Vitamin B1 in marine sediments: pore water concentration gradient drives benthic flux with potential biological implications.

ABSTRACT: Vitamin B1, or thiamin, can limit primary productivity in marine environments, however the major marine environmental sources of this essential coenzyme remain largely unknown. Vitamin B1 can only be produced by organisms that possess its complete synthesis pathway, while other organisms meet their cellular B1 quota by scavenging the coenzyme from exogenous sources. Due to high bacterial cell density and diversity, marine sediments could represent some of the highest concentrations of putative B1 producers, yet these environments have received little attention as a possible source of B1 to the overlying water column. Here we report the first dissolved pore water profiles of B1 measured in cores collected in two consecutive years from Santa Monica Basin, CA. Vitamin B1 concentrations were f

SUBMITTER: Monteverde DR 

PROVIDER: S-EPMC4428219 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature