Desulfovibrio magneticus sp. nov., a novel sulfate-reducing bacterium that produces intracellular single-domain-sized magnetite particles

Toshifumi Sakaguchi, Atsushi Arakaki, Tadashi Matsunaga

Research output: Contribution to journalArticle

96 Citations (Scopus)

Abstract

A novel type of dissimilatory sulfate-reducing bacterium, designated strain RS-1T, capable of producing intracellular magnetite particles (magnetosomes) was isolated from freshwater sulfide-rich sediments. Phylogenetic analysis based on 16S rDNA sequences revealed that RS-1T is a member of the genus Desulfovibrio. Its closest known relative is Desulfovibrio burkinensis (sequence similarity of 98.7%). Strain RS-1T contains desulfoviridin, c-type cytochromes and, unlike other Desulfovibrio spp., it possesses menaquinone MK-7(H2) instead of MK-6 or MK-6(H2). Strain RS-1T is also unique compared with other members of Desulfovibrio in its ability to synthesize intracellular magnetite particles. A novel species, Desulfovibrio magneticus sp. nov., is proposed for RS-1T (= ATCC 700980T = DSM 13731T), a sulfate-reducing magnetotactic bacterium.

Original languageEnglish
Pages (from-to)215-221
Number of pages7
JournalInternational Journal of Systematic and Evolutionary Microbiology
Volume52
Issue number1
Publication statusPublished - 2002
Externally publishedYes

Keywords

  • Desulfovibrio magneticus sp. nov.
  • Iron biomineralization
  • Magnetite
  • Magnetotactic bacteria
  • Sulfate-reducing

ASJC Scopus subject areas

  • Microbiology
  • Applied Microbiology and Biotechnology
  • Ecology, Evolution, Behavior and Systematics
  • Immunology

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