Description of Xanthomarina sediminis sp. nov. and Xanthomarina flava sp. nov., isolated from coastal sediment

Two Gram-stain-negative, non-motile and rod-shaped bacterial strains, designated F1114 ^T and F2636L ^T , were isolated from a coastal sediment sample collected from Jingzi Port, Weihai, China. The 16S rRNA gene sequence similarity between the two strains was 96.8%. Both strains shared the highest 16S rRNA gene sequence similarities with Xanthomarina spongicola KCTC 22662 ^T (94.9% and 96.2%, respectively). Phylogenomic analyses confirmed that strains F1114 ^T and F2636L ^T belong to the genus Xanthomarina . Based on the results of phylogenetic, phenotypic and chemotaxonomic data and genomic comparison, strains F1114 ^T and F2636L ^T could be distinguished from their closest taxa, representing two novel species of the genus Xanthomarina , for which the names Xanthomarina sediminis sp. nov. and Xanthomarina flava sp. nov. are proposed, respectively. The type strains are F1114 ^T (=KCTC 92650 ^T =MCCC 1H01355 ^T ) and F2636L ^T (=KCTC 92651 ^T =MCCC 1H01398 ^T ).