期刊
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
卷 60, 期 -, 页码 2490-2495出版社
MICROBIOLOGY SOC
DOI: 10.1099/ijs.0.015487-0
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- Rural Development Administration, Republic of Korea
A Gram-positive bacterium, designated strain CBMB205(T), was isolated from the rhizosphere soil of traditionally cultivated, field-grown rice. Cells were strictly aerobic, motile, rod-shaped and formed endospores. The best growth was achieved at 30 degrees C and pH 7.0 in ammonium mineral salts (AMS) medium containing 600 mM methanol. A comparative 16S rRNA gene sequence-based phylogenetic analysis placed strain CBMB205(T) in a clade with the species Bacillus amyloliquefaciens, Bacillus vallismonis, Bacillus subtilis, Bacillus atrophaeus, Bacillus mojavensis and Bacillus licheniformis and revealed pairwise similarities ranging from 98.2 to 99.2%. DNA-DNA hybridization experiments revealed a low level (<36%) of DNA-DNA relatedness between strain CBMB205(T) and its closest relatives. The major components of the fatty acid profile were C-15:0 anteiso, C-15:0 iso, C-16:0 iso and C-17:0 anteiso. The diagnostic diamino acid of the cell wall was meso-diaminopimelic acid. The G+C content of the genomic DNA was 45.0 mol%. The lipids present in strain CBMB205T were diphosphatidylglycerol, phosphatidylglycerol, a minor amount of phosphatidylcholine and two unknown phospholipids. The predominant respiratory quinone was MK-7. Studies of DNA DNA relatedness, morphological, physiological and chemotaxonomic analyses and phylogenetic data based on 16S rRNA gene sequencing enabled strain CBMB205(T) to be described as representing a novel species of the genus Bacillus, for which the name Bacillus methylotrophicus sp. nov. is proposed. The type strain is CBMB205(T) (=KACC 13105(T)=NCCB 100236(T)).
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