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Title: Life history strategies of soil bacterial communities across global terrestrial biomes

Journal Article · · Nature Microbiology
ORCiD logo [1]; ORCiD logo [2];  [3];  [4]; ORCiD logo [2];  [2]; ORCiD logo [2]
  1. Univ. of California, Irvine, CA (United States); Montpellier Univ. 2 (France). UMR Eco&Sols; French National Research Institute for Agriculture, Food and Environment (INRAE), Champenoux (France); French Agricultural Research Centre for International Development (CIRAD); Research and Development Institute (IRD), Montpellier (France)
  2. Univ. of California, Irvine, CA (United States)
  3. Swedish Univ. of Agricultural Sciences, Uppsala (Sweden); University of Tartu (Estonia)
  4. Quadram Institute, Norwich (United Kingdom); Earlham Institute, Norwich (United Kingdom)

The life history strategies of soil microbes determine their metabolic potential and their response to environmental changes. Yet these strategies remain poorly understood. Here we use shotgun metagenomes from terrestrial biomes to characterize overarching covariations of the genomic traits that capture dominant life history strategies in bacterial communities. The emerging patterns show a triangle of life history strategies shaped by two trait dimensions, supporting previous theoretical and isolate-based studies. The first dimension ranges from streamlined genomes with simple metabolisms to larger genomes and expanded metabolic capacities. As metabolic capacities expand, bacterial communities increasingly differentiate along a second dimension that reflects a trade-off between increasing capacities for environmental responsiveness or for nutrient recycling. Random forest analyses show that soil pH, C:N ratio and precipitation patterns together drive the dominant life history strategy of soil bacterial communities and their biogeographic distribution. Finally, our findings provide a trait-based framework to compare life history strategies of soil bacteria.

Research Organization:
Univ. of California, Irvine, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER). Biological Systems Science (BSS)
Grant/Contract Number:
SC0020382; SC0016410
OSTI ID:
2263428
Journal Information:
Nature Microbiology, Vol. 8, Issue 11; ISSN 2058-5276
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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