Paracoccus jeotgali sp. nov., isolated from Korean salted and fermented shrimp.

A Gram-stain-negative and facultatively aerobic bacterium, designated as strain CBA4604, was isolated from a traditional Korean salted and fermented shrimp food (saeu-jeot). Phylogenetic analysis based on 16S rRNA gene sequences showed that strain CBA4604 formed a clearly distinct phyletic lineage from closely related species within the genus Paracoccus. Strain CBA4604 was the most closely related to P. koreensis Ch05 (97.5% 16S rRNA gene sequence similarity) and other type strains (≤ 97.0%). The genome comprised a chromosome and two plasmids of 3,299,166 bp with 66.5% G+C content. The DNA-DNA relatedness values between strain CBA4604 and P. koreensis Ch05, P. alcaliphilus DSM 8512, and P. stylophorae KTW-16 were 30.5%, 22.9%, and 16.7%, respectively. Cells of the strain were short rod-shaped and oxidase- and catalase-positive. The growth of strain CBA-4604 was observed at 10-40°C (optimum, 37°C), pH 6.0-10.0 (optimum, pH 7.0), and in the presence of 0-8.0% (w/v) NaCl (optimum, 0-2.0%). Strain CBA4604 contained ubiquinone 10 as the sole isoprenoid quinone and summed feature 8 (Cω7c/Cω6c) and C as the major cellular fatty acids. The polar lipids consisted of phosphatidylcholine, phosphatidylglycerol, diphosphatidylglycerol, phospholipid, an unidentified aminolipid, an unidentified glycolipid, and three unidentified lipids. Based on its phylogenetic, genomic, phenotypic, and chemotaxonomic features, we concluded that strain CBA-4604 represents a novel species in the genus Paracoccus and we propose the name Paracoccus jeotgali sp. nov. The type strain is CBA4604 (= KACC 19579 = JCM 32510).