期刊
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
卷 52, 期 -, 页码 215-221出版社
SOC GENERAL MICROBIOLOGY
DOI: 10.1099/00207713-52-1-215
关键词
Desulfovibrio magneticus sp nov.; iron biomineralization; magnetotactic bacteria; sulfate-reducing bacteria; magnetite
类别
A novel type of dissimilatory sulfate-reducing bacterium, designated strain RS-1(T), capable of producing intracellular magnetite particles (magnetosomes) was isolated from freshwater sulfide-rich sediments. Phylogenetic analysis based on 16S rDNA sequences revealed that RS-1(T) is a member of the genus Desulfovibrio. Its closest known relative is Desulfovibrio burkinensis (sequence similarity of 98.7%). Strain RS-1(T) contains desulfoviridin, c-type cytochromes and, unlike other Desulfovibrio spp., it possesses menaquinone MK-7(H-2) instead of MK-6 or MK-6(H-2). Strain RS-1(T) 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-1(T) (= ATCC 700980(T) = DSM 13731(T)), a sulfate-reducing magnetotactic bacterium.
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