Location: Crop Improvement and Genetics ResearchTitle: Bacterial pathogen genomics: liberibacters from around the world.
Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 12/1/2014
Publication Date: N/A
Technical Abstract: The fastidious prokaryote Candidatus Liberibacter solanacearum (Lso), transmitted by the tomato potato psyllid (Bactericera cockerelli), is associated with the Zebra Chip disease of potato. Plants infected with Liberibacter may experience significant yield losses and these plants also serve as potential reservoirs for Liberibacter to spread to other psyllid hosts with alternate crop feeding preferences, potentially introducing new epidemiological focal points among crops. New associations between Liberibacter species and crop plants have been detected in different parts of the world, presenting concerns about the potential roles of these strains in causing disease. Carrots (Daucus carota) showing damage from feeding of carrot psyllids (Trioza apicalis) were reported to be infected with Lso. Using sequence information generated from Lso positive psyllids collected in Finland, Norway and Sweden we have constructed a metagenomic map for this new Lso haplotype LsoC. We have compared the genomes of the LsoC to the closely related LsoB haplotype, the only Lso whose genome sequence is currently available. In addition differences between the Lso sequences derived from samples from each country were identified. These differences will aid in the monitoring of the regional populations.