sp. nov. and sp. nov., isolated from tidal flats in the Yellow Sea in Korea.

Two bacterial strains (designated as YSTF-M11 and TSTF-M6) were isolated from tidal flat sediments of the Yellow Sea, Republic of Korea, and taxonomically characterized. A neighbour-joining phylogenetic tree based on 16S rRNA gene sequences showed that strain YSTF-M11 clusters with the type strains of species and strain TSTF-M6 clusters with the type strains of , and . Strains YSTF-M11 and TSTF-M6 exhibited 16S rRNA gene sequence similarity values of 97.5-98.9 % and 94.1-97.2 % to the type strains of four species and to the type strains of four species, respectively. An UBCG tree based on genomic sequences and a tree based on AAI showed that strains YSTF-M11 and TSTF-M6 form a cluster with the type strains of species and with the type strains of , and , respectively. The ANI and dDDH values between genomic sequences of strain YSTF-M11 and the type strains of four species and between those of strain TSTF-M6 and the type strains of the three species were in ranges of 74.0-75.9 and 18.2-19.7 % and 74.7-75.5 and 18.8-19.3 %, respectively. The DNA G+C contents of strains YSTF-M11 and TSTF-M6 were 60.3 and 61.9 % based on their genomic sequences. Both strains contained Q-10 as the predominant ubiquinone and C 7 as the major fatty acid. Strains YSTF-M11 and TSTF-M6 were separated from recognized species and , and , respectively, by their phenotypic properties together with the phylogenetic and genetic distinctiveness. Based on data presented in this study, strains YSTF-M11 (=KACC 21642 =NBRC 115155) and TSTF-M6 (=KACC 21643 =NBRC 115154) are considered to represent novel species of the genera and , respectively, for which the names sp. nov. and sp. nov. are proposed.