Phaeobacter aquaemixtae sp nov., isolated from the junction between the ocean and a freshwater spring

被引:51
作者
Park, Sooyeon [1 ]
Park, Doo-Sang [2 ]
Bae, Kyung Soak [2 ]
Yoon, Jung-Hoon [1 ]
机构
[1] Sungkyunkwan Univ, Dept Food Sci & Biotechnol, Suwon, South Korea
[2] Korea Res Inst Biosci & Biotechnol, Biol Resources Ctr, Taejon 305806, South Korea
关键词
BACTERIAL SYSTEMATICS; SEA; ROSEOBACTER; LEISINGERA; SEDIMENT;
D O I
10.1099/ijs.0.057646-0
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
A Gram-reaction-negative, aerobic, non-spore-forming, non-motile and rod-shaped or ovoid bacterial strain, designated SSK6-1(T), was isolated from the zone where the ocean and a freshwater spring meet at Jeju island, South Korea. Strain SSK6-1(T) grew optimally at 30 degrees C, at pH 7.0-7.5 and in the presence of 2.0% (w/v) NaCl. Phylogenetic trees based on 16S rRNA gene sequences revealed that strain SSK6-1(T) Clustered with Phaeobacter daeponensis TF-218(T) and Phaeobacter caeruleus LMG 24369(T), exhibiting sequence similarities of 98.6 and 98.3%, respectively. The novel strain exhibited sequence similarities of 94.6-97.8% to the type strains of other recognized species of the genera Phaeobacter and Leisingera. Strain SSK6-1(T) contained Q-10 as the predominant ubiquinone and C-18:1 omega 7c and 11-methyl C-18:1 omega 7c as the major fatty acids. The major polar lipids of strain SSK6-1(T) were phosphatidylcholine, phosphatidylglycerol, phosphatidylethanolamine, one unidentified aminolipid and one unidentified lipid. The DNA G+C content of strain SSK6-1(T) was 64.6 mol% and its DNA-DNA relatedness values with P. daeponensis TF-218(T) and P. caeruleus were 21 and 25%, respectively. The differential phenotypic properties, together with phylogenetic and genetic distinctiveness, revealed that strain SSK6-1(T) is Separate from recognized Phaeobacter species. On the basis of the data presented, strain SSK6-1(T). is considered to represent a novel species of the genus Phaeobacter, for which the name Phaeobacter aquaerrthrtae sp. nov. is proposed. The type strain is SSK6-1(T). (=KCTC 32538(T)=CECT 8399(T)).
引用
收藏
页码:1378 / 1383
页数:6
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