Microbacterium marinum sp. nov., isolated from deep-sea water
- 標題
- Microbacterium marinum sp. nov., isolated from deep-sea water
- 作者
- Limin Zhang, Lijun Xi, Jisheng Ruan, Ying Huang
- 文件屬性
- 國外期刊
- 知識分類
- 基礎研究
- 出版年
- 2012
- 刊名
- Systematic and Applied Microbiology
- 關鍵字
- Microbacterium; Microbacterium marinum sp. nov.; Taxonomic position; Polyphasic approach; Deep sea water
- 點閱數
- 2379
摘要
Two Gram-positive, rod-shaped bacterial strains, H101T and H207, were isolated from deep sea water collected from South-West Indian Ocean. Phylogenetic analysis of 16S rRNA gene sequences showed that the two strains were closely related to one another (100% similarity), and had the closest relationship withMicrobacterium hominis NBRC 15708T and Microbacterium insulae KCTC 19247T (98.2–98.3% similarities). DNA–DNA hybridization value between strains H101T and H207 was 87.2 ± 3.7%, and the values between the two strains and the closely related type strains were well below 70%. The two strains also shared a number of physiological and biochemical characteristics that were distinct from the closely related species, and grew at 2–37 °C, pH 5–11 and 0–8% (w/v) NaCl. Both strains contained MK-12, MK-13 and MK-11 as the detected menaquinones. The peptidoglycan was of type B1γ with an interpeptide bridge D-Glu(Hyg) → Gly2 → l-Lys. The major cellular fatty acids were anteiso-C15:0, anteiso-C17:0, and iso-C16:0. Based on the genetic and phenotypic properties, it is proposed that strains H101T and H207 be classified as representatives of a novel species of the genus Microbacterium, with the name Microbacterium marinum sp. nov. The type strain is H101T (=CGMCC 4.6941T = DSM 24947T).