Microbacterium radiodurans sp. nov., a UV radiation-resistant bacterium isolated from soil

文献类型： 外文期刊

第一作者： Zhu, Hong-hui

作者： Zhu, Hong-hui;Yang, Song-zhen;Zhang, Wei;Yuan, Menglong;Tang, Ran;Lin, Min;Li, Zhi-kun;Chen, Ming;Yuan, Menglong;Yao, Qing

作者机构：

期刊名称：INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY （ 影响因子：2.747； 五年影响因子：2.889 ）

ISSN： 1466-5026

年卷期： 2010 年 60 卷

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收录情况： SCI

摘要： Strain GIMN 1.002(T), a UV radiation-tolerant bacterium, was isolated from the upper sand layers of the Gobi desert, Xinjiang, China and characterized in order to determine its taxonomic position. Cells were Gram-reaction-positive, heterotrophic, strictly aerobic, short rods. 16S rRNA gene sequence analysis revealed that strain GIMN 1.002(T) belonged to the genus Microbacterium and was closely related to Microbacterium arborescens DSM 20754(T) (98.8% 16S rRNA gene sequence similarity) and Microbacterium imperiale DSM 20530(T) (98.7%). However, strain GIMN 1.002(T) had low DNA-DNA relatedness with M. arborescens DSM 20754(T) (17.1 %) and M. imperiale DSM 20530(T) (12.89 %). Strain GIMN 1.002(T) possessed chemotaxonomic markers that were consistent with its classification in the genus Microbacterium, i.e. MK-11, MK-12 and MK-10 as major menaquinones and anteiso-C(15:0) (38.67%), iso-C(16:0) (18.16%) and iso-C(15:0) (17.46 %) as predominant cellular fatty acids. The DNA G + C content was 67.74 mol%. The cell-wall sugar was rhamnose. On the basis of the data from this study, strain GIMN 1.002(T) represents a novel species of the genus Microbacterium, for which the name Microbacterium radiodurans sp. nov. is proposed. The type strain is GIMN 1.002(T) (=CCTCC M208212(T) =NRRL B-24799(T)).

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