Differential incorporation of one-carbon substrates among microbial populations identified by stable isotope probing from the estuary to South China Sea.

ABSTRACT: Methanol (MOH) and monomethylamine (MMA) are two typical one-carbon (C₁) compounds found in natural environments. They play an important role in marine and atmospheric chemistry, cloud formation, and global climate. The main biological sink of MOH and MMA is rapid consumption by marine microbes. Here, field-based time-series incubations with supplemental ¹³C-labelled MOH and MMA and isotope ratio analyses were performed. A substantial difference in the MOH and MMA incorporation rates and bacterial taxa were observed between the South China Sea (SCS) and the Pearl River estuary. C₁ substrates were assimilated more quickly in the estuary than the SCS shelf where MOH and MMA had similar bio-availability. However, microbial responses to MMA may be faster than t

SUBMITTER: Deng W 

PROVIDER: S-EPMC6194082 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature