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Abstract

Strain GIMN 1.002, 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 belonged to the genus and was closely related to DSM 20754 (98.8 % 16S rRNA gene sequence similarity) and DSM 20530 (98.7 %). However, strain GIMN 1.002 had low DNA–DNA relatedness with DSM 20754 (17.1 %) and DSM 20530 (12.89 %). Strain GIMN 1.002 possessed chemotaxonomic markers that were consistent with its classification in the genus , i.e. MK-11, MK-12 and MK-10 as major menaquinones and anteiso-C (38.67 %), iso-C (18.16 %) and iso-C (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 represents a novel species of the genus , for which the name sp. nov. is proposed. The type strain is GIMN 1.002 (=CCTCC M208212 =NRRL B-24799).

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2010-11-01
2019-10-15
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vol. , part 11, pp. 2665 - 2670

Survival curves following exposure to UV light for strain GIMN 1.002 and its two closest phylogenetic neighbours. [PDF](36 KB)



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