Determination of chromosome size and number of rrn loci in Lactobacillus plantarum by pulsed-field gel electrophoresis
- PMID: 7914501
- DOI: 10.1111/j.1574-6968.1994.tb07006.x
Determination of chromosome size and number of rrn loci in Lactobacillus plantarum by pulsed-field gel electrophoresis
Abstract
The size of the Lactobacillus plantarum CCM 1904 chromosome was determined by pulse-field gel electrophoresis. It was found to be 3.3-3.4 Mb using SfiI or AscI restriction endonucleases, compared to 3-4 Mb found for the other L. plantarum strains tested. L. plantarum CCM 1904 5S rDNA was clonedl by polymerase chain reaction, sequenced, and used as a probe to characterize strains. At least five rrn loci were found. The pulsed-field gel electrophoresis macrorestriction patterns were strain-specific, while the rDNA restriction hybridization patterns were species-specific.
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