Journal
ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY
Volume 108, Issue 3, Pages 695-701Publisher
SPRINGER
DOI: 10.1007/s10482-015-0525-0
Keywords
Hydrogenophaga luteola; Gram-staining negative; Ubiquinone-8; 16S rRNA
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Funding
- Ministry of Trade, Industry & Energy (MOTIE, Korea) [N0000888]
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A yellowish colored, Gram-staining negative, strictly aerobic, motile, rod-shaped bacterium, designated THG-SQE7(T), was isolated from reed pond water in Shangqiu, PR China. Comparative 16S rRNA gene sequence analysis indicated that strain THG-SQE7(T) is most closely related to Hydrogenophaga pseudoflava ATCC 33668(T) (98.4 %), followed by Hydrogenophaga bisanensis K102(T) (97.6 %) and Hydrogenophaga flava CCUG 1658(T) (97.6 %). DNA-DNA hybridization showed 53.5, 36.0 and 22.5 % DNA re-association with H. pseudoflava KCTC 2348(T), H. bisanensis KCTC 12980(T) and H. flava KCTC 1648(T), respectively. Chemotaxonomic data revealed that strain THG-SQE7(T) possesses ubiquinone-8 as the only isoprenoid quinone, summed feature 3 (C-16:1 omega 7c and/or C-16:1 omega 6c), C-16:0 and C-18:1 omega 7c as the major fatty acids. The major polar lipids were found to be phosphatidylethanolamine, phosphatidylglycerol and diphosphatidylglycerol. The DNA G+C content was determined to be 63.7 mol%. These data corroborated the affiliation of strain THG-SQE7(T) to the genus Hydrogenophaga. Thus, the isolate represents a novel species, for which the name Hydrogenophaga luteola sp. nov. is proposed, with THG-SQE7(T) as the type strain (=KCTC 42501(T) = CCTCC AB 2014314(T) = JCM 30433(T)).
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