Physiological and Biochemical Characteristics of Halophilic Archaea Isolated from Lop Nur Surrounding Region in Xinjiang,and Gen Sequence of 16S rRNA,China

Objective:Study and analyze the species resource from a Salt Lake pH5-6 in the LopNur surrounding region,Xinjiang.A group of halophilic archaea strains isolated from a Salt Lake pH5-6 in the LopNur surrounding region,Xinjiang.And their physiological and biochemical characteristics were determined.Based on its morphology and physiological and biochemical features,16S rRNA encoding gene(16S rDNA) from six strains were amplified byPCR,and the nucleotide sequences were determined.The results indicated that the strain B20-RDX was was a novol species of the genus Haloarchaeon,The GenBank accession numbers of the 16S rDNA sequences about strain is FJ561285.The strain B20-RDX is Gram-negative balls,The optimum salt concentration for its growth is 25%,and the optimum pH is at 8.0.The strain B20-RDX produce catalases and amylases,which resistant to tetracycline.B20-RDX make use of arginine and succinate salts.Now,there are few report about Extreme halophiles from Lop Nur surrounding region,in China.The study has offered enlarge the boundary of halophilic archaea diversity and provide halophilic archaea resources for further theoretical and applied researches.