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Scale-dependent effects of climate and geographic distance on bacterial diversity patterns across northern China's grasslands

Journal Article · · FEMS Microbiology Ecology (Online)
 [1];  [2];  [3];  [4];  [4];  [5];  [4]
  1. Chinese Academy of Sciences (CAS), Shenyang (China); Univ. of Chinese Academy of Sciences, Beijing (China); Univ. of Oklahoma, Norman, OK (United States)
  2. Univ. of Oklahoma, Norman, OK (United States)
  3. Chinese Academy of Sciences (CAS), Beijing (China)
  4. Chinese Academy of Sciences (CAS), Shenyang (China)
  5. Univ. of Oklahoma, Norman, OK (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Tsinghua Univ., Beijing (China)
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Patterns of variation in plant and animal diversity along precipitation gradients have been extensively studied, but much less is known about how and to what extent precipitation affects the biogeographic distribution of microbial diversity in arid areas across large spatial scales. Here we collected soils from 54 sites along a 3700 km transect covering a wide range of grassland ecosystems with distinct aridity gradients. We quantified the bacterial community diversity and the effects of climate, edaphic parameter and geographic distance on the bacterial community structure using high-throughput 16S rRNA gene sequencing. Of the 35 phyla detected, 6 were dominant: Actinobacteria, Acidobacteria, Alphaproteobacteria, Deltaproteobacteria, Bacteroidetes and Planctomycetes. Aridity was a major factor influencing bacterial diversity, community composition and taxon abundance. Although the pattern of bacterial species richness is markedly different from that of plant species richness, most soil bacteria were endemic to particular bioregions like macro-organisms. Community similarity significantly declined with environmental distance and geographic distance (r = -0.579 and -0.773, respectively). Geographic distance (historical contingencies) contributed more to bacterial community variation (36.02%) than combined environmental factors (24.06%). Finally, our results showed that geographic distance and climatic factors concurrently govern bacterial biogeographic patterns in arid and semi-arid grassland.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1579917
Journal Information:
FEMS Microbiology Ecology (Online), Journal Name: FEMS Microbiology Ecology (Online) Journal Issue: 12 Vol. 91; ISSN 1574-6941
Publisher:
Federation of European Microbiological SocietiesCopyright Statement
Country of Publication:
United States
Language:
English

Cited By (23)

Differentiations of determinants for the community compositions of bacteria, fungi, and nitrogen fixers in various steppes journal February 2019
Habitat filtering shapes the differential structure of microbial communities in the Xilingol grassland journal December 2019
Contrasting Biogeographic Patterns of Bacterial and Archaeal Diversity in the Top- and Subsoils of Temperate Grasslands journal October 2019
The effects of Rhodopseudomonas palustris PSB06 and CGA009 with different agricultural applications on rice growth and rhizosphere bacterial communities journal October 2019
Biogeographic Distribution Patterns of Bacteria in Typical Chinese Forest Soils journal July 2016
The Patterns and Drivers of Bacterial and Fungal β-Diversity in a Typical Dryland Ecosystem of Northwest China journal November 2017
Links between Soil Fungal Diversity and Plant and Soil Properties on the Loess Plateau journal November 2017
Resource Availability Drives Responses of Soil Microbial Communities to Short-term Precipitation and Nitrogen Addition in a Desert Shrubland journal February 2018
Stair-Step Pattern of Soil Bacterial Diversity Mainly Driven by pH and Vegetation Types Along the Elevational Gradients of Gongga Mountain, China journal March 2018
Soil Property and Plant Diversity Determine Bacterial Turnover and Network Interactions in a Typical Arid Inland River Basin, Northwest China journal November 2019
Effects of rhizoma peanut cultivars ( Arachis glabrata Benth.) on the soil bacterial diversity and predicted function in nitrogen fixation journal November 2019
Response and driving factors of soil microbial diversity related to global nitrogen addition journal October 2019
Environment Shapes the Intra-species Diversity of Bacillus subtilis Isolates journal November 2019
Soil bacterial community responses to revegetation of moving sand dune in semi-arid grassland journal May 2017
Habitat-specific patterns and drivers of bacterial β-diversity in China’s drylands journal March 2017
Soil bacterial quantification approaches coupling with relative abundances reflecting the changes of taxa journal July 2017
Long-range dispersal moved Francisella tularensis into Western Europe from the East journal December 2016
Dominant soil bacteria and their ecological attributes across the deserts in northern China journal August 2019
Higher precipitation strengthens the microbial interactions in semi-arid grassland soils journal January 2018
Distinct microbial communities in the active and permafrost layers on the Tibetan Plateau journal November 2017
Fungal community reveals less dispersal limitation and potentially more connected network than that of bacteria in bamboo forest soils journal December 2017
Effect of aridity and dune type on rhizosphere soil bacterial communities of Caragana microphylla in desert regions of northern China journal October 2019
Long-range dispersal moved Francisella tularensis into Western Europe from the East. text January 2016

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Related Subjects

59 BASIC BIOLOGICAL SCIENCES
Inner Mongolia
aridity
dispersal limitation
metagenomic sequencing
microbial biogeography
soil microbial ecology
spatial patterns