1887

Abstract

Strains 2674 (=LMG 21259 =JCM 11435) and 2693 (=LMG 21258 =JCM 11436) were isolated from Atlantic sediments at a temperature of 2 °C and a depth of 2815 m off the West African coast. Polyphasic evidence indicates that the two strains belong to the genus and represent distinct species, for which the names sp. nov. (for strain 2674) and sp. nov. (for strain 2693) are proposed. The moderate piezophily of the two organisms is intermediate between that of the type species, , which is not piezophilic, and , an obligate piezophile. Both are strict psychrophiles with slightly different cardinal temperatures: at 0·1 MPa, maximal growth rates are observed at 2 °C () and 4 °C () with maximum temperatures of 12 °C () or 14 °C (). The optimal pressure is lower than that at the site of isolation, and raising the temperature to 10 °C makes the organisms more piezophilic.

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2003-03-01
2019-10-18
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