Life history strategies of soil bacterial communities across global terrestrial biomes

Abstract

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. Our findings provide a trait-based framework to compare life history strategies of soil bacteria.Analysis of metagenomes from across the globe reveals the spectrum of soil microbial functional diversity based on community aggregated traits.

Published in

Nature microbiology
2023, volume: 8, number: 11, pages: 2093-2102
Publisher: NATURE PORTFOLIO

SLU Authors

• Bahram, Mohammad

  • Department of Ecology, Swedish University of Agricultural Sciences
    
  • University of Tartu

Associated SLU-program

SLU Plant Protection Network

UKÄ Subject classification

Microbiology

Publication identifier

• DOI: https://doi.org/10.1038/s41564-023-01465-0

Permanent link to this page (URI)

https://res.slu.se/id/publ/126568