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. 2015 Feb;65(Pt 2):656-662.
doi: 10.1099/ijs.0.068395-0. Epub 2014 Dec 8.

Characterization of 17 strains belonging to the Mycobacterium simiae complex and description of Mycobacterium paraense sp. nov

Ana R Fusco da Costa  1 , Tarcisio Fedrizzi  2 , Maria L Lopes  1 , Monica Pecorari  3 , Wana L Oliveira da Costa  1 , Elisabetta Giacobazzi  2 , Jeann R da Costa Bahia  1 , Veronica De Sanctis  2 , Karla V Batista Lima  1 , Roberto Bertorelli  2 , Antonella Grottola  3 , Anna Fabio  3 , Alessandro Mariottini  4 , Pamela Ferretti  2 , Francesca Di Leva  2 , Giulia Fregni Serpini  3 , Sara Tagliazucchi  3 , Fabio Rumpianesi  3 , Olivier Jousson  2 , Nicola Segata  2 , Enrico Tortoli  5
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Characterization of 17 strains belonging to the Mycobacterium simiae complex and description of Mycobacterium paraense sp. nov

Ana R Fusco da Costa et al. Int J Syst Evol Microbiol. 2015 Feb.

Abstract

Fourteen mycobacterial strains isolated from pulmonary samples of independent patients in the state of Pará (Brazil), and three strains isolated in Italy, were characterized using a polyphasic approach. Thorough genetic investigation, including whole-genome sequencing, demonstrated that the strains belong to the M. simiae complex, being most closely related to Mycobacterium interjectum. For 14 of the strains, evidence emerged supporting their inclusion in a previously unreported species of the genus Mycobacterium, for which the name Mycobacterium paraense sp. nov. is proposed (type strain, IEC26(T) = DSM 46749(T) = CCUG 66121(T)). The novel species is characterized by slow growth, unpigmented or pale yellow scotochromogenic colonies, and a HPLC mycolic acid profile different from other known mycobacteria. In different genetic regions, high sequence microheterogeneity was detected.

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