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 WW3 T forms an independent lineage within the genus Altererythrobacter. Strain WW3 T was related distantly to Altererythrobacter dongtanensisJM27 T and Altererythrobacter troitsensisKMM 6042 T (97.1% 16S rRNA gene sequence similarity). DNA-DNA relatedness between strain WW3 T and the reference strains was low (30-41 %). The major fatty acids of strain WW3 T were C17 : 1ω6c, C17 : 1ω8c, C15 : 0 2-OH and summed feature 8 comprising C18 : 1ω6c and/or C18 : 1ω7c. The predominant isoprenoid quinone of the isolate was ubiquinone-10. The DNA G+C content of strain WW3 T was 63 mol%. Phenotypic characteristics distinguished strain WW3 T from related species of the genus Altererythrobacter. On the basis of the evidence presented in this study,strain WW3 T 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 ).