中文摘要：

对新疆古尔班通古特沙漠土样中分离到的一株耐辐射菌RL2进行了多相分类鉴定。结果发现，此菌为革兰氏阳性，球形，菌落为淡红色；菌株的（G＋C）mol％含量为71．62％；16SrDNA序列分析表明，菌株RL2的16SrDNA基因序列与D．radioduransDSM20539^T同源性最高（97．2％）。通过表型及系统进化树分析，确定RL2菌种分类应归于Deinococcus菌属，并可能是该菌属中的一个新种。

英文摘要：

A novel radio-resistant strain named RL2 was studied polyphasically, which was isolated from the soils in the Gurban-Tunggut Desert, Xinjiang. The strain is Gain-positive, sphere-shaped and pink pigmented; The DNA （G＋C） contents of RL2 is 71.62mo1%; The 16S rDNA genes of RL2 and D.radiodurans type strain DSM20539 shows a high level of similarity （97.2%）. According to phenotypic characteristics and phylogenetic analysis, it can be suggested that the strain RL2 has been identified as Deinococcus.sp and it may be a novel species.