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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Shewanella violacea ： ウィキペディア英語版 Shewanella violacea ''Shewanella violacea'' DSS12 (''S. violacea'') is a gram-negative bacterium located in marine sediment in the Ryukyu Trench at a depth of 5,110m.〔Nogi, Y., C. Kato, and K. Horikoshi. "Taxonomic studies of deep-sea barophilic ''Shewanella'' strains and description of ''Shewanella violacea'' sp. nov." ''Archives of Microbiology'' 170(5) (1998): 331–38. Print.〕 The first description of this organism was published in 1998 by Japanese microbiologists Yuichi Nogi, Chiaki Kato, and Koki Horikoshi, who named the species after its violet appearance when it is grown on Marine Agar 2216 Plates.〔 ''S. violacea'' is a motile rod-shaped bacterium with flagella.〔Chikuma, Sayaka, Ryota Kasahara, Chiaki Kato, and Hideyuki Tamegai. "Bacterial adaptation to high pressure: a respiratory system in the deep-sea bacterium ''Shewanella violacea'' DSS12." ''FEMS Microbiology Letters'' 267(1) (2007): 108–12. Print.〕 It is a facultative anaerobic organism and considered an extremophile due to its optimal growing conditions at 8ᵒC and 30 MPa.〔Kato, Chiaki, and Yuichi Nogi. "Correlation between phylogenetic structure and function: examples from deep-sea ''Shewanella''." ''FEMS Microbiology Ecology'' 35(3) (2001): 223–30. Print.〕 Researchers are evaluating this species to better understand the specific mechanisms ''S. violacea'' uses in order to thrive in its unusually cold and high-pressure environment. == Taxonomy == ''S. violacea'' is a member of the ''Shewanella'' genus. Recent evaluation of the ''Shewanella'' phylogeny has led to a division of this genus into two categories: Group 1 and Group 2. These categories were created from an evaluation of the 16s rRNA sequences as well as a comparison of membrane lipid compositions. Group 1 ''Shewanella'' species are mostly extremophiles while Group 2 ''Shewanella'' species are mostly mesophiles.〔 ''S. violacea'' is a member of Group 1 ''Shewanella'' due to specific genetic adaptations that have enabled the bacteria to thrive in extremely low temperatures and high pressures. Specifically, Group 1 species contain a notably higher percentage of polyunsaturated fatty acids integrated in their membranes.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Shewanella violacea」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.