Dyella jiangningensis sp. nov., a γ-proteobacterium isolated from the surface of potassium-bearing rock.

A Gram-stain-negative, aerobic, motile with one polar flagellum γ-proteobacterium, designated strain SBZ3-12(T), was isolated from surfaces of weathered potassic trachyte. Phylogenetic analysis of this strain based on 16S rRNA gene sequences showed that it was most closely related to Dyella japonica XD53(T) (97.9% 16S rRNA gene sequence similarity), Dyella terrae JS14-6(T) (97.7%), Dyella soli JS12-10(T) (97.5%) and Dyella koreensis BB4(T) (97.0%). The DNA G+C content of strain SBZ3-12(T) was 64.0 mol%. In addition, iso-C(17:1)ω9c, iso-C(15:0) and iso-C(16:0) were the major cellular fatty acids and ubiquinone Q-8 was the predominant respiratory quinone. The low DNA-DNA relatedness values between strain SBZ3-12(T) and recognized species of the genus Dyella and the many phenotypic properties supported the classification of strain SBZ3-12(T) as a representative of a novel species of the genus Dyella, for which the name Dyella jiangningensis sp. nov. is proposed. The type strain is SBZ3-12(T) ( =CCTCC AB 2012160(T) =KACC 16539(T) =DSM 26119(T)).