Mycolicibacterium stellerae sp. nov., a rapidly growing scotochromogenic strain isolated from Stellera chamaejasme

Nouioui, Imen, Sangal, Vartul, Cortés-Albayay, Carlos, Jando, Marlen, Igual, José Mariano, Klenk, Hans-Peter, Zhang, Yu-Qin and Goodfellow, Michael (2019) Mycolicibacterium stellerae sp. nov., a rapidly growing scotochromogenic strain isolated from Stellera chamaejasme. International Journal of Systematic and Evolutionary Microbiology, 69 (11). pp. 3465-3471. ISSN 1466-5026

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Abstract

A polyphasic study was undertaken to establish the taxonomic provenance of a rapidly growing Mycolicibacterium strain, CECT 8783T, recovered from the plant Stellera chamaejasme L. in Yunnan Province, China. Phylogenetic analyses based upon 16S rRNA and whole-genome sequences showed that the strain formed a distinct branch within the evolutionary radiation of the genus Mycolicibacterium . The strain was most closely related to Mycolicibacterium moriokaense DSM 44221T with 98.4 % 16S rRNA gene sequence similarity, but was distinguished readily from this taxon by a combination of chemotaxonomic and phenotypic features and by low average nucleotide identity and digital DNA–DNA hybridization values of 79.5 and 21.1 %, respectively. Consequently, the strain is considered, to represent a novel species of Mycolicibacterium for which the name Mycolicibacterium stellerae sp. nov is proposed; the type strain is I10A-01893T (=CECT 8783T=KCTC 19843T=DSM 45590T).

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