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- Title
Phaeobacter marinintestinus sp. nov., isolated from the intestine of a sea cucumber ( Apostichopus japonicus).
- Authors
Lee, Mi-Hwa; Song, Eun-Ji; Seo, Myung-Ji; Hyun, Dong-Wook; Bae, Jin-Woo; Lee, So-Young; Roh, Seong; Nam, Young-Do
- Abstract
A Gram-negative, strictly aerobic, non-motile, and rod-shaped bacterial strain designated UB-M7 was isolated from the intestine of a sea cucumber ( Apostichopus japonicus) collected from Pohang in South Korea. Strain UB-M7 displayed optimal growth at 25 °C, pH 7.0-7.5, and with 2.0-3.0 % (w/v) NaCl. Phylogenetic analyses based on the 16S rRNA gene sequences showed that strain UB-M7 clustered with Phaeobacter arcticus DSM 23566, Phaeobacter inhibens DSM 16374, Phaeobacter gallaeciensis BS107, and Phaeobacter leonis 306, exhibiting 16S rRNA gene sequence similarity values of 96.8, 96.6, 96.4, and 96.2 %, respectively. Strain UB-M7 was found to exhibit the highest gyrB sequence similarity value of 80.6 % to the type strain of P. arcticus. The major respiratory quinone of strain UB-M7 was found to be ubiquinone 10 (Q-10). The major cellular fatty acids (>5 % of the total fatty acids) are summed features 8 (comprising C ω7 c and/or C ω6 c), 11-methyl C ω7 c, and cyclo C ω8 c. The DNA G+C content was found to be 58.5 mol% and DNA-DNA relatedness value with P. arcticus JCM 14644 was 17.2 ± 2.4 %. The major polar lipids of strain UB-M7 were identified as phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, phosphatidylcholine; one phospholipid, and three other lipids remain unidentified. Based on its phenotypic, phylogenetic, and chemotaxonomic properties it is concluded that strain UB-M7 represents a novel species in the genus Phaeobacter, for which the name Phaeobacter marinintestinus sp. nov. is proposed. The type strain is UB-M7 (=KCCM 43045 = JCM 19926).
- Subjects
SOUTH Korea; GRAM-negative aerobic bacteria; SEA cucumbers; APOSTICHOPUS japonicus; POSCO (Company); RIBOSOMAL RNA; FATTY acids; QUINONE
- Publication
Antonie van Leeuwenhoek, 2015, Vol 107, Issue 1, p209
- ISSN
0003-6072
- Publication type
Article
- DOI
10.1007/s10482-014-0318-x