1887

Abstract

Two Gram-negative, heterotrophic, aerobic, marine bacteria, designated strains KT1 and KM1, were isolated from seawater samples collected from the shallow coastal regions of northern Taiwan. Cells grown in broth cultures were non-flagellated rods. NaCl was required for growth. Optimal growth occurred with 2–5 % NaCl, at 25–30 °C and at pH 8. They grew aerobically and were not capable of anaerobic growth by fermenting -glucose or other carbohydrates. Q-8 was the only isoprenoid quinone. The major polar lipid detected in strain KT1 was phosphatidylmonomethylethanolamine, whereas those detected in KM1 were phosphatidylmonomethylethanolamine, phosphatidyldimethylethanolamine and an unidentified phospholipid. Cellular fatty acids were nearly all iso-branched, with iso-C as the most abundant component (54.6–57.2 % of the total). Strains KT1 and KM1 had DNA G+C contents of 43.9 and 46.3 mol%, respectively. The two strains shared 98.1 % 16S rRNA gene sequence similarity; levels of similarity with the type strains of species of the genus were 95.6–98.4 %. Data from the present taxonomic study conducted using a polyphasic approach revealed that the isolates could be classified as representatives of two novel species of the genus , for which the names sp. nov. (type strain KT1 = BCRC 80330 = JCM 17727) and sp. nov. (type strain KM1 = BCRC 80329 = JCM 17728) are proposed.

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2012-09-01
2020-01-25
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