Microbial functional diversity covaries with permafrost thaw‐induced environmental heterogeneity in tundra soil
Permafrost soil in high latitude tundra is one of the largest terrestrial carbon (C) stocks and is highly sensitive to climate warming. Understanding microbial responses to warming-induced environmental changes is critical to evaluating their influences on soil biogeochemical cycles. In this study,...
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ftcdlib:oai:escholarship.org:ark:/13030/qt9rs030g8 2024-01-14T10:09:51+01:00 Microbial functional diversity covaries with permafrost thaw‐induced environmental heterogeneity in tundra soil Yuan, Mengting M Zhang, Jin Xue, Kai Wu, Liyou Deng, Ye Deng, Jie Hale, Lauren Zhou, Xishu He, Zhili Yang, Yunfeng Van Nostrand, Joy D Schuur, Edward AG Konstantinidis, Konstantinos T Penton, Christopher R Cole, James R Tiedje, James M Luo, Yiqi Zhou, Jizhong 297 - 307 2018-01-01 application/pdf https://escholarship.org/uc/item/9rs030g8 unknown eScholarship, University of California qt9rs030g8 https://escholarship.org/uc/item/9rs030g8 public Global Change Biology, vol 24, iss 1 Microbiology Biological Sciences Ecology Genetics Life Below Water Alaska Carbon Climate Change Fungi Permafrost Soil Microbiology Temperature Tundra functional gene array GEOCHIP permafrost thaw soil microbial functional diversity tussock tundra Environmental Sciences Earth sciences article 2018 ftcdlib 2023-12-18T19:08:31Z Permafrost soil in high latitude tundra is one of the largest terrestrial carbon (C) stocks and is highly sensitive to climate warming. Understanding microbial responses to warming-induced environmental changes is critical to evaluating their influences on soil biogeochemical cycles. In this study, a functional gene array (i.e., geochip 4.2) was used to analyze the functional capacities of soil microbial communities collected from a naturally degrading permafrost region in Central Alaska. Varied thaw history was reported to be the main driver of soil and plant differences across a gradient of minimally, moderately, and extensively thawed sites. Compared with the minimally thawed site, the number of detected functional gene probes across the 15-65cm depth profile at the moderately and extensively thawed sites decreased by 25% and 5%, while the community functional gene β-diversity increased by 34% and 45%, respectively, revealing decreased functional gene richness but increased community heterogeneity along the thaw progression. Particularly, the moderately thawed site contained microbial communities with the highest abundances of many genes involved in prokaryotic C degradation, ammonification, and nitrification processes, but lower abundances of fungal C decomposition and anaerobic-related genes. Significant correlations were observed between functional gene abundance and vascular plant primary productivity, suggesting that plant growth and species composition could be co-evolving traits together with microbial community composition. Altogether, this study reveals the complex responses of microbial functional potentials to thaw-related soil and plant changes and provides information on potential microbially mediated biogeochemical cycles in tundra ecosystems. Article in Journal/Newspaper permafrost Tundra Alaska University of California: eScholarship |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Microbiology Biological Sciences Ecology Genetics Life Below Water Alaska Carbon Climate Change Fungi Permafrost Soil Microbiology Temperature Tundra functional gene array GEOCHIP permafrost thaw soil microbial functional diversity tussock tundra Environmental Sciences Earth sciences |
spellingShingle |
Microbiology Biological Sciences Ecology Genetics Life Below Water Alaska Carbon Climate Change Fungi Permafrost Soil Microbiology Temperature Tundra functional gene array GEOCHIP permafrost thaw soil microbial functional diversity tussock tundra Environmental Sciences Earth sciences Yuan, Mengting M Zhang, Jin Xue, Kai Wu, Liyou Deng, Ye Deng, Jie Hale, Lauren Zhou, Xishu He, Zhili Yang, Yunfeng Van Nostrand, Joy D Schuur, Edward AG Konstantinidis, Konstantinos T Penton, Christopher R Cole, James R Tiedje, James M Luo, Yiqi Zhou, Jizhong Microbial functional diversity covaries with permafrost thaw‐induced environmental heterogeneity in tundra soil |
topic_facet |
Microbiology Biological Sciences Ecology Genetics Life Below Water Alaska Carbon Climate Change Fungi Permafrost Soil Microbiology Temperature Tundra functional gene array GEOCHIP permafrost thaw soil microbial functional diversity tussock tundra Environmental Sciences Earth sciences |
description |
Permafrost soil in high latitude tundra is one of the largest terrestrial carbon (C) stocks and is highly sensitive to climate warming. Understanding microbial responses to warming-induced environmental changes is critical to evaluating their influences on soil biogeochemical cycles. In this study, a functional gene array (i.e., geochip 4.2) was used to analyze the functional capacities of soil microbial communities collected from a naturally degrading permafrost region in Central Alaska. Varied thaw history was reported to be the main driver of soil and plant differences across a gradient of minimally, moderately, and extensively thawed sites. Compared with the minimally thawed site, the number of detected functional gene probes across the 15-65cm depth profile at the moderately and extensively thawed sites decreased by 25% and 5%, while the community functional gene β-diversity increased by 34% and 45%, respectively, revealing decreased functional gene richness but increased community heterogeneity along the thaw progression. Particularly, the moderately thawed site contained microbial communities with the highest abundances of many genes involved in prokaryotic C degradation, ammonification, and nitrification processes, but lower abundances of fungal C decomposition and anaerobic-related genes. Significant correlations were observed between functional gene abundance and vascular plant primary productivity, suggesting that plant growth and species composition could be co-evolving traits together with microbial community composition. Altogether, this study reveals the complex responses of microbial functional potentials to thaw-related soil and plant changes and provides information on potential microbially mediated biogeochemical cycles in tundra ecosystems. |
format |
Article in Journal/Newspaper |
author |
Yuan, Mengting M Zhang, Jin Xue, Kai Wu, Liyou Deng, Ye Deng, Jie Hale, Lauren Zhou, Xishu He, Zhili Yang, Yunfeng Van Nostrand, Joy D Schuur, Edward AG Konstantinidis, Konstantinos T Penton, Christopher R Cole, James R Tiedje, James M Luo, Yiqi Zhou, Jizhong |
author_facet |
Yuan, Mengting M Zhang, Jin Xue, Kai Wu, Liyou Deng, Ye Deng, Jie Hale, Lauren Zhou, Xishu He, Zhili Yang, Yunfeng Van Nostrand, Joy D Schuur, Edward AG Konstantinidis, Konstantinos T Penton, Christopher R Cole, James R Tiedje, James M Luo, Yiqi Zhou, Jizhong |
author_sort |
Yuan, Mengting M |
title |
Microbial functional diversity covaries with permafrost thaw‐induced environmental heterogeneity in tundra soil |
title_short |
Microbial functional diversity covaries with permafrost thaw‐induced environmental heterogeneity in tundra soil |
title_full |
Microbial functional diversity covaries with permafrost thaw‐induced environmental heterogeneity in tundra soil |
title_fullStr |
Microbial functional diversity covaries with permafrost thaw‐induced environmental heterogeneity in tundra soil |
title_full_unstemmed |
Microbial functional diversity covaries with permafrost thaw‐induced environmental heterogeneity in tundra soil |
title_sort |
microbial functional diversity covaries with permafrost thaw‐induced environmental heterogeneity in tundra soil |
publisher |
eScholarship, University of California |
publishDate |
2018 |
url |
https://escholarship.org/uc/item/9rs030g8 |
op_coverage |
297 - 307 |
genre |
permafrost Tundra Alaska |
genre_facet |
permafrost Tundra Alaska |
op_source |
Global Change Biology, vol 24, iss 1 |
op_relation |
qt9rs030g8 https://escholarship.org/uc/item/9rs030g8 |
op_rights |
public |
_version_ |
1788064426635558912 |