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Mycobacterium canariasense sp. nov.

¹ Laboratorio de Micobacterias, Servicio de Bacteriología, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
² Servicio de Microbiología, Hospital de Gran Canaria Dr Negrin, Las Palmas de Gran Canaria, Spain
³ Unitat de Microbiología, Departament de Genetica i de Microbiología, Universitat Autónoma de Barcelona, Bellaterra, Barcelona, Spain
⁴ Departamento de Medicina Preventiva, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain

Correspondence
M. Soledad Jiménez
msjimenz{at}isciii.es

A novel rapidly growing, non-pigmented mycobacterium was isolated from blood samples obtained from 17 patients with febrile syndrome. Bacterial growth occurred at 30 and 37 °C on Löwenstein–Jensen medium and also on MacConkey agar without crystal violet. Strains contained - and '-mycolates in their cell wall. Sequence analysis of the hsp65 and 16S rRNA genes identified the isolates as rapidly growing mycobacteria. Sequences of both genes were unique within the mycobacteria. DNA–DNA hybridization showed that the isolates had less than 15 % reassociation with 13 other recognized rapidly growing mycobacteria. The name Mycobacterium canariasense sp. nov. is proposed for this novel opportunistic pathogen, which is most closely related to Mycobacterium diernhoferi. The type strain is 502329^T (=CIP 107998^T=CCUG 47953^T).

Some characteristics of strain 502329^T (Table A), TLC of methyl mycolates of M. canariasense strains and related Mycobacterium species (Fig. A), GC analysis of fatty acid methyl esters of strain 502329^T (Fig. B), hybridization dot-blot assays (Fig. C) and DNA–DNA relatedness between strain 502329^T and other Mycobacterium species (Table B) are available as supplementary material in IJSEM Online.

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