Taxonomic studies of extremely barophilic bacteria isolated from the Mariana Trench and description of Moritella yayanosii sp. nov., a new barophilic bacterial isolate

被引：61

作者：

Nogi, Y ^{[1
]}

Kato, C ^{[1
]}

机构：

[1] Japan Marine Sci & Technol Ctr, DEEP STAR Grp, Yokosuka, Kanagawa 2370061, Japan

来源：

EXTREMOPHILES | 1999年 / 3卷 / 01期

关键词：

extremely barophilic bacteria; Deep Sea; Shewanella benthica; Moritella yayanosii; Mariana Trench;

D O I：

10.1007/s007920050101

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

We have isolated two strains of extremely barophilic bacteria from sediment collected from the world's deepest ocean floor in the Mariana Trench, Challenger Deep, at a depth of 10898m [Kato C, Li L, Nogi Y, Nakamura Y, Tamaoka J, Horikoshi K (1998) Appl Environ Microbiol 64:1510-1513]. One strain, DB21MT-2, was identified as a strain of Shewanella benthica, and the other strain, DB21MT-5, is closely affiliated with members of the genus Moritella on the basis of 168 rDNA sequence analysis. The hybridization values for DNA-DNA relatedness between DB21MT-5 and the Moritella reference strains were significantly lower than that accepted as the phylogenetic definition of a species. Based on this and other taxonomic differences, strain DB21MT-5 appears to represent a novel obligately barophilic deep-sea Moritella species. The name Moritella yayanosii (JCM 10263) is proposed. This is the first proposed species of obligately barophilic bacteria of the genus Moritella.

引用

页码：71 / 77

页数：7

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