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Adhaeribacter terreus sp. nov., isolated from forest soil

¹ Institute of Microbiology;
² Institute of Microbiology, Chinese Academy of Sciences

³ E-mail: liusj{at}sun.im.ac.cn

The bacterial strain DNG6T was isolated from forest soil of Changbai mountains, Heilongjiang province, China. Cells of strain DNG6T were Gram-staining-negative, 0.3-0.5 µm in diameter and 1.0-2.0 µm in length, strictly aerobic and produced large amounts of extracellular fibrillar material. Growth occurred at 16-33 oC (optimum, 28 oC), at pH 6.0-9.0 (optimum, pH 7.0-7.5), and in the presence of 0-1% NaCl (optimum, 0%). Strain DNG6T contained MK-7 as the major respiratory quinone and iso-C15:0 (40.6%) and summed feature 4 (comprising iso-C17:1 I and/or anteiso-C17:1 B: 26.5%) as the major cellular fatty acids. The DNA G+C content was 48.1 mol% (Tm). Phylogenetic analysis based on 16S rRNA gene sequences indicated that the closest relative of strain DNG6T was Adhaeribacter aquaticus MBRG1.5Twith 93.9% sequence similarity. Based on these results, it is concluded that strain DNG6T represents a novel species of the genus Adhaeribacter, for which the name Adhaeribacter terreus is proposed, with DNG6T (=CGMCC 1.6961T = NBRC 104235T) as the type strain.