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The division between fast- and slow-growing species corresponds to natural relationships among the mycobacteria.

By D A Stahl and J W Urbance

Abstract

Comparative 16S rRNA sequencing was used to infer the phylogenetic relationships among selected species of mycobacteria and related organisms. The phylogeny inferred reflects the traditional classification, with major branches of the phylogenetic tree in general correspondence to the four Runyon groups and with numerical classification analyses. All the mycobacterial species compared, with the exception of M. chitae, are closely related (average similarity values greater than 95%). The slow growers form a coherent line of descent, distinct from the rapid growers, within which the overt pathogens are clustered. The distant relationship between M. chitae and the remaining mycobacteria suggests that this organism is incorrectly classified with the mycobacteria. M. paratuberculosis 18 was indistinguishable from M. avium-M. intracellulare-M. scrofulaceum serovar 1 by this analysis

Topics: Research Article
Year: 1990
DOI identifier: 10.1128/jb.172.1.116-124.1990
OAI identifier: oai:pubmedcentral.nih.gov:208408
Provided by: PubMed Central
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