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Cellulosimicrobium terreum sp. nov., isolated from soil

¹ Korea Research Institute of Bioscience and Biotechnology (KRIBB), PO Box 115, Yusong, Taejon, Korea
² DSMZ – Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstrasse 7b, D-38124 Braunschweig, Germany

Correspondence
Jung-Hoon Yoon
jhyoon{at}kribb.re.kr

A Gram-positive, yellow-pigmented, non-motile and rod-shaped or coccoid bacterial strain, DS-61^T, was isolated from soil from Dokdo, Korea, and its taxonomic position was investigated by using a polyphasic approach. The strain grew optimally at pH 6.5–7.5 and 25 °C in the presence of 1.0 % (w/v) NaCl. Strain DS-61^T had peptidoglycan of the type based on L-Lys–L-Thr–D-Asp and contained galactose as the only whole-cell sugar. MK-9(H₄) was the predominant menaquinone and anteiso-C_{15 : 0} and iso-C_{15 : 0} were the major fatty acids. The major polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol and an unidentified phospholipid. The DNA G+C content was 72.9 mol%. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain DS-61^T is most closely affiliated to the genus Cellulosimicrobium, clustering with Cellulosimicrobium cellulans and Cellulosimicrobium funkei. The levels of 16S rRNA gene sequence similarity between strain DS-61^T and the type strains of Cellulosimicrobium cellulans and Cellulosimicrobium funkei were 97.4–97.6 %. DNA–DNA relatedness data and differential phenotypic properties demonstrated that strain DS-61^T is distinguishable from these two recognized Cellulosimicrobium species. On the basis of phenotypic, phylogenetic and genetic data, strain DS-61^T represents a novel species of the genus Cellulosimicrobium, for which the name Cellulosimicrobium terreum sp. nov. is proposed. The type strain is DS-61^T (=KCTC 19206^T=DSM 18665^T). An emended description of the genus is given.