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

作　　者：ZENG Yinxin LI Huirong YU Yong CHEN Bo 

机构地区：[1]Key Laboratory for Polar Science of State Oceanic Administration, Polar Research Institute of China, Shanghai 200136, China

出　　处：《Progress in Natural Science:Materials International》2007年第1期44-48,共5页自然科学进展·国际材料（英文版）

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

摘　　要：To investigate the phylogenetic relationship and biogeography of bacterioplankton in polar oceans, four Psychrobacter strains, BSwl0170, BSw20352, BSw20370, and BSw20461, isolated from seawater of the Bering 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 simitarities 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.

关 键 词：PSYCHROBACTER PHYLOGENETIC PHENOTYPIC ARCTIC ANTARCTIC 

分 类 号：P941.6[天文地球—自然地理学]