Two yellow-pigmented, Gram-stain-positive, aerobic, motile, short rod-shaped bacteria were isolated from natural teak tree rhizosphere soil and their taxonomic positions were determined by using a polyphasic approach. Comparative 16S rRNA gene sequence analysis showed that strains TG-S248T and TG-S24 formed a distinct phyletic line within the genus Leifsonia. 16S rRNA gene sequence analysis of strain TG-S248T with sequences from Leifsonia shinshuensis DB 12T, L. poae VKM Ac-141T, L. naganoensis DB 13T, L. aquatica DSM 2146T and L. xyli subsp. cynodontis JCM 9733T revealed pairwise similarities ranging from 98.7 to 99.1 %. The major fatty acids were anteiso-C15 : , anteiso-C17 : and iso-C16 : . The G+C content of the DNA of the type strain was 69.4 mol%. DNA–DNA hybridization experiments revealed low levels of DNA–DNA relatedness (32 % or less) between strain TG-S248T and its closest relatives. Based on differences in phenotypic and genotypic characteristics, strain TG-S248T (=LMG 24767T =JCM 15679T) is designated the type strain of a novel species of the genus Leifsonia, for which the name Leifsonia soli sp. nov. is proposed.
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