Mycobacterium arosiense sp. nov., a slowly growing, scotochromogenic species causing osteomyelitis in an immunocompromised child.
A yellow-pigmented, scotochromogenic, slowly growing mycobacterial strain, designated T1921(T), was isolated from the disseminated osteomyelitic lesions of a 7-year-old child with an underlying partial gamma interferon receptor alpha-1 deficiency. Hybridization by the line probe assay indicated the presence of a Mycobacterium species. Sequencing of the 16S rRNA gene, the internally transcribed spacer (ITS) region and the hsp65 and rpoB genes revealed that strain T1921(T) could be differentiated from all recognized species of the genus Mycobacterium. Phylogenetic analysis based on the 16S rRNA gene indicated that strain T1921(T) was related most closely to Mycobacterium intracellulare, whereas analysis based on the ITS and hsp65 and rpoB genes indicated that it was most closely related to Mycobacterium avium. Phenotypic tests were not able to differentiate strain T1921(T) from similar slowly growing mycobacteria. Strain T1921(T) is considered to represent a novel species of the genus Mycobacterium, for which the name Mycobacterium arosiense sp. nov. is proposed. The type strain is T1921(T) (=DSM 45069(T) =ATCC BAA-1401(T)).
International Reference Laboratory of Mycobacteriology and National Center for Antimicrobials and Infection Control, Statens Serum Institut, Artillerivej 5, DK-2300 Copenhagen, Denmark. DVB@ssi.dk
Didi
D
Bang
Troels
T
Herlin
Marc
M
Stegger
Aase Bengaard
AB
Andersen
Pirjo
P
Torkko
Enrico
E
Tortoli
Vibeke Ostergaard
VO
Thomsen
D015373:Bacterial Typing Techniques; D002648:Child; D004269:DNA, Bacterial / Q000235:genetics; D021903:DNA, Ribosomal Spacer / Q000235:genetics; D005227:Fatty Acids / Q000737:chemistry; D005260:Female; D005798:Genes, Bacterial; D020459:Genes, rRNA; D006801:Humans; D016867:Immunocompromised Host; D008826:Microbial Sensitivity Tests; D008969:Molecular Sequence Data; D009161:Mycobacterium / Q000737:chemistry / Q000145:classification* / Q000235:genetics* / Q000302:isolation & purification; D009164:Mycobacterium Infections / Q000276:immunology / Q000382:microbiology*; D010019:Osteomyelitis / Q000209:etiology / Q000382:microbiology*; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA
D004269:DNA, Bacterial; D021903:DNA, Ribosomal Spacer; D005227:Fatty Acids; D012336:RNA, Ribosomal, 16S