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Psychromonas profunda sp. nov., a psychropiezophilic bacterium from deep Atlantic sediments

¹ J. M. Wiame Research Institute for Microbiology, Free University of Brussels (VUB), and Flanders Inter-University Institute for Biotechnology, 1 ave E. Gryson, B-1070 Brussels, Belgium
² The DEEP STAR Group, Japan Marine Science and Technology Center, 2-15 Natsushima-cho, Yokosuka 237-0061, Japan
³ Alfred Wegener Institut für Polar-und Meeresforschung, Am Handelshafen 12, D-27570 Bremerhaven, Germany

Correspondence
Ying Xu
xuying{at}vub.ac.be

A psychropiezophilic bacterium, strain 2825^T (=LMG 21260^T =JCM 11437^T), isolated from deep Atlantic sediments at a depth of 2770 m and a temperature of 2 °C, was found by polyphasic analysis to represent a novel species of the genus Psychromonas, Psychromonas profunda sp. nov. It is a strict psychrophile and a moderate piezophile, whose degree of piezophily is increased markedly when the temperature is raised to 10 °C. The piezophily of P. profunda is intermediate between that of the type species, Psychromonas antarctica, which is not piezophilic, and that of Psychromonas kaikoae, which is an obligate piezophile.

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