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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 (CO2) 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). Key Lab. of Adaptation and Evolution of Plateau Biota, Northwest Inst. of Plateau Biology
  5. Chinese Academy of Sciences (CAS), Chengdu (China). Key Lab. of Environmental and Applied Microbiology, Environmental Microbiology Key Lab. of Sichuan Province, Chengdu Inst. of Biology
  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). Inst. for Environmental Genomics and Department of Microbiology and Plant Biology; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC); National Science Foundation of China; Chinese Academy of Sciences
OSTI Identifier:
1567071
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
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; microbial biogeography; soil microbial community; microbial functional potential; alpine grassland; altitudinal gradient

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. https://doi.org/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. https://doi.org/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},
number = JUN,
volume = 8,
place = {United States},
year = {Tue Jun 13 00:00:00 EDT 2017},
month = {Tue Jun 13 00:00:00 EDT 2017}
}

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Figures / Tables:

FIGURE 1 FIGURE 1: Elevation-decay relationship for whole microbial community (z-value = 0.0093, t = –209.6, n = 999, P < 0.001). Similarity represents Sorensen’s similarity index.

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Spatial scaling of functional gene diversity across various microbial taxa
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Plant diversity predicts beta but not alpha diversity of soil microbes across grasslands worldwide
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Responses of the functional structure of soil microbial community to livestock grazing in the Tibetan alpine grassland
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Effects of grazing on plant community structure and aboveground net primary production of semiarid boreal steppe of northern Mongolia
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Diurnal, seasonal and annual variation in net ecosystem CO 2 exchange of an alpine shrubland on Qinghai-Tibetan plateau
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GeoChip-based analysis of functional microbial communities during the reoxidation of a bioreduced uranium-contaminated aquifer
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Evolutionary ecology of plant-microbe interactions: soil microbial structure alters selection on plant traits
journal, June 2011


Response of Polygonum viviparum Species and Community Level to Long-term Livestock Grazing in Alpine Shrub Meadow in Qinghai-Tibet Plateau
journal, June 2008


Ecological Linkages Between Aboveground and Belowground Biota
journal, June 2004


The Microbial Engines That Drive Earth's Biogeochemical Cycles
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Microbial Biogeography: From Taxonomy to Traits
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Molecular ecological network analyses
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Elevational Patterns in Archaeal Diversity on Mt. Fuji
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Microbes do not follow the elevational diversity patterns of plants and animals
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  • Fierer, Noah; McCain, Christy M.; Meir, Patrick
  • Ecology, Vol. 92, Issue 4
  • DOI: 10.1890/10-1170.1

Variations of Soil Microbial Community Structures Beneath Broadleaved Forest Trees in Temperate and Subtropical Climate Zones
journal, February 2017


Works referencing / citing this record:

Climate mediates continental scale patterns of stream microbial functional diversity
journal, June 2020


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


Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.