Two novel, Gram-stain-positive, rod-shaped, halotolerent bacteria, strains JG 03T and JG 05 were isolated from the rhizosphere of Salicornia brachiata, an extreme halophyte. Comparative analyses of 16S rRNA gene sequences showed that they were closely related to members of the genus Zhihengliuella, with sequence similarities of 96.9–99.1 %. The sequence similarity of strains JG 03T and JG 05 with each other was 99.4 %. DNA–DNA hybridization of JG 03T and JG 05 with other species of the genus Zhihengliuella with validly published names showed reassociation values of 19.8 %–53.4 % and a value of 91.4 % between each other. The peptidoglycan type of both strains was A4α and MK-9 and MK-10 were the predominant menaquinones. The predominant fatty acid in JG 03T was anteiso-C15 : 0 and anteiso-C17 : 0. However, iso-C15 : 0, anteiso-C15 : 0 and anteiso-C17 : 0 were the major fatty acids in strain JG 05. The DNA G+C content of strains JG 03T and JG 05 was 70.0 and 70.1 mol%, respectively. In nutrient broth medium both strains grew at NaCl concentrations of up to 15 % (w/v). On the basis of chemotaxonomic characteristics and phylogenetic analyses, strains JG 03T and JG 05 should be affiliated to the genus Zhihengliuella. Strains JG 03T and JG 05 represent a novel species of the genus Zhihengliuella for which the name Zhihengliuella somnathii sp. nov. is proposed. The type strain is JG 03T ( = DSM 23187T = IMCC 253T).
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