Affiliation:
1. Department of Laboratory Medicine, University of Minnesota, Minneapolis, Minnesota 55455
Abstract
Production of 5′-nucleotides by
Serratia marcescens
and
Enterobacter liquefaciens
correlates with deoxyribonuclease production, indicating the close relationship between these two organisms. To determine further relationships, susceptibilities of 279 strains of the tribe
Klebsielleae
were determined by the high-potency disc method, agar-dilution method, or both, by using 14 antibiotics. Ninety-seven per cent of
S. marcescens
(201 of 207 strains) and 100% of
E. liquefaciens
(17 strains) had minimum inhibitory concentration (MIC) of 100 μg/ml or greater with colistin and polymyxin B. With these two antibiotics, 93% of other
Enterobacter
species (28 strains) had MIC values of less than 1.6 μg/ml, and 100% of
Klebsiella
(27 strains) had MIC values less than 1.6 μg/ml. Consistent patterns were not noted with the other antibiotics tested, but the results with colistin and polymyxin B provide additional evidence of the close relationship of
S. marcescens
and
E. liquefaciens.
Publisher
American Society for Microbiology
Subject
General Pharmacology, Toxicology and Pharmaceutics,General Immunology and Microbiology,General Biochemistry, Genetics and Molecular Biology,General Medicine
Cited by
10 articles.
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