A Single Bacterium Capable of Oxidation and Reduction of Iron at Circumneutral pH.

ABSTRACT: Fe(II)-oxidizing microorganisms and Fe(III)-reducing microorganisms, which drive the biogeochemical Fe cycle on the Earth's surface, are phylogenetically and ecologically diverse. However, no single organism capable of aerobic Fe(II) oxidation and anaerobic Fe(III) reduction at circumneutral pH have been reported so far. Here, we report a novel neutrophilic Fe(II)-oxidizing Rhodoferax bacterium, strain MIZ03, isolated from an iron-rich wetland in Japan. Our cultivation experiments demonstrate that MIZ03 represents a much more versatile metabolism for energy acquisition than previously recognized in the genus Rhodoferax. MIZ03 can grow chemolithoautotrophically at circumneutral pH by oxidation of Fe(II), H₂, or thiosulfate as the sole electron donor under (micro)aer

SUBMITTER: Kato S 

PROVIDER: S-EPMC8552755 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature