- Bacillus ferrooxidans sp. nov., an iron(II)-oxidizing bacterium isolated from paddy soil
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Guo-Wei Zhou , Xiao-Ru Yang , Jian-Qiang Su , Bang-Xiao Zheng , Yong-Guan Zhu
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J. Microbiol. 2018;56(7):472-477. Published online June 14, 2018
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DOI: https://doi.org/10.1007/s12275-018-7543-3
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An endospore-forming bacterium, designated YT-3T, was
isolated from a paddy soil in Yingtan, Jiangxi, China. Cells of
strain YT-3T were Gram-positive, rod-shaped, facultative
anaerobic, catalase, and oxidase positive. The optimum growth
temperature and pH were 30°C (ranged from 15 to 50°C)
and 6.5–7.0 (ranged from 3 to 11), respectively. Analysis of
the 16S rRNA gene sequence showed that strain YT-3T was
affiliated to the genus Bacillus and displayed the highest similarity
to that of Bacillus drentensis JCM 21707T (98.3%),
followed by B. ginsengisoli JCM 17335T (97.8%) and B. fumarioli
JCM 21708T (97.0%). The similarity of rpoB gene
sequence between strain YT-3T and B. drentensis JCM 21707T,
B. ginsengisoli JCM 17335T and B. fumarioli JCM 21708T was
80.4%, 81.5%, and 82.1%, respectively. The genomic DNA
G + C content was 44.9 mol%. The predominant respiratory
quinone was Menaquinone-7, and meso-diaminopimelic acid
was present in the peptidoglycan layer of cell wall. The major
fatty acids were C15:0 anteiso (36.2%), C14:0 iso (19.6%),
C15:0 iso (17.4%), and C16:0 iso (9.8%). The polar lipid profile
consisted of diphosphatidylglycerol, phosphatidylethanolamine,
phosphatidylglycerol, phospholipids, and ammoniac
phospholipids. The DNA-DNA hybridization values
between isolate YT-3T and B. drentensis (JCM 21707T), B.
ginsengisoli (JCM 17335T), and B. fumarioli (JCM 21708T)
were 36.3%, 30.3%, and 25.3%, respectively. On the basis of
physiological, genetic and biochemical data, strain YT-3T
represented a novel species of the genus Bacillus, for which
the name Bacillus ferrooxidans sp. nov was proposed. The type
strain is YT-3T (= KCTC 33875T = CCTCC AB 2017049T).
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Citations
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