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Population genetics of Escherichia coli in a natural population of native Australian rats by Gulietta M. Pupo; Ruiting Lan; Peter R. Reeves; Peter R. Baverstock is a Environmental Science article available to read on EtoBox.

What is Population genetics of Escherichia coli in a natural population of native Australian rats about?

__Escherichia coli__, a normal inhabitant of the intestinal tract of mammals and birds, is a diverse species. Most studies on __E. coli__ populations involve organisms from humans or human‐associated animals. In this study, we undertook a survey of __E. coli__ from native Australian mammals, predominantly __Rattus tunneyi__, living in a relatively pristine environment in the Bundjalung National Park. The genetic diversity was assessed and compared by multilocus enzyme electrophoresis (MLEE), sequence analysis of the __mdh__ (malate dehydrogenase) gene and biotyping using seven sugars. Ninety‐nine electrophoretic types were identified from the 242 isolates analysed by MLEE and 15 sequences from the __mdh__ genes sequenced from 21 representative strains. The Bundjalung isolates extend the diversity represented by the __E. coli__ reference (ECOR) set, with new MLEE alleles found in six out of 10 loci. Many of the Bundjalung isolates fell into a discrete group in MLEE. Other Bundjalung strains fell into the recognized __E. coli__ ECOR set groups, but tended to be at the base of both the MLEE and __mdh__ gene trees, implying that these strains are derived independently from ancestral fo

Who reads Population genetics of Escherichia coli in a natural population of native Australian rats?

Author

Gulietta M. Pupo; Ruiting Lan; Peter R. Reeves; Peter R. Baverstock

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley (ISSN 1462-2912)

Published

2000

Language

EN

Field

Environmental Science (Physical Sciences)