Long-Term Warming in Alaska Enlarges the Diazotrophic Community in Deep Soils
Tundra ecosystems are typically carbon (C) rich but nitrogen (N) limited. Since biological N(2) fixation is the major source of biologically available N, the soil N(2)-fixing (i.e., diazotrophic) community serves as an essential N supplier to the tundra ecosystem. Recent climate warming has induced...
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ftpubmed:oai:pubmedcentral.nih.gov:6391920 2023-05-15T17:57:57+02:00 Long-Term Warming in Alaska Enlarges the Diazotrophic Community in Deep Soils Feng, Jiajie Penton, C. Ryan He, Zhili Van Nostrand, Joy D. Yuan, Mengting M. Wu, Liyou Wang, Cong Qin, Yujia Shi, Zhou J. Guo, Xue Schuur, Edward A. G. Luo, Yiqi Bracho, Rosvel Konstantinidis, Konstantinos T. Cole, James R. Tiedje, James M. Yang, Yunfeng Zhou, Jizhong 2019-02-26 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6391920/ http://www.ncbi.nlm.nih.gov/pubmed/30808694 https://doi.org/10.1128/mBio.02521-18 en eng American Society for Microbiology http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6391920/ http://www.ncbi.nlm.nih.gov/pubmed/30808694 http://dx.doi.org/10.1128/mBio.02521-18 Copyright © 2019 Feng et al. https://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/) . CC-BY Research Article Text 2019 ftpubmed https://doi.org/10.1128/mBio.02521-18 2019-03-10T01:14:35Z Tundra ecosystems are typically carbon (C) rich but nitrogen (N) limited. Since biological N(2) fixation is the major source of biologically available N, the soil N(2)-fixing (i.e., diazotrophic) community serves as an essential N supplier to the tundra ecosystem. Recent climate warming has induced deeper permafrost thaw and adversely affected C sequestration, which is modulated by N availability. Therefore, it is crucial to examine the responses of diazotrophic communities to warming across the depths of tundra soils. Herein, we carried out one of the deepest sequencing efforts of nitrogenase gene (nifH) to investigate how 5 years of experimental winter warming affects Alaskan soil diazotrophic community composition and abundance spanning both the organic and mineral layers. Although soil depth had a stronger influence on diazotrophic community composition than warming, warming significantly (P < 0.05) enhanced diazotrophic abundance by 86.3% and aboveground plant biomass by 25.2%. Diazotrophic composition in the middle and lower organic layers, detected by nifH sequencing and a microarray-based tool (GeoChip), was markedly altered, with an increase of α-diversity. Changes in diazotrophic abundance and composition significantly correlated with soil moisture, soil thaw duration, and plant biomass, as shown by structural equation modeling analyses. Therefore, more abundant diazotrophic communities induced by warming may potentially serve as an important mechanism for supplementing biologically available N in this tundra ecosystem. Text permafrost Tundra Alaska PubMed Central (PMC) mBio 10 1 |
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Research Article |
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Research Article Feng, Jiajie Penton, C. Ryan He, Zhili Van Nostrand, Joy D. Yuan, Mengting M. Wu, Liyou Wang, Cong Qin, Yujia Shi, Zhou J. Guo, Xue Schuur, Edward A. G. Luo, Yiqi Bracho, Rosvel Konstantinidis, Konstantinos T. Cole, James R. Tiedje, James M. Yang, Yunfeng Zhou, Jizhong Long-Term Warming in Alaska Enlarges the Diazotrophic Community in Deep Soils |
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Research Article |
description |
Tundra ecosystems are typically carbon (C) rich but nitrogen (N) limited. Since biological N(2) fixation is the major source of biologically available N, the soil N(2)-fixing (i.e., diazotrophic) community serves as an essential N supplier to the tundra ecosystem. Recent climate warming has induced deeper permafrost thaw and adversely affected C sequestration, which is modulated by N availability. Therefore, it is crucial to examine the responses of diazotrophic communities to warming across the depths of tundra soils. Herein, we carried out one of the deepest sequencing efforts of nitrogenase gene (nifH) to investigate how 5 years of experimental winter warming affects Alaskan soil diazotrophic community composition and abundance spanning both the organic and mineral layers. Although soil depth had a stronger influence on diazotrophic community composition than warming, warming significantly (P < 0.05) enhanced diazotrophic abundance by 86.3% and aboveground plant biomass by 25.2%. Diazotrophic composition in the middle and lower organic layers, detected by nifH sequencing and a microarray-based tool (GeoChip), was markedly altered, with an increase of α-diversity. Changes in diazotrophic abundance and composition significantly correlated with soil moisture, soil thaw duration, and plant biomass, as shown by structural equation modeling analyses. Therefore, more abundant diazotrophic communities induced by warming may potentially serve as an important mechanism for supplementing biologically available N in this tundra ecosystem. |
format |
Text |
author |
Feng, Jiajie Penton, C. Ryan He, Zhili Van Nostrand, Joy D. Yuan, Mengting M. Wu, Liyou Wang, Cong Qin, Yujia Shi, Zhou J. Guo, Xue Schuur, Edward A. G. Luo, Yiqi Bracho, Rosvel Konstantinidis, Konstantinos T. Cole, James R. Tiedje, James M. Yang, Yunfeng Zhou, Jizhong |
author_facet |
Feng, Jiajie Penton, C. Ryan He, Zhili Van Nostrand, Joy D. Yuan, Mengting M. Wu, Liyou Wang, Cong Qin, Yujia Shi, Zhou J. Guo, Xue Schuur, Edward A. G. Luo, Yiqi Bracho, Rosvel Konstantinidis, Konstantinos T. Cole, James R. Tiedje, James M. Yang, Yunfeng Zhou, Jizhong |
author_sort |
Feng, Jiajie |
title |
Long-Term Warming in Alaska Enlarges the Diazotrophic Community in Deep Soils |
title_short |
Long-Term Warming in Alaska Enlarges the Diazotrophic Community in Deep Soils |
title_full |
Long-Term Warming in Alaska Enlarges the Diazotrophic Community in Deep Soils |
title_fullStr |
Long-Term Warming in Alaska Enlarges the Diazotrophic Community in Deep Soils |
title_full_unstemmed |
Long-Term Warming in Alaska Enlarges the Diazotrophic Community in Deep Soils |
title_sort |
long-term warming in alaska enlarges the diazotrophic community in deep soils |
publisher |
American Society for Microbiology |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6391920/ http://www.ncbi.nlm.nih.gov/pubmed/30808694 https://doi.org/10.1128/mBio.02521-18 |
genre |
permafrost Tundra Alaska |
genre_facet |
permafrost Tundra Alaska |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6391920/ http://www.ncbi.nlm.nih.gov/pubmed/30808694 http://dx.doi.org/10.1128/mBio.02521-18 |
op_rights |
Copyright © 2019 Feng et al. https://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/) . |
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CC-BY |
op_doi |
https://doi.org/10.1128/mBio.02521-18 |
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mBio |
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10 |
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1 |
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