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Effects of habitat constraints on soil microbial community function

An underlying assumption of most soil carbon (C) dynamics models is that soil microbial communities are functionally similar; in other words, that microbial activity under given conditions is not dependent on the composition or diversity of the communities. Although a number of studies have indicate...

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Autores principales: Nunan, Naoise, Leloup, Julie, Ruamps, Léo S., Pouteau, Valérie, Chenu, Claire
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5487364/
https://www.ncbi.nlm.nih.gov/pubmed/28655916
http://dx.doi.org/10.1038/s41598-017-04485-z
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author Nunan, Naoise
Leloup, Julie
Ruamps, Léo S.
Pouteau, Valérie
Chenu, Claire
author_facet Nunan, Naoise
Leloup, Julie
Ruamps, Léo S.
Pouteau, Valérie
Chenu, Claire
author_sort Nunan, Naoise
collection PubMed
description An underlying assumption of most soil carbon (C) dynamics models is that soil microbial communities are functionally similar; in other words, that microbial activity under given conditions is not dependent on the composition or diversity of the communities. Although a number of studies have indicated that microbial communities are not intrinsically functionally similar, most soil C dynamics models can adequately describe C dynamics without explicitly describing microbial functioning. Here, we provide a mechanistic basis for reconciling this apparent discrepancy. In a reciprocal transplant experiment, we show that the environmental context (soil and pore-network properties) of microbial communities can constrain the activity of functionally different communities to such an extent that their activities are indistinguishable. The data also suggest that when microbial activity is less constrained, the intrinsic functional differences among communities can be expressed. We conclude that soil C dynamics may depend on microbial community structure or diversity in environments where their activity is less constrained, such as the rhizosphere or the litter layer, but not in oligotrophic environments such as the mineral layers of soil.
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spelling pubmed-54873642017-06-30 Effects of habitat constraints on soil microbial community function Nunan, Naoise Leloup, Julie Ruamps, Léo S. Pouteau, Valérie Chenu, Claire Sci Rep Article An underlying assumption of most soil carbon (C) dynamics models is that soil microbial communities are functionally similar; in other words, that microbial activity under given conditions is not dependent on the composition or diversity of the communities. Although a number of studies have indicated that microbial communities are not intrinsically functionally similar, most soil C dynamics models can adequately describe C dynamics without explicitly describing microbial functioning. Here, we provide a mechanistic basis for reconciling this apparent discrepancy. In a reciprocal transplant experiment, we show that the environmental context (soil and pore-network properties) of microbial communities can constrain the activity of functionally different communities to such an extent that their activities are indistinguishable. The data also suggest that when microbial activity is less constrained, the intrinsic functional differences among communities can be expressed. We conclude that soil C dynamics may depend on microbial community structure or diversity in environments where their activity is less constrained, such as the rhizosphere or the litter layer, but not in oligotrophic environments such as the mineral layers of soil. Nature Publishing Group UK 2017-06-27 /pmc/articles/PMC5487364/ /pubmed/28655916 http://dx.doi.org/10.1038/s41598-017-04485-z Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Nunan, Naoise
Leloup, Julie
Ruamps, Léo S.
Pouteau, Valérie
Chenu, Claire
Effects of habitat constraints on soil microbial community function
title Effects of habitat constraints on soil microbial community function
title_full Effects of habitat constraints on soil microbial community function
title_fullStr Effects of habitat constraints on soil microbial community function
title_full_unstemmed Effects of habitat constraints on soil microbial community function
title_short Effects of habitat constraints on soil microbial community function
title_sort effects of habitat constraints on soil microbial community function
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5487364/
https://www.ncbi.nlm.nih.gov/pubmed/28655916
http://dx.doi.org/10.1038/s41598-017-04485-z
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