Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 3/10/2010
Publication Date: N/A
Technical Abstract: Multilocus variable number tandem repeat analysis (MLVA) is used for source tracking Escherichia coli O157:H7 in agricultural environments. Tandem repeats were stable after limited replication, but changed after irradiation, elevated temperatures and starvation conditions. Plasmid, pO157, was lost frequently under these stresses. Environmental stresses may increase phylogenetic diversity measured by MLVA.