Resource partitioning and amino acid assimilation in a terrestrial geothermal spring.

ABSTRACT: High-temperature geothermal springs host simplified microbial communities; however, the activities of individual microorganisms and their roles in the carbon cycle in nature are not well understood. Here, quantitative stable isotope probing (qSIP) was used to track the assimilation of ¹³C-acetate and ¹³C-aspartate into DNA in 74 °C sediments in Gongxiaoshe Hot Spring, Tengchong, China. This revealed a community-wide preference for aspartate and a tight coupling between aspartate incorporation into DNA and the proliferation of aspartate utilizers during labeling. Both ¹³C incorporation into DNA and changes in the abundance of taxa during incubations indicated strong resource partitioning and a significant phylogenetic signal for aspartate incorporation. Of t

SUBMITTER: Lai D 

PROVIDER: S-EPMC10579274 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature