Responses of Coastal Marine Microbiomes Exposed to Anthropogenic Dissolved Organic Carbon.

ABSTRACT: Coastal seawaters receive thousands of organic pollutants. However, we have little understanding of the response of microbiomes to this pool of anthropogenic dissolved organic carbon (ADOC). In this study, coastal microbial communities were challenged with ADOC at environmentally relevant concentrations. Experiments were performed at two Mediterranean sites with different impact by pollutants and nutrients: off the Barcelona harbor ("BCN"), and at the Blanes Bay ("BL"). ADOC additions stimulated prokaryotic leucine incorporation rates at both sites, indicating the use of ADOC as growth substrate. The percentage of "membrane-compromised" cells increased with increasing ADOC, indicating concurrent toxic effects of ADOC. Metagenomic analysis of the BCN community challenged with ADOC showed a

SUBMITTER: Cerro-Galvez E 

PROVIDER: S-EPMC8491159 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature