Genome of Methanoregula boonei 6A8 reveals adaptations to oligotrophic peatland environments

TitleGenome of Methanoregula boonei 6A8 reveals adaptations to oligotrophic peatland environments
Publication TypeJournal Article
Year of Publication2015
AuthorsBrauer S., Cadillo-Quiroz H., Kyrpides N., Woyke T., Goodwin L., Detter C., Podell S, Yavitt J.B, Zinder S.H
JournalMicrobiology-Sgm
Volume161
Pagination1572-1581
Date Published2015/08
Type of ArticleArticle
ISBN Number1350-0872
Accession NumberWOS:000363005400004
Keywordsacidiphilic methanogen; amino-acid substitutions; archaea; atp synthesis; escherichia-coli; hydrogenotrophic methanogen; kdp-atpase; kdpfabc complex; methanogenic; minerotrophic fen; new-york-state
Abstract

Analysis of the genome sequence of Methanoregula boonei strain 6A8, an acidophilic methanogen isolated from an ombrotrophic (rain-fed) peat bog, has revealed unique features that likely allow it to survive in acidic, nutrient-poor conditions. First, M. boonei is predicted to generate ATP using protons that are abundant in peat, rather than sodium ions that are scarce, and the sequence of a membrane-bound methyltransferase, believed to pump Na+ in all methanogens, shows differences in key amino acid residues. Further, perhaps reflecting the hypokalennic status of many peat bogs, M. boonei demonstrates redundancy in the predicted potassium uptake genes trk, kdp and kup, some of which may have been horizontally transferred to methanogens from bacteria, possibly Geobacter spp. Overall, the putative functions of the potassium uptake, ATPase and methyltransferase genes may, at least in part, explain the cosmopolitan success of group E1/E2 and related methanogenic archaea in acidic peat bogs.

DOI10.1099/mic.0.000117
Short TitleMicrobiology-(UK)
Student Publication: 
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