Relationships between Arctic and Antarctic Shewanella strains evaluated by a polyphasic taxonomic approach

As a result of the recent application of DNA-based technologies to investigate bacterial diversity in the polar marine environment, bacterial strains sharing significant 16S rRNA gene sequence similarities were isolated from both the Arctic and the Antarctic sea waters. Three selected marine bacteri...

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Bibliographic Details
Published in:Polar Biology
Main Authors: Zeng, Yinxin, Zheng, Tianling, 郑天凌, Yu, Yong, Chen, Bo, He, Jianfeng
Format: Article in Journal/Newspaper
Language:English
Published: SPRINGER 2010
Subjects:
Shewanella frigidimarina
Bipolar distribution
Polyphasic taxonomy
Antarctic
Arctic
Canada
Greenland
Prydz Bay
The Antarctic
Antarc*
Antarctica
canada basin
Greenland Sea
International Polar Year
IPY
Polar Biology
Online Access:https://doi.org/10.1007/s00300-009-0730-2
http://dspace.xmu.edu.cn/handle/2288/10260
Description
Summary:As a result of the recent application of DNA-based technologies to investigate bacterial diversity in the polar marine environment, bacterial strains sharing significant 16S rRNA gene sequence similarities were isolated from both the Arctic and the Antarctic sea waters. Three selected marine bacterial isolates (BSw20248, BSw20661 and BSw10166) from two Arctic regions (the Greenland Sea and Canada Basin) and from Antarctica (Prydz Bay) were studied to determine their evolutionary relationships and phylogenetic position using a polyphasic taxonomic approach, including phenotypic characterization and genotypic analyses. These bacterial isolates proved to belong to the same species and were identified as Shewanella frigidimarina. Differences in phenotypic properties observed among them revealed a diversity of ecotypes for adaptation to the changing ecological or geographical conditions. It provided the evidence that Shewanella frigidimarina has a bipolar, or even global, distribution in the marine environment. National Natural Science Foundation of China [40576002, 40676002, 40876097]; High-Tech Research and Development Program of China [2008AA09Z408]; Program for Changjiang Scholars and Innovative Research Team in University [40821063]; Science and Technology Committee of Shanghai, China [052307053]; China's Action Plan for the International Polar Year (IPY)

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