Global patterns in the growth potential of soil bacterial communities.

Autor: Osburn ED; Department of Plant and Soil Sciences, University of Kentucky, Lexington, KY, USA. e.osburn@uky.edu.; Department of Soil and Water Systems, University of Idaho, Moscow, ID, USA. e.osburn@uky.edu., McBride SG; Department of Biology, Radford University, Radford, VA, USA., Bahram M; Department of Ecology, Swedish University of Agricultural Sciences, Uppsala, Sweden.; Institute of Ecology and Earth Sciences, University of Tartu, Tartu, Estonia.; Department of Agroecology, Aarhus University, Slagelse, Denmark., Strickland MS; Department of Soil and Water Systems, University of Idaho, Moscow, ID, USA.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2024 Aug 11; Vol. 15 (1), pp. 6881. Date of Electronic Publication: 2024 Aug 11.
DOI: 10.1038/s41467-024-50382-1
Abstrakt: Despite the growing catalogue of studies detailing the taxonomic and functional composition of soil bacterial communities, the life history traits of those communities remain largely unknown. This study analyzes a global dataset of soil metagenomes to explore environmental drivers of growth potential, a fundamental aspect of bacterial life history. We find that growth potential, estimated from codon usage statistics, was highest in forested biomes and lowest in arid latitudes. This indicates that bacterial productivity generally reflects ecosystem productivity globally. Accordingly, the strongest environmental predictors of growth potential were productivity indicators, such as distance to the equator, and soil properties that vary along productivity gradients, such as pH and carbon to nitrogen ratios. We also observe that growth potential was negatively correlated with the relative abundances of genes involved in carbohydrate metabolism, demonstrating tradeoffs between growth and resource acquisition in soil bacteria. Overall, we identify macroecological patterns in bacterial growth potential and link growth rates to soil carbon cycling.
(© 2024. The Author(s).)
Databáze: MEDLINE
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