Flexibility of syntrophic enzyme systems in Desulfovibrio species ensures their adaptation capability to environmental changes.

ABSTRACT: The mineralization of organic matter in anoxic environments relies on the cooperative activities of hydrogen producers and consumers obligately linked by interspecies metabolite exchange in syntrophic consortia that may include sulfate reducing species such as Desulfovibrio. To evaluate the metabolic flexibility of syntrophic Desulfovibrio to adapt to naturally fluctuating methanogenic environments, we studied Desulfovibrio alaskensis strain G20 grown in chemostats under respiratory and syntrophic conditions with alternative methanogenic partners, Methanococcus maripaludis and Methanospirillum hungatei, at different growth rates. Comparative whole-genome transcriptional analyses, complemented by G20 mutant strain growth experiments and physiological data, revealed a significant influence o

SUBMITTER: Meyer B 

PROVIDER: S-EPMC3807489 | biostudies-literature | 2013 Nov

REPOSITORIES: biostudies-literature