1887

Abstract

Two strains of Gram-negative, methylotrophic bacteria, isolated because of their abilities to promote plant growth, were subjected to a polyphasic taxonomic study. The isolates were strictly aerobic, motile, pink-pigmented, facultatively methylotrophic, non-spore-forming rods. The chemotaxonomic characteristics of the isolates included the presence of Cω7 as the major cellular fatty acid. The DNA G+C contents of strains BL36 and BL47 were 69.4 and 69.8 mol%, respectively. 16S rRNA gene sequence analysis of strains BL36 and BL47 placed them under the genus with the pairwise sequence similarity between them and the type strains of closely related species ranging from 97.2 to 99.0 %. On the basis of their phenotypic and phylogenetic distinctiveness and the results of DNA–DNA hybridization analysis, the isolates represent two novel species within the genus , for which the names sp. nov. (type strain BL36 = NBRC 105203 = ICMP 17621) and sp. nov. (type strain BL47 = NBRC 105206 = ICMP 17619) are proposed.

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2014-07-01
2021-02-26
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