of fungal community structure is moderated by agricultural management systems, namely the integration of trees into cropping systems. Here, we address these uncertainties through a rainfall reduction field experiment that manipulated short‐term water availability in a soybean‐based (Glycine max L. Merr.) agroforest in Southern Ontario, Canada. We employed terminal restriction fragment length polymorphism analysis to determine the molecular diversity of both general fungal and AMF communities in soybean roots under no stress, stress (rainfall shelters added), and poststress (rainfall shelters removed). We found that general fungal and AMF communities sampled from soybean roots were resistant to rainfall reduction in a monoculture, but not in an agroforest. While AMF communities were unchanged after stress removal, general fungal communities were significantly different poststress in the agroforest, indicating a capacity for resiliency. Our study indicates that generalist fungi and AMF are responsive to changes in environmental conditions and that agroecosystem management plays a key role in the resistance and resilience of fungal communities to water limitation. John Wiley and Sons Inc. 2017-04-05 /pmc/articles/PMC5433968/ /pubmed/28515880 http://dx.doi.org/10.1002/ece3.2900 Text en © 2017 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Research Furze, Jessie R. Martin, Adam R. Nasielski, Joshua Thevathasan, Naresh V. Gordon, Andrew M. Isaac, Marney E. Resistance and resilience of root fungal communities to water limitation in a temperate agroecosystem |
title | Resistance and resilience of root fungal communities to water limitation in a temperate agroecosystem |
title_full | Resistance and resilience of root fungal communities to water limitation in a temperate agroecosystem |
title_fullStr | Resistance and resilience of root fungal communities to water limitation in a temperate agroecosystem |
title_full_unstemmed | Resistance and resilience of root fungal communities to water limitation in a temperate agroecosystem |
title_short | Resistance and resilience of root fungal communities to water limitation in a temperate agroecosystem |
title_sort | resistance and resilience of root fungal communities to water limitation in a temperate agroecosystem |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5433968/ https://www.ncbi.nlm.nih.gov/pubmed/28515880 http://dx.doi.org/10.1002/ece3.2900 |
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