Streptomyces coriariae sp. nov., a novel streptomycete isolated from actinorhizal nodules of Coriaria intermedia

An actinobacterial strain, CMB- FB, was isolated from surface- sterilized root nodules of a Coriaria intermedia plant growing along Halsema Highway in the province of Benguet (Luzon, Philippines). The 16S rRNA gene sequence of CMB- FB showed high sequence similarity to those of the type strains of Streptomyces rishiriensis (99.4%), Streptomyces humidus (99.1 %), Streptomyces cacaoi subsp. asoensis (99.0 %), and Streptomyces phaeofaciens (98.6 %). The major menaquinones of CMB- FB were composed of MK- 9(H4), MK-9(H6) and MK- 9(H8), and there was a minor contribution of MK- 9(H10). The polar lipid profile consisted of phosphatidylethanolamine, unidentified aminolipids and phospholipids, a glycophospholipid and four unidentified lipids. The diagnostic diamino acid of the peptidoglycan was meso- diaminopimelic acid. The major fatty acids were iso- C16:0, anteiso-C15: 0 and anteiso-C17:0. The results of physiological analysis indicated that CMB- FB was mesophilic. The results of phylogenetic, genome- genome distance calculation and average nucleotide identity analysis indicated that the isolated strain represents the type strain of a novel species. On the basis of these results, strain CMB- FB (=DSM 112754T=LMG 32457T) is proposed as the type strain of the novel species Streptomyces coriariae sp. nov.