A novel chitinolytic actinomycete isolated from a Brazilian cerrado soil, designated strain RCQ1071, was assigned to the genus on the basis of chemical and morphological characteristics. The almost-complete nucleotide sequence of the 16S rRNA gene of strain RCQ1071 was determined and also placed this strain in the genus . Phylogenetic analyses of 16S rRNA gene sequences showed that strain RCQ1071 formed a long branch in a group related to , sharing approximately 98 % sequence similarity. Levels of DNA–DNA relatedness between strain RCQ1071 and members of this group, namely DSM 40492, DSM 40635 and DSM 41793, were 38.3, 27.8 and 46 %, respectively, strongly indicating that strain RCQ1071 was not a member of any of these species. The relatively long branch length within a stable clade together with the phenotypic data strongly supported that strain RCQ1071 represented a novel species. Based on the combination of physiological, phylogenetic and genomic data, strain RCQ1071 is suggested to represent a novel species of the genus , for which the name sp. nov. is proposed. The type strain is RCQ1071 (=ATCC BAA-1231 =CIP 108852 =DSM 41876).


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vol. , part 12, pp. 2774 - 2778

Comparative phenotypic properties that separate sp. nov. RCQ1071 from the type strains of chitinolytic species. [PDF](136 KB)


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