1887

Abstract

A novel Gram-stain-positive actinobacterium, designated HT7-17, was isolated from a sediment sample collected from the estuary of the Tama River, Japan, and its taxonomic position was investigated using a polyphasic approach. Phylogenetic analysis based on 16S rRNA gene sequence comparisons revealed that strain HT7-17 was closely related to members of the genus , with a similarity range of 97.1–98.2 %. The peptidoglycan type of strain HT7-17 was A4α, the predominant menaquinone was demethylmenaquinone DMK-9(H) and the major fatty acids were anteiso-C, C and iso-C. The DNA G+C content was 69.9 mol%. These chemotaxonomic features corresponded to those of the genus . Meanwhile, the differences in some phenotypic characteristics, along with the result of DNA–DNA hybridization, indicated that strain HT7-17 should be distinguished from the recognized species of the genus . Therefore, strain HT7-17 represents a novel species of the genus , for which the name sp. nov. is proposed. The type strain is HT7-17 (=NBRC 112286=TBRC 7037).

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2017-09-01
2020-12-01
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