The reduction of environmentally abundant iron oxides by the methanogen Methanosarcina barkeri.

ABSTRACT: Microbial dissimilatory iron reduction is a fundamental respiratory process that began early in evolution and is performed in diverse habitats including aquatic anoxic sediments. In many of these sediments microbial iron reduction is not only observed in its classical upper zone, but also in the methane production zone, where low-reactive iron oxide minerals are present. Previous studies in aquatic sediments have shown the potential role of the archaeal methanogen Methanosarcinales in this reduction process, and their use of methanophenazines was suggested as an advantage in reducing iron over other iron-reducing bacteria. Here we tested the capability of the methanogenic archaeon Methanosarcina barkeri to reduce three naturally abundant iron oxides in the methanogenic zone: the low

SUBMITTER: Eliani-Russak E 

PROVIDER: S-EPMC10399698 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature