Cloacibacterium caeni sp. nov., isolated from activated sludge.
A Gram-stain-negative, facultatively anaerobic bacterium, designated B6T, was isolated from activated sludge of a wastewater treatment plant in South Korea. Cells were oxidase- and catalase-positive and non-motile rods producing yellow carotenoid-type pigments. Growth of B6T was observed at 20-40 °C (optimum, 37 °C) and pH 6.6-8.2 (optimum, pH 7.0) and in R2A broth supplemented with 0-1 % (w/v) NaCl (optimum, 0 %). B6T contained iso-C15 : 0 as the major fatty acid. Menaquinone-6 was detected as the sole respiratory quinone. The G+C content of the genomic DNA of B6T was 31.5 mol%. The results of phylogenetic analysis based on 16S rRNA gene sequences indicated that B6T formed a tight phylogenetic lineage with members of the genus Cloacibacterium. B6T was most closely related to Cloacibacterium rupense R2A-16T (99.0 %), Cloacibacterium normanense NRS1T (98.7 %) and Cloacibacterium haliotis WB5T (97.4 %), but their DNA-DNA relatedness levels were less than 42.0 %. On the basis of phenotypic, chemotaxonomic and molecular properties, it is clear that B6T represents a novel species of the genus Cloacibacterium, for which the name Cloacibacterium caeni sp. nov. is proposed. The type strain is B6T (=KACC 18988T=JCM 31714T).
Department of Life Science, Chung-Ang University, Seoul 06974, Republic of Korea.
Byung Hee
BH
Chun
Department of Life Science, Chung-Ang University, Seoul 06974, Republic of Korea.
Yunhee
Y
Lee
Freshwater Bioresources Utilization Division, Nakdonggang National Institute of Biological Resources, Gyeongsangbuk-do 37242, Republic of Korea.|Department of Life Science, Chung-Ang University, Seoul 06974, Republic of Korea.
Hyun Mi
HM
Jin
Department of Life Science, Chung-Ang University, Seoul 06974, Republic of Korea.
Che Ok
CO
Jeon
D015373:Bacterial Typing Techniques; D001482:Base Composition; D004269:DNA, Bacterial / Q000235:genetics; D005227:Fatty Acids / Q000737:chemistry; D041965:Flavobacteriaceae / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D009693:Nucleic Acid Hybridization; D010802:Phylogeny; D010858:Pigmentation; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D056910:Republic of Korea; D017422:Sequence Analysis, DNA; D012722:Sewage / Q000382:microbiology*; D024482:Vitamin K 2 / Q000031:analogs & derivatives / Q000737:chemistry
D004269:DNA, Bacterial; D005227:Fatty Acids; D012336:RNA, Ribosomal, 16S; D012722:Sewage; D024482:Vitamin K 2; C042455:menaquinone 6