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Abstract

A novel bacterium, TRM 0175, belonging to the genus , was isolated from a soil sample taken from a salt lake in Xinjiang Province, north-west China. The isolate was Gram-negative, aerobic, rod-shaped and motile by means of peritrichous flagella. It was catalase-positive and oxidase-negative. Growth occurred at NaCl concentrations of 0–20 % (optimum at 10–13 %), at 15–50 °C (optimum at 37 °C) and at pH 6.0–9.0 (optimum at pH 7.0). Metabolism was respiratory with oxygen as terminal electron acceptor. Acid was produced from -ribose, - and -arabinose, -xylose, -galactose, -mannose, -rhamnose, cellobiose, maltose, trehalose and - and -fucose and was produced weakly from aesculin. The predominant ubiquinone was Q-9. The major fatty acids were C 7 and C cyclo 8. The GC content of the genomic DNA was 60.0 mol%. The affiliation of strain TRM 0175 with the genus was confirmed by 16S rRNA gene sequence comparisons. The most closely related species was ; 16S rRNA gene sequence similarity between FP35 and strain TRM 0175 was 95.3 %. Phenotypically, some characteristics of TRM 0175 differed from those of . On the basis of data from this polyphasic study, strain TRM 0175 represents a novel species of the genus , for which the name sp. nov. is proposed; the type strain is TRM 0175 (=CCTCC AB 208329 =KCTC 22608).

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2010-02-01
2019-09-23
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Phylogenetic trees, based on maximum-parsimony and maximum-likelihood analysis of 16S rRNA gene sequences, showing the position of strain TRM 0175 and closely related species. [PDF](57 KB)

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Transmission electron micrograph of a cell of strain TRM 0175 . Bar, 1.0 µm.

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