Phylogenetic relationship and phenotypic comparison of Psychrobacter species isolated from polar oceans

作     者：ZENG Yinxin, LI Huirong, YU Yong and CHEN Bo (Key Laboratory for Polar Science of State Oceanic Administration, Polar Research Institute of China, Shanghai 200136, China) 

作者机构：Key Laboratory for Polar Science of State Oceanic Administration Polar Research Institute of China Shanghai 200136 China 

出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))

年 卷 期：2007年第17卷第1期

页      面：44-48页

核心收录：

学科分类：07[理学] 0705[理学-地理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 070501[理学-自然地理学] 0702[理学-物理学] 

基　　金：Supported by the National Key Basic Research Program of China(Grant No.2004CB719601) National Natural Science Foundation of China (Grant No.30200001) 

主　　题：Psychrobacter phylogenetic phenotypic Arctic Antarctic. 

摘      要：To investigate the phylogenetic relationship and biogeography of bacterioplankton in polar oceans, four Psychrobacter strains, BSw10170, BSw20352, BSw20370, and BSw20461, isolated from seawater of the Beijing Sea, the Chukchi Sea, and the Prydz Bay, were characterized by 16S rDNA sequencing and physiological and biochemical testing. Results demonstrated that close relationships existed between the Arctic and Antarctic strains with sequence similarities higher than 97 %. These four Psychrobacter strains not only showed almost identical phenotypic characteristics among them, but also shared a lot of similarities with those related Psychrobacter species, indicating that psychrotolerance and halotolerance of Psychrobacter strains may be among the reasons for their bipolar, even global distribution in marine environments at the genus level.