Moritella profunda sp. nov. and Moritella abyssi sp. nov., two psychropiezophilic organisms isolated from deep Atlantic sediments.
Moritella profunda sp. nov. and Moritella abyssi sp. nov., two psychropiezophilic organisms isolated from deep Atlantic sediments.
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Moritella profunda sp.
DOI：
10.1099/ijs.0.02228-0
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发表时间：
2003
影响因子：
2.8
通讯作者：
N. Glansdorff
中科院分区：
文献类型：
--
作者：
Ying Xu;Y. Nogi;C. Kato;Ziyuan Liang;H. Rüger;D. De Kegel;N. Glansdorff
菌株2674 T（=LMG 21259 T =JCM 11435 T）和2693 T（=LMG 21258 T =JCM 11436 T）分离自温度为2 ℃、距离西非海岸2815 m深度的大西洋沉积物。多相证据表明，这两个菌株属于Moritella属，并代表不同的物种，其中Moritella profunda sp. nov.（菌株2674T）和Moritella abyssi sp. nov.（菌株2693T）被提议命名。这两种生物的中度piezophily是中间的模式种，Moritella marina，这是不是piezophilic，和Moritella yayanosii，专性piezophile。两者都是严格的嗜冷菌，基本温度略有不同：在0.1 MPa下，在2 ℃下观察到最大生长速率（M。深）和4摄氏度（M. abyssi），最高温度为12摄氏度（M。深）或14摄氏度（M. abyssi）。最佳压力低于隔离部位的压力，将温度提高到10摄氏度使生物体更加嗜压。
Strains 2674T (=LMG 21259T =JCM 11435T) and 2693T (=LMG 21258T =JCM 11436T) were isolated from Atlantic sediments at a temperature of 2 degrees C and a depth of 2815 m off the West African coast. Polyphasic evidence indicates that the two strains belong to the genus Moritella and represent distinct species, for which the names Moritella profunda sp. nov. (for strain 2674T) and Moritella abyssi sp. nov. (for strain 2693T) are proposed. The moderate piezophily of the two organisms is intermediate between that of the type species, Moritella marina, which is not piezophilic, and Moritella yayanosii, an obligate piezophile. Both are strict psychrophiles with slightly different cardinal temperatures: at 0.1 MPa, maximal growth rates are observed at 2 degrees C (M. profunda) and 4 degrees C (M. abyssi) with maximum temperatures of 12 degrees C (M. profunda) or 14 degrees C (M. abyssi). The optimal pressure is lower than that at the site of isolation, and raising the temperature to 10 degrees C makes the organisms more piezophilic.