Nitrogen Fixation Activity and Genome Analysis of a Moderately Haloalkaliphilic Anoxygenic Phototrophic Bacterium Rhodovulum tesquicola.

ABSTRACT: The genome of the moderately haloalkaliphilic diazotrophic anoxygenic phototrophic bacterium Rhodovulum tesquicola A-36s^T isolated from an alkaline lake was analyzed and compared to the genomes of the closest species Rhodovulum steppense A-20s^T and Rhodovulum strictum DSM 11289^T. The genomic features of three organisms are quite similar, reflecting their ecological and physiological role of facultative photoheterotrophs. Nevertheless, the nitrogenase activity of the pure cultures of the studied bacteria differed significantly: the highest rate (4066 nmoles C₂H₂/mg of dry weight per hour) was demonstrated by Rhodovulum strictum while the rates in Rhodovulum tesquicola and Rhodovulum steppense we

SUBMITTER: Komova AV 

PROVIDER: S-EPMC9412634 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature