Microbial functional diversity covaries with permafrost thaw-induced environmental heterogeneity in tundra soil
Abstract
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 15-65 cm 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 plantmore »
- Authors:
-
- Univ. of Oklahoma, Norman, OK (United States)
- Univ. of Oklahoma, Norman, OK (United States); Univ. of Chinese Academy of Sciences, Beijing (China)
- Univ. of Oklahoma, Norman, OK (United States); Chinese Academy of Sciences (CAS), Beijing (China)
- Univ. of Oklahoma, Norman, OK (United States); East China Normal Univ. (ECNU), Shanghai (China)
- Univ. of Oklahoma, Norman, OK (United States); Central South Univ., Changsha (China)
- Tsinghua Univ., Beijing (China)
- Northern Arizona Univ., Flagstaff, AZ (United States)
- Georgia Inst. of Technology, Atlanta, GA (United States)
- Arizona State Univ., Mesa, AZ (United States)
- Michigan State Univ., East Lansing, MI (United States)
- Univ. of Oklahoma, Norman, OK (United States); Tsinghua Univ., Beijing (China); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- National Science Foundation (NSF); USDOE Office of Science (SC), Biological and Environmental Research (BER)
- OSTI Identifier:
- 1561880
- Alternate Identifier(s):
- OSTI ID: 1415048
- Grant/Contract Number:
- AC02-05CH11231; SC0004601; SC0010715; SC0006982; SC0014085
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Global Change Biology
- Additional Journal Information:
- Journal Volume: 24; Journal Issue: 1; Journal ID: ISSN 1354-1013
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 59 BASIC BIOLOGICAL SCIENCES; functional gene array; GEOCHIP; permafrost thaw; soil microbial functional diversity; tussock; tundra
Citation Formats
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 A. G., Konstantinidis, Konstantinos T., Penton, Christopher R., Cole, James R., Tiedje, James M., Luo, Yiqi, and Zhou, Jizhong. Microbial functional diversity covaries with permafrost thaw-induced environmental heterogeneity in tundra soil. United States: N. p., 2017.
Web. doi:10.1111/gcb.13820.
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 A. G., 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. United States. https://doi.org/10.1111/gcb.13820
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 A. G., Konstantinidis, Konstantinos T., Penton, Christopher R., Cole, James R., Tiedje, James M., Luo, Yiqi, and Zhou, Jizhong. Mon .
"Microbial functional diversity covaries with permafrost thaw-induced environmental heterogeneity in tundra soil". United States. https://doi.org/10.1111/gcb.13820. https://www.osti.gov/servlets/purl/1561880.
@article{osti_1561880,
title = {Microbial functional diversity covaries with permafrost thaw-induced environmental heterogeneity in tundra soil},
author = {Yuan, Mengting M. and Zhang, Jin and Xue, Kai and Wu, Liyou and Deng, Ye and Deng, Jie and Hale, Lauren and Zhou, Xishu and He, Zhili and Yang, Yunfeng and Van Nostrand, Joy D. and Schuur, Edward A. G. and Konstantinidis, Konstantinos T. and Penton, Christopher R. and Cole, James R. and Tiedje, James M. and Luo, Yiqi and Zhou, Jizhong},
abstractNote = {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 15-65 cm 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. Finally, 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.},
doi = {10.1111/gcb.13820},
journal = {Global Change Biology},
number = 1,
volume = 24,
place = {United States},
year = {Mon Jul 17 00:00:00 EDT 2017},
month = {Mon Jul 17 00:00:00 EDT 2017}
}
Web of Science
Figures / Tables:
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