Taxon-specific microbial growth and mortality patterns reveal distinct temporal population responses to rewetting in a California grassland soil.

ABSTRACT: Microbial activity increases after rewetting dry soil, resulting in a pulse of carbon mineralization and nutrient availability. The biogeochemical responses to wet-up are reasonably well understood and known to be microbially mediated. Yet, the population level dynamics, and the resulting changes in microbial community patterns, are not well understood as ecological phenomena. Here, we used sequencing of 16S rRNA genes coupled with heavy water (H₂¹⁸O) DNA quantitative stable isotope probing to estimate population-specific rates of growth and mortality in response to a simulated wet-up event in a California annual grassland soil. Bacterial growth and mortality responded rapidly to wet-up, within 3 h, and continued throughout the 168 h incubation, with patterns of seque

SUBMITTER: Blazewicz SJ 

PROVIDER: S-EPMC7242442 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature