Altererythrobacter rigui sp nov., isolated from wetland freshwater

A non-motile and yellow-pigmented bacterium, designated strain WW3(T), was isolated from freshwater of Woopo wetland, Republic of Korea. Cells were Gram-reaction-negative, aerobic, catalase-positive and oxidase-negative. A maximum-likelihood phylogenetic tree based on 16S rRNA gene sequences showed that strain WW3T forms an independent lineage within the genus Altererythrobacter. Strain WW3T was related distantly to Altererythrobacter dongtanensisJM27(T) and Altererythrobacter troitsensisKMM 6042(T) (97.1% 16S rRNA gene sequence similarity). DNA- DNA relatedness between strain WW3T and the reference strains was low (30-41 %). The major fatty acids of strain WW3T were C(17:1 omega)6c, C(17:1 omega)8c, C-15:0 2 -OH and summed feature 8 comprising C-18:1 omega 6c and/or C-18:1 omega 7c. The predominant isoprenoid quinone of the isolate was ubiquinone-10. The DNA G+C content of strain WW3T was 63 mol%. Phenotypic characteristics distinguished strain WW3T from related species of the genus Altererythrobacter. On the basis of the evidence presented in this study,strain WW3T represents a novel species of the genus Altererythrobacter, for which the name Altererythrobacter rigui sp. nov. is proposed. The type strain is WW3(T) (=KCTC 42620(T) =JCM 30975(T)).