Microbial drivers of DMSO reduction and DMS-dependent methanogenesis in saltmarsh sediments.

ABSTRACT: Saltmarshes are highly productive environments, exhibiting high abundances of organosulfur compounds. Dimethylsulfoniopropionate (DMSP) is produced in large quantities by algae, plants, and bacteria and is a potential precursor for dimethylsulfoxide (DMSO) and dimethylsulfide (DMS). DMSO serves as electron acceptor for anaerobic respiration leading to DMS formation, which is either emitted or can be degraded by methylotrophic prokaryotes. Major products of these reactions are trace gases with positive (CO₂, CH₄) or negative (DMS) radiative forcing with contrasting effects on the global climate. Here, we investigated organic sulfur cycling in saltmarsh sediments and followed DMSO reduction in anoxic batch experiments. Compared to previous measurements from marine water

SUBMITTER: Tebbe DA 

PROVIDER: S-EPMC10689795 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature