First Observation of an Acetate Switch in a Methanogenic Autotroph (Methanococcus maripaludis S2).

ABSTRACT: The transition from acetate production by a microorganism in its early growth phase to acetate re-uptake in its late growth phase has been termed acetate switch. It has been observed in several heterotrophic prokaryotes, but not in an autotroph. Furthermore, all reports hitherto have involved the tricarboxylic acid cycle. This study reports the first observation of acetate switch in a methanogenic autotroph Methanococcus maripaludis S2, which uses the Wolfe cycle for its anaerobic respiration. When grown in minimal medium with carbon dioxide as the sole carbon source, and either ammonium or dinitrogen as the sole nitrogen source, M. maripaludis S2 dissimilated acetate in the early growth phase and assimilated it back in the late growth phase. The acetate switch was more prono

SUBMITTER: Vo CH 

PROVIDER: S-EPMC7416134 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature