Electrobiocorrosion by microbes without outer-surface cytochromes.

ABSTRACT: Anaerobic microbial corrosion of iron-containing metals causes extensive economic damage. Some microbes are capable of direct metal-to-microbe electron transfer (electrobiocorrosion), but the prevalence of electrobiocorrosion among diverse methanogens and acetogens is poorly understood because of a lack of tools for their genetic manipulation. Previous studies have suggested that respiration with 316L  stainless steel as the electron donor is indicative of electrobiocorrosion, because, unlike pure Fe⁰, 316L  stainless steel does not abiotically generate H₂ as an intermediary electron carrier. Here, we report that all of the methanogens (Methanosarcina vacuolata, Methanothrix soehngenii, and Methanobacterium strain IM1) and acetogens (Sporomusa ovata</

SUBMITTER: Holmes DE 

PROVIDER: S-EPMC11139208 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature