gen. nov., sp. nov. and gen. nov., sp. nov., two bacteria isolated from coral , and proposal of fam. nov.

The is one of the dominant bacterial phyla in corals. However, the exact taxa of those coral bacteria under the are still unclear. Two aerobic, Gram-stain-negative, non-motile rods, designated strains BMA10 and BMA12, were isolated from stony coral collected from Weizhou Island, PR China. Global alignment of 16S rRNA gene sequences indicated that both strains are closest to species of with the highest identities being lower than 93 %, and the similarity value between these two strains was 92.3 %. Phylogenetic analysis based on 16S rRNA gene and genome sequences indicated that these two strains form an monophylogenetic lineage alongside the families , , , , , and in the order , phylum . The genomic DNA G+C contents of BMA10 and BMA12 were 38.4 and 41.9 mol%, respectively. The major polar lipids of BMA10 were phosphatidylethanolamine, unidentified aminophospholipid, four unidentified aminolipids, and five unidentified lipids. While those of BMA12 were phosphatidylethanolamine, two unidentified aminolipids, and five unidentified lipids. The major cellular fatty acids detected in both isolates were iso-C and C 5. Carbohydrate-active enzyme analysis indicated these two strains may utilize coral mucus or chitin. Based on above characteristics, these two strains are suggested to represent two new species in two new genera of a new family in the order , for which the name gen. nov., sp. nov., gen. nov., sp. nov. and fam. nov. are proposed. The type strain of is BMA10 (=MCCC 1K08300=KCTC 102045), and that for is BMA12 (=MCCC 1K08309=KCTC 102046).