Analysis of Chromobacterium sp. natural isolates from different Brazilian ecosystems.

ABSTRACT:

Background

Chromobacterium violaceum is a free-living bacterium able to survive under diverse environmental conditions. In this study we evaluate the genetic and physiological diversity of Chromobacterium sp. isolates from three Brazilian ecosystems: Brazilian Savannah (Cerrado), Atlantic Rain Forest and Amazon Rain Forest. We have analyzed the diversity with molecular approaches (16S rRNA gene sequences and amplified ribosomal DNA restriction analysis) and phenotypic surveys of antibiotic resistance and biochemistry profiles.

Results

In general, the clusters based on physiological profiles included isolates from two or more geographical locations indicating that they are not restricted to a single ecosystem. The isolates from Brazilian Savannah presented greater physiologic

SUBMITTER: Lima-Bittencourt CI 

PROVIDER: S-EPMC1913517 | biostudies-literature | 2007 Jun

REPOSITORIES: biostudies-literature