Antonie Van Leeuwenhoek 2015-02-01

Pedobacter bambusae sp. nov., isolated from soil of a bamboo plantation.

Kyung Hwa Won, MooChang Kook, Tae-Hoo Yi

Index: Antonie van Leeuwenhoek 107(2) , 565-73, (2015)

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Abstract

An ivory white, rod-shaped, non-motile, non-spore forming, Gram-staining-negative, and aerobic bacterium designated THG-G118T, was isolated from a soil sample collected in a bamboo plantation in Seoul, Republic of Korea. The 16S rRNA gene sequence analysis revealed a clear affiliation of strain THG-G118T with the genus Pedobacter. Strain THG-G118T was found to show the closest phylogenetic relationship with Pedobacter metabolipauper WB2.3-71T with 16S rRNA gene sequence similarity of 97.3 %. The major cellular fatty acids of strain THG-G118T were identified as C16:0, C18:0, iso-C15:0 and summed feature 3 (C16:1 ω7c and/or C16:1 ω6c), and the predominant menaquinone as menaquinone MK-7. The major polar lipids were found to be phosphatidylethanolamine (PE), unidentified phospholipid and unidentified aminophospholipids. Strain THG-G118T was found to contain ceramide phosphorylethanolamine 2 (CerPE-2) and dihydrosphingosine as the major ceramide. The G+C content of the genomic DNA was found to be 41.7 mol%. DNA-DNA hybridization experiments revealed a low level of DNA-DNA relatedness (<42.5 %) between strain THG-G118T and its closest relatives. The phenotypic, chemotaxonomic and phylogenetic data showed that strain THG-G118T could be clearly distinguished from the members of the genus Pedobacter. Based on the results of a polyphasic study, a new species, Pedobacter bambusae sp. nov., is proposed. The type strain is THG-G118T (=KACC 17544T = JCM 19364T).