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Nitrogen deposition and management practices increase soil microbial biomass carbon but decrease diversity in Moso bamboo plantations

Because microbial communities play a key role in carbon (C) and nitrogen (N) cycling, changes in the soil microbial community may directly affect ecosystem functioning. However, the effects of N deposition and management practices on soil microbes are still poorly understood. We studied the effects...

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Autores principales: Li, Quan, Song, Xinzhang, Gu, Honghao, Gao, Fei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4908385/
https://www.ncbi.nlm.nih.gov/pubmed/27302857
http://dx.doi.org/10.1038/srep28235
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author Li, Quan
Song, Xinzhang
Gu, Honghao
Gao, Fei
author_facet Li, Quan
Song, Xinzhang
Gu, Honghao
Gao, Fei
author_sort Li, Quan
collection PubMed
description Because microbial communities play a key role in carbon (C) and nitrogen (N) cycling, changes in the soil microbial community may directly affect ecosystem functioning. However, the effects of N deposition and management practices on soil microbes are still poorly understood. We studied the effects of these two factors on soil microbial biomass carbon (MBC) and community composition in Moso bamboo plantations using high-throughput sequencing of the 16S rRNA gene. Plantations under conventional (CM) or intensive management (IM) were subjected to one of four N treatments for 30 months. IM and N addition, both separately and in combination, significantly increased soil MBC while decreasing bacterial diversity. However, increases in soil MBC were inhibited when N addition exceeded 60 kg N∙ha(−1)∙yr(−1). IM increased the relative abundances of Actinobacteria and Crenarchaeota but decreased that of Acidobacteria. N addition increased the relative abundances of Acidobacteria, Crenarchaeota, and Actinobacteria but decreased that of Proteobacteria. Soil bacterial diversity was significantly related to soil pH, C/N ratio, and nitrogen and available phosphorus content. Management practices exerted a greater influence over regulation of the soil MBC and microbial diversity compared to that of N deposition in Moso bamboo plantations.
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spelling pubmed-49083852016-06-15 Nitrogen deposition and management practices increase soil microbial biomass carbon but decrease diversity in Moso bamboo plantations Li, Quan Song, Xinzhang Gu, Honghao Gao, Fei Sci Rep Article Because microbial communities play a key role in carbon (C) and nitrogen (N) cycling, changes in the soil microbial community may directly affect ecosystem functioning. However, the effects of N deposition and management practices on soil microbes are still poorly understood. We studied the effects of these two factors on soil microbial biomass carbon (MBC) and community composition in Moso bamboo plantations using high-throughput sequencing of the 16S rRNA gene. Plantations under conventional (CM) or intensive management (IM) were subjected to one of four N treatments for 30 months. IM and N addition, both separately and in combination, significantly increased soil MBC while decreasing bacterial diversity. However, increases in soil MBC were inhibited when N addition exceeded 60 kg N∙ha(−1)∙yr(−1). IM increased the relative abundances of Actinobacteria and Crenarchaeota but decreased that of Acidobacteria. N addition increased the relative abundances of Acidobacteria, Crenarchaeota, and Actinobacteria but decreased that of Proteobacteria. Soil bacterial diversity was significantly related to soil pH, C/N ratio, and nitrogen and available phosphorus content. Management practices exerted a greater influence over regulation of the soil MBC and microbial diversity compared to that of N deposition in Moso bamboo plantations. Nature Publishing Group 2016-06-15 /pmc/articles/PMC4908385/ /pubmed/27302857 http://dx.doi.org/10.1038/srep28235 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Li, Quan
Song, Xinzhang
Gu, Honghao
Gao, Fei
Nitrogen deposition and management practices increase soil microbial biomass carbon but decrease diversity in Moso bamboo plantations
title Nitrogen deposition and management practices increase soil microbial biomass carbon but decrease diversity in Moso bamboo plantations
title_full Nitrogen deposition and management practices increase soil microbial biomass carbon but decrease diversity in Moso bamboo plantations
title_fullStr Nitrogen deposition and management practices increase soil microbial biomass carbon but decrease diversity in Moso bamboo plantations
title_full_unstemmed Nitrogen deposition and management practices increase soil microbial biomass carbon but decrease diversity in Moso bamboo plantations
title_short Nitrogen deposition and management practices increase soil microbial biomass carbon but decrease diversity in Moso bamboo plantations
title_sort nitrogen deposition and management practices increase soil microbial biomass carbon but decrease diversity in moso bamboo plantations
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4908385/
https://www.ncbi.nlm.nih.gov/pubmed/27302857
http://dx.doi.org/10.1038/srep28235
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