1887

Abstract

A novel, halophilic, motile, rod-shaped, Gram-staining-negative and non-endospore forming bacterium, designated Cs25, was isolated from the rhizosphere of the halophyte growing in a tidal flat. Strain Cs25 was observed to be catalase-negative and oxidase-positive, and to hydrolyse hypoxanthine. Growth occurred from 15 to 40 °C, at pH 7.0−10.0 and with 1−11 % (w/v) NaCl. Q-10 was identified as the dominant ubiquinone, and the major cellular fatty acids were C 7, 11-methyl Cω7, Cω7 and C The polar lipids comprised phosphatidylmonomethylethanolamine, phosphatidylcholine, sulphoquinovosyldiacylglyceride, diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine. The 16S rRNA gene showed 99.19, 98.6 and 98.59 % sequence identity with DSM 18320, DSM 13394 and DSM 17023, respectively. Based on the phenotypic and molecular features and DNA–DNA hybridization data, it is concluded that strain Cs25 represents a novel species for which the name sp. nov. is proposed. The type strain is Cs25 (=DSM 29163=CECT 8816).

Keyword(s): Labrenzia , rhizosphere and taxonomy
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2016-12-01
2020-01-20
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