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Research Abstracts Online
January 2008 - March 2009

University of Minnesota Twin Cities
College of Food, Agricultural, and Natural Resource Sciences
Department of Plant Pathology

PI: Carol A. Ishimaru

Genomics of Plant Pathogenic Coryneform Bacteria

To provide genetic resources that could lead to a better understanding of pathogenicity and host specificity within coryneform plant pathogens generally, these researchers have focused on obtaining the complete genome sequence of Clavibacter michiganensis subsp. sepedonicus (Cms). This international and national quarantine pest causes bacterial ring rot, a destructive disease of potato. A specific objective of this work is to conduct whole genome comparisons between Cms and its plant pathogenic relatives, as a means of identifying putative pathogenicity-related genes. Because Cms thrives almost exclusively as a plant endophyte, comparative genome studies should also provide insights on aspects of niche adaptation. Whole genome comparisons are also being used to reveal genomic events associated with the evolution of host specificity and therefore subspeciation within C. michiganensis. Based on information from whole genome studies, the researchers are conducting functional genomic studies with the goal of demonstrating which genes are important in pathogenesis and latency.

Group Member

Ryan Syverson, Graduate Student