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Title: The Biogeographic Pattern of Microbial Functional Genes along an Altitudinal Gradient of the Tibetan Pasture

Abstract

As the highest place of the world, the Tibetan plateau is a fragile ecosystem. Given the importance of microbial communities in driving soil nutrient cycling, it is of interest to document the microbial biogeographic pattern here. We adopted a microarray-based tool named GeoChip 4.0 to investigate grassland microbial functional genes along an elevation gradient from 3200 to 3800 m above sea level open to free grazing by local herdsmen and wild animals. Interestingly, microbial functional diversities increase with elevation, so does the relative abundances of genes associated with carbon degradation, nitrogen cycling, methane production, cold shock and oxygen limitation. The range of Shannon diversities (10.27-10.58) showed considerably smaller variation than what was previously observed at ungrazed sites nearby (9.95-10.65), suggesting the important role of livestock grazing on microbial diversities. Closer examination showed that the dissimilarity of microbial community at our study sites increased with elevations, revealing an elevation-decay relationship of microbial functional genes. Both microbial functional diversity and the number of unique genes increased with elevations. Furthermore, we detected a tight linkage of greenhouse gas (CO 2) and relative abundances of carbon cycling genes. Our biogeographic study provides insights on microbial functional diversity and soil biogeochemical cycling in Tibetan pastures.

Authors:
 [1];  [1];  [2];  [1];  [3];  [1];  [4];  [5];  [6];  [7];  [8];  [1]
  1. Tsinghua Univ., Beijing (China)
  2. Chinese Academy of Sciences (CAS), Beijing (China); CAS Center for Excellence in Tibetan Plateau Earth Science, Beijing (China)
  3. Tsinghua Univ., Beijing (China); Univ. of Houston, TX (United States)
  4. Chinese Academy of Sciences (CAS), Xining (China)
  5. Chinese Academy of Sciences (CAS), Chengdu (China)
  6. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  7. China Agricultural Univ., Beijing (China)
  8. Tsinghua Univ., Beijing (China); Univ. of Oklahoma, Norman, OK (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1567071
DOE Contract Number:  
AC02-05CH11231
Resource Type:
Journal Article
Journal Name:
Frontiers in Microbiology
Additional Journal Information:
Journal Volume: 8; Journal Issue: JUN; Journal ID: ISSN 1664-302X
Publisher:
Frontiers Research Foundation
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES

Citation Formats

Qi, Qi, Zhao, Mengxin, Wang, Shiping, Ma, Xingyu, Wang, Yuxuan, Gao, Ying, Lin, Qiaoyan, Li, Xiangzhen, Gu, Baohua, Li, Guoxue, Zhou, Jizhong, and Yang, Yunfeng. The Biogeographic Pattern of Microbial Functional Genes along an Altitudinal Gradient of the Tibetan Pasture. United States: N. p., 2017. Web. doi:10.3389/fmicb.2017.00976.
Qi, Qi, Zhao, Mengxin, Wang, Shiping, Ma, Xingyu, Wang, Yuxuan, Gao, Ying, Lin, Qiaoyan, Li, Xiangzhen, Gu, Baohua, Li, Guoxue, Zhou, Jizhong, & Yang, Yunfeng. The Biogeographic Pattern of Microbial Functional Genes along an Altitudinal Gradient of the Tibetan Pasture. United States. doi:10.3389/fmicb.2017.00976.
Qi, Qi, Zhao, Mengxin, Wang, Shiping, Ma, Xingyu, Wang, Yuxuan, Gao, Ying, Lin, Qiaoyan, Li, Xiangzhen, Gu, Baohua, Li, Guoxue, Zhou, Jizhong, and Yang, Yunfeng. Tue . "The Biogeographic Pattern of Microbial Functional Genes along an Altitudinal Gradient of the Tibetan Pasture". United States. doi:10.3389/fmicb.2017.00976. https://www.osti.gov/servlets/purl/1567071.
@article{osti_1567071,
title = {The Biogeographic Pattern of Microbial Functional Genes along an Altitudinal Gradient of the Tibetan Pasture},
author = {Qi, Qi and Zhao, Mengxin and Wang, Shiping and Ma, Xingyu and Wang, Yuxuan and Gao, Ying and Lin, Qiaoyan and Li, Xiangzhen and Gu, Baohua and Li, Guoxue and Zhou, Jizhong and Yang, Yunfeng},
abstractNote = {As the highest place of the world, the Tibetan plateau is a fragile ecosystem. Given the importance of microbial communities in driving soil nutrient cycling, it is of interest to document the microbial biogeographic pattern here. We adopted a microarray-based tool named GeoChip 4.0 to investigate grassland microbial functional genes along an elevation gradient from 3200 to 3800 m above sea level open to free grazing by local herdsmen and wild animals. Interestingly, microbial functional diversities increase with elevation, so does the relative abundances of genes associated with carbon degradation, nitrogen cycling, methane production, cold shock and oxygen limitation. The range of Shannon diversities (10.27-10.58) showed considerably smaller variation than what was previously observed at ungrazed sites nearby (9.95-10.65), suggesting the important role of livestock grazing on microbial diversities. Closer examination showed that the dissimilarity of microbial community at our study sites increased with elevations, revealing an elevation-decay relationship of microbial functional genes. Both microbial functional diversity and the number of unique genes increased with elevations. Furthermore, we detected a tight linkage of greenhouse gas (CO2) and relative abundances of carbon cycling genes. Our biogeographic study provides insights on microbial functional diversity and soil biogeochemical cycling in Tibetan pastures.},
doi = {10.3389/fmicb.2017.00976},
journal = {Frontiers in Microbiology},
issn = {1664-302X},
number = JUN,
volume = 8,
place = {United States},
year = {2017},
month = {6}
}

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    Works referencing / citing this record:

    Hierarchical drivers of soil microbial community structure variability in “Monte Perdido” Massif (Central Pyrenees)
    journal, June 2019