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. 2014 May;105(5):987-94.
doi: 10.1007/s10482-014-0158-8. Epub 2014 Mar 25.

Pseudoruegeria Limi Sp. Nov. Isolated From Mud Flats in the Yellow Sea in Korea

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Pseudoruegeria Limi Sp. Nov. Isolated From Mud Flats in the Yellow Sea in Korea

Jae-Bong Lee et al. Antonie Van Leeuwenhoek. .

Abstract

A Gram-negative, aerobic, non-motile and rod-shaped bacterial strain, D-17(T), was isolated from mud flats in the Yellow Sea in Korea. Phylogenetic trees based on the 16S rRNA gene sequence showed that strain D-17(T) belongs to the genus Pseudoruegeria and it shared 97.5 % similarity with the type strain of Pseudoruegeria haliotis WM67(T). The sequence similarities with Pseudoruegeria litimaris HD-43(T) and Pseudoruegeria aquimaris SW-255(T) were 96.9 and 96.1 %, respectively. Strain D-17(T) was found to grow with 0.5-6 % (w/v) NaCl, at 20-30 °C, and at pH 6.5-8.0. Strain D-17(T) was determined to contain Q-10 as the predominant ubiquinone and summed feature 8 (C18:1 ω7c and/or C18:1 ω6c, as defined by the MIDI system) as the major fatty acids. The major polar lipids were identified as phosphatidylglycerol, diphosphatidylglycerol, an unidentified aminolipid, an unidentified glycolipid, an unidentified lipid and four unidentified phospholipids. The DNA G+C content was determined to be 63.6 mol%. The DNA-DNA relatedness with P. haliotis WM67(T) was 32.5 %. The differential phenotypic properties revealed that strain D-17(T) can be separated from other Pseudoruegeria species. Based on the data presented in this study, strain D-17(T) represents a novel species, for which the name Pseudoruegeria limi sp. nov. is proposed. The type strain is D-17(T) (=KCTC 32460(T) =JCM 19487(T)).

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