Comparative phylogenetic analyses of Halomonas variabilis and related organisms based on 16S rRNA, gyrB and ectBC gene sequences

Takuji Okamoto, Akihiko Maruyama, Satoshi Imura, Haruko Takeyama, Takeshi Naganuma*

*この研究の対応する著者

研究成果: Article査読

32 被引用数 (Scopus)

抄録

Halomonas variabilis and phylogenetically related organisms were isolated from various habitats such as Antarctic terrain and saline ponds, deep-sea sediment, deep-sea waters affected by hydrothermal plumes, and hydrothermal vent fluids. Ten strains were selected for physiological and phylogenetic characterization in detail. All of those strains were found to be piezotolerant and psychrotolerant, as well as euryhaline halophilic or halotolerant. Their stress tolerance may facilitate their wide occurrence, even in so-called extreme environments. The 16S rDNA-based phylogenetic relationship was complemented by analyses of the DNA gyrase subunit B gene (gyrB) and genes involved in the synthesis of the major compatible solute, ectoine: diaminobutyric acid aminotransferase gene (ectB) and ectoine synthase gene (ectC). The phylogenetic relationships of H. variabilis and related organisms were very similar in terms of 16S rDNA, gyrB, and ectB. The ectC-based tree was inconsistent with the other phylogenetic trees. For that reason, ectC was inferred to derive from horizontal transfer.

本文言語English
ページ(範囲)323-333
ページ数11
ジャーナルSystematic and Applied Microbiology
27
3
DOI
出版ステータスPublished - 2004 5
外部発表はい

ASJC Scopus subject areas

  • 微生物学
  • 生態、進化、行動および分類学
  • 応用微生物学とバイオテクノロジー

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