Abacterial strain, designated MMFC1T, was isolated from a methanol-fed microbial fuel cell that had been inoculated with sludge obtained from a wastewater-treatmentfacility in a chemical plant. The strain grows by fermenting methanol to produce acetate under anaerobic conditions, while homoacetogenic growth is not observed. MMFC1T also grows on pyruvate and lactate but not on sugars and other organic acids. Cells are curved rods and motile, have peritrichous flagella, and form endospores. The genome sequence of strain MMFC1T supports the physiological data. Phylogenetic analysis based on the 16S rRNA gene sequence shows that strain MMFC1T is affiliated with the family Sporomusaceae, while the closest relative is Sporomusa ovata with nucleotide-sequencesimilarity of 93.5 %. Major fatty acids are iso-C13 : 0 3-OH, C16 : 1ω9 and iso-C17 : 0. On the basis of its physiological, genomic and phylogenetic features, a novel genus and species are proposed to accommodate strain MMFC1T, with the name Methylomusa anaerophila gen. nov., sp. nov. The type strain of Methylomusa anaerophila is MMFC1T (=JCM 31821T = KCTC 15592T).
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