1887

Abstract

Two bacterial strains, M-5 and WP0211, were isolated from the surface water of a waste-oil pool in a coastal dock and from a deep-sea sediment sample from the West Pacific Ocean, respectively. Analysis of 16S rRNA gene sequences indicated that both strains belonged to the class and were closely related to (96.1 and 96.2 %, gene sequence similarity, respectively). Based on the results of physiological and biochemical tests, as well as DNA–DNA hybridization experiments, it is suggested that these isolates represent two novel species of the genus . Various traits allow both novel strains to be differentiated from , including oxygen requirement, nitrate reduction and denitrification abilities and major fatty acid profiles, as well as their ability to utilize six different carbon sources. Furthermore, the novel strains may be readily distinguished from each other by differences in their motility, flagellation, growth at 4 °C and 40 °C, their ability to hydrolyse Tween 40 and Tween 80, their utilization of 19 different carbon sources and by quantitative differences in their fatty acid contents. It is proposed that the isolates represent two novel species for which the names sp. nov. (type strain, M-5=DSM 17429=CGMCC 1.3998) and sp. nov. (type strain, WP0211=DSM 17430=CGMCC 1.3997) are proposed.

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2007-02-01
2020-01-27
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