Rhodopirellula rosea sp. nov., a novel bacterium isolated from an ark clam Scapharca broughtonii
2013
Roh, Seong Woon | Lee, Hae-Won | Yim, Kyung June | Shin, Na-Ri | Lee, Jina | Whon, Tae Woong | Lim, Na-Lae | Kim, Daekyung | Bae, Jin-Woo
A novel Gram-negative, motile, and ovoid-shaped strain, LHWP3ᵀ, which belonged to the family Planctomycetaceae in the phylum Planctomycetes, was isolated from a dead ark clam Scapharca broughtonii collected during a mass mortality event on the south coast of Korea. Phylogenetic analysis based on the 16S rRNA gene sequences indicated that the isolate was most closely related to the type strain of Rhodopirellula baltica, with a shared 16S rRNA gene sequence similarity of 94.8%. The isolate grew optimally at 30°C in 4–6% (w/v) NaCl, and at pH 7. The major isoprenoid quinone was menaquinone-6 (MK-6). The dominant polar lipids were phosphatidylcholine, phosphatidylglycerol, phosphatidylethanolamine, and unidentified polar lipids. The predominant cellular fatty acids were C₁₆:₀, C₁₈:₁ ω9c, and C₁₈:₀. The genomic DNA G+C content of strain LHWP3ᵀ was 53.0 mol%. Based on polyphasic taxonomic analyses, strain LHWP3ᵀ should be classified as a novel species in the genus Rhodopirellula in the family Planctomycetaceae, for which the name Rhodopirellula rosea sp. nov. is proposed. The type strain is LHWP3ᵀ (=KACC 15560ᵀ =JCM 17759ᵀ).
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