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Numerical classification of Rhodococcus equi and related actinomycetes
Author(s) -
Goodfellow M.,
Beckham A.R.,
Barton M.D.
Publication year - 1982
Publication title -
journal of applied bacteriology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 0021-8847
DOI - 10.1111/j.1365-2672.1982.tb04677.x
Subject(s) - rhodococcus , rhodococcus equi , corynebacterium , taxon , jaccard index , nocardia , biology , numerical taxonomy , microbiology and biotechnology , strain (injury) , cluster analysis , taxonomy (biology) , bacteria , genetics , mathematics , zoology , statistics , botany , anatomy , gene , virulence
Eighty‐three strains received as Corynebacterium or Rhodococcus equi and marker cultures of Corynebacterium and Rhodococcus species were subjected to numerical phenetic analyses using 112 unit characters. The data were examined using the simple matching ( S SM ) and Jaccard ( S J ) coefficients and clustering was achieved using the average linkage algorithm. Cluster composition was not markedly affected by the coefficient used or by test error, estimated at 2.9%. Most of the strains received as R. (C.) equi formed a distinct and homogeneous cluster in the aggregate Rhodococcus taxon, the strains of which were sharply separated from marker cultures of C. pseudotuberculosis and C. renale. The taxon R. equi was redescribed and Nocardia calcarea Metcalf & Brown reduced to a subjective synonym of R. erythropolis (Gray & Thornton) Goodfellow & Alderson.