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1 Sunchon National University;
2 Korea Research Institute of Bioscience and Biotechnology
3 E-mail: scnu{at}scnu.ac.kr
A non-motile, coccobacilli-shaped and pale-pink pigmented bacterium, designated strain CW67T, isolated from a water-cooling system, Gwangyang, Republic of Korea. Cells were Gram-negative, catalase- and oxidase-positive. The major fatty acids were C18:1
7c (43.6 %) and C16:0 (15.8 %). The predominant respiratory lipoquinone was Q-10. The DNA G+C content was 69.5 mol%. A phylogenetic tree based on 16S rRNA gene sequence showed that strain CW67T forms an evolutionary lineage within the radiation enclosing the members of the genus Roseomonas and its nearest neighbor is Roseomonas gilardii subsp. rosea (94.7 % sequence similarity). Polyphasic evidence presented in this study indicated that strain CW67T could not be assigned to any recognized species; therefore a novel species is proposed, Roseomonas frigidaquae sp. nov. with CW67T (KCTC 22211T = JCM 15073T) as the type strain.
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