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''Magnetospirillum'' is a Gram-negative, microaerophilic genus of magnetotactic bacterium, first isolated from pond water by the microbiologist R. P. Blakemore in 1975.〔 * 〕〔 〕 They have a spiral (helical) shape and are propelled by a polar flagellum at each end of their cells. Four species have been described: ''M. magnetotacticum'' strain MS-1 (originally classified as ''Aquaspirillum magnetotacticum'';〔(【引用サイトリンク】publisher = The Joint Genome Institute ) 〕 ''M. magneticum'' strain AMB-1;〔 〕 ''M. gryphiswaldense''〔 〕 and ''M. bellicus''. ==Habitat== The typical habitat of ''Magnetospirillum'' species consists of shallow fresh water and sediments, characterized by low concentrations of oxygen for growth (microaerophilic) where they live in the upper portion of the sediment (oxic/anoxic interface) and prefer an oxygen gradient of around 1–3%. 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「Magnetospirillum」の詳細全文を読む スポンサード リンク
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