Affiliation:
1. Department of Bacteriology, Iowa State University, Ames, Iowa
Abstract
Lockhart
, W. R. (Iowa State University, Ames),
and Karen Koenig
. Use of secondary data in numerical taxonomy of the genus
Erwinia
. J. Bacteriol.
90:
1638–1644. 1965.—Numerical methods were used to study 34 bacterial cultures, including several species of
Erwinia
and selected representatives of other genera of the Enterobacteriaceae. Separate computations were made by use of varying amounts of secondary data (i.e., information regarding descriptive or quantitative characters applicable only to organisms yielding a positive result in another primary character). Substantially the same groupings of the test organisms were obtained in all computations, but definition of groups seemed to be more precise when secondary data were included. The results confirm proposals by other workers that
E. carotovora, E. aroideae, E. atroseptica
, and
E. ananas
be placed in a single species, separate from
E. amylovora
. Limited evidence suggests that
E. nimipressuralis
and
E. chrysanthemi
may be distinct species, and that some strains of
E. amylovora
are not very similar either to one another or to other members of the Enterobacteriaceae.
Publisher
American Society for Microbiology
Subject
Molecular Biology,Microbiology
Reference16 articles.
1. Experimental methods in computer taxonomy;BEERS R. J.;J. Gen. Microbiol.,1962
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3. Numerical survey of some bacterial taxa;FOCHT D. D.;J. Bacteriol.,1965
4. Complexity and dependence in computer taxonomy;KENDRICK W. B.;Taxon,1965
5. Scoring of data and group formation in quantitative taxonomy;LOCKHART W. R.;Develop. Ind. Microbiol.,1964
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