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
2019-10-14
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