Mycobacterium camsae sp. nov. and Mycobacterium pumcae sp. nov., two species isolated from human skin infection

TL;DR

Scientists discovered two new species of Mycobacterium bacteria from human skin infections in China.

Contribution

The study introduces two new Mycobacterium species, M. camsae and M. pumcae, based on genomic and phenotypic analyses.

Findings

Two new Mycobacterium species were identified from human skin lesions in China.

Genomic analysis confirmed they are distinct from M. gordonae and other related species.

Abstract

Two slow-growing nontuberculous mycobacterial strains were isolated from clinical skin lesions in Jiangsu, PR China, and identified as novel species within the genus Mycobacterium. The bacterial colonies exhibited scotochromogenic pigmentation and rod-shaped morphology, and they were classified as acid-fast bacilli. Phylogenetic analysis indicated that the two strains were closely related to Mycobacterium gordonae. The two strains, X7091T and Z3061T, exhibited average nucleotide identity and in silico DNA–DNA hybridization values below the threshold for species delineation when compared with other type strains of M. gordonae complex. Therefore, two novel Mycobacterium species are proposed: Mycobacterium camsae sp. nov., with the type strain being X7091T (=CGMCC 1.90336T=JCM 37414T), and Mycobacterium pumcae sp. nov., with the type strain being Z3061T (=CGMCC 1.90337T=JCM 37415T).

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