Dimethylsulfoniopropionate Biosynthetic Bacteria in the Subseafloor Sediments of the South China Sea.

ABSTRACT: Dimethylsulfoniopropionate (DMSP) is one of Earth's most abundant organosulfur molecules, and bacteria in marine sediments have been considered significant producers. However, the vertical profiles of DMSP content and DMSP-producing bacteria in subseafloor sediment have not been described. Here, we used culture-dependent and -independent methods to investigate microbial DMSP production and cycling potential in South China Sea (SCS) sediment. The DMSP content of SCS sediment decreased from 11.25 to 20.90 nmol g^-1 in the surface to 0.56-2.08 nmol g^-1 in the bottom layers of 8-m-deep subseafloor sediment cores (n = 10). Very few eukaryotic plastid sequences were detected in the sediment, supporting bacteria and not algae as important sediment DMSP producers. Known

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC8543147 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature