Journal
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
Volume 58, Issue -, Pages 671-675Publisher
MICROBIOLOGY SOC
DOI: 10.1099/ijs.0.65191-0
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Strain BCRC 14193, isolated from soil, shared more than 99% 16S rRNA gene sequence similarity with Bacillus amyloliquefaciens BCRC 11601(T) and Bacillus velezensis BCRC 17467(T). This strain was previously identified as B. amyloliquefaciens, based on DNA-DNA hybridization, but its DNA relatedness value with B. velezensis BCRC 17467(T) was 89%. To investigate the relatedness of strain BCRC 14193, B. amyloliquefaciens and B. velezensis, the partial sequence of the gene encoding the subunit B protein of DNA gyrase (gyrB) was determined. B. velezensis BCRC 17467(T) shared high gyrB gene sequence similarity with B. amyloliquefaciens BCRC 14193 (98.4%) and all of the B. amyloliquefaciens strains available (95.5-95.6%). DNA-DNA hybridization experiments revealed high relatedness values between B. velezensis BCRC 17467(T) and B. amyloliquefaciens BCRC 11601(T) (74%) and the B. amyloliquefaciens reference strains (74-89%). Based on these data and the lack of phenotypic distinctive characteristics, we propose Bacillus velezensis as a later heterotypic synonym of Bacillus amyloliquefaciens.
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