Six novel species of the genus Methanoculleus isolated from various environments in Taiwan

Int J Syst Evol Microbiol. 2024 Jul;74(7). doi: 10.1099/ijsem.0.006477.

Abstract

Taiwan is situated in the subtropical region and its geographical location and topographical features contribute to a rich ecological diversity and scenic landscapes. We investigated the diversity of methanogens in different environments of Taiwan using a culture-dependent method. This report presents the characterization and taxonomy of six hydrogenotrophic methanogens obtained from cold seep sediments (strain FWC-SCC1T and FWC-SCC3T), marine sediments (strain CWC-02T and YWC-01T), estuarine sediments (strain Afa-1T), and a hot spring well (strain Wushi-C6T) in Taiwan. The proposed names of the six novel species are Methanoculleus frigidifontis (type strain FWC-SCC1T=BCRC AR10056T=NBRC 113993T), Methanoculleus oceani (CWC-02T=BCRC AR10055T=NBRC 113992T), Methanoculleus methanifontis (FWC-SCC3T=BCRC AR10057T=NBRC 113994T), Methanoculleus nereidis (YWC-01T=BCRC AR10060T=NBRC 114597T), Methanoculleus formosensis (Afa-1T=BCRC AR10054T=NBRC 113995T), and Methanoculleus caldifontis (Wushi-06T=BCRC AR10059T= NBRC 114596T).

Keywords: Marine sediment; Methanoculleus; cold seep; hot spring; methane hydrate; methane seep.

MeSH terms

  • Base Composition
  • DNA, Archaeal* / genetics
  • Geologic Sediments* / microbiology
  • Hot Springs / microbiology
  • Methanomicrobiaceae / classification
  • Methanomicrobiaceae / genetics
  • Methanomicrobiaceae / isolation & purification
  • Phylogeny*
  • RNA, Ribosomal, 16S* / genetics
  • Sequence Analysis, DNA*
  • Taiwan

Substances

  • RNA, Ribosomal, 16S
  • DNA, Archaeal