PROPOSAL OF CRAUROCOCCUS-ROSEUS GEN. NOV., SP. NOV. AND PARACRAUROCOCCUS-RUBER GEN. NOV., SP. NOV., NOVEL AEROBIC BACTERIOCHLOROPHYLL-A-CONTAINING BACTERIA FROM SOIL

Sequences of the 16S rRNA gene were determined for three strains of ae robic bacteriochlorophyll a-containing bacteria isolated from soil. Th e sequences of two strains (NS89(T) and NS102) were identical for appr oximately 1500 nucleotides. Phylogenetic analysis revealed that the th ree strains belonged to the alpha-1 subclass of the Proteobacteria, co nstituting one line of descent. The three strains are comparatively re lated to Roseococcus thiosulfatophilus, which is an aerobic bacterioch lorophyll a-containing bacterium. The 16S rRNA gene sequence similarit y and the DNA-DNA relatedness allow the proposal of two new genera, Cr aurococcus gen. nov. and Paracraurococcus gen, nov. The type species a re Craurococcus roseus sp. nov, and Paracraurococcus ruber sp. nov., a nd their type strains are NS130(T) (=JCM 9933(T)) and NS89(T) (=JCM 99 31(T)), respectively.