Actinomadura maheshkhaliensis sp.nov.,a novel actinomycete isolated from mangrove rhizosphere soil of Maheshkhali,Bangladesh

摘要

The taxonomic position of one soil isolate 13-12(50)~T was clarified by a polyphasic study.The organism showed a combination of chemotaxonomic and morphological properties typical of the genus Actinomadura.It formed a distinct phyletic line in the Actinomadura 16S rRNA gene tree and was closely associated with Actinomadura mexicana(sequence similarity 99.5%),Actinomadura glauciflava,Actinomadura citrea(sequence similarity 99.4%)and Actinomadura madurae(sequence similarity 99.2%).The result of DNA-DNA hybridizations between 13-12(50)~T and Actinomadura mexicana was 49.9%.On the basis of the phenotypic,chemotaxonomic and genotypic properties,the isolate was differentiated from its closest phylogenetic relatives.It is proposed that the organism be classified as a novel species of the genus Actinomadura.The name proposed for the new taxa are Actinomadura maheshkhaliensis sp.nov.[(13-12(50)~T=JCM 13934~T = MTCC 8055~T].