Open AccessPhylogenetic analysis of a novel sulfate‐reducing magnetic bacterium, RS‐1, demonstrates its membership of the δ‐Proteobacteria
Author(s) -
Kawaguchi Ryuji,
Burgess J. Grant,
Sakaguchi Toshifumi,
Takeyama Haruko,
Thornhill Richard H,
Matsunaga Tadashi
Publication year - 1995
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1995.tb07430.x
Subject(s) - proteobacteria , phylogenetic tree , biology , 16s ribosomal rna , bacteria , microbiology and biotechnology , biomineralization , phylogenetics , genetics , gene , paleontology
Most of the 16S ribosomal RNA gene of a sulfate‐reducing magnetic bacterium, RS‐1, was sequenced, and phylogenetic analysis was carried out. The results suggest that RS‐1 is a member of the δ‐Proteobacteria, and it appears to represent a new genus. RS‐1 is the first bacterium reported outside the α‐Proteobacteria that contains magnetite inclusions. RS‐1 therefore disrupts the correlation between the α‐Proteobacteria and possession of magnetite inclusions, and that between the δ‐Proteobacteria and possession of greigite inclusions. The existence of RS‐1 also suggests that intracellular magnetite biomineralization is of multiple evolutionary origins.