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Research Project: Resources for the Genetic Improvement of Potato

Location: Vegetable Crops Research

Title: Discovery of new sources of disease resistance using wild potato germplasm

Author
item Halterman, Dennis
item Jansky, Shelley
item Spooner, David

Submitted to: American Journal of Potato Research
Publication Type: Proceedings
Publication Acceptance Date: 3/18/2016
Publication Date: 6/1/2017
Citation: Halterman, D.A., Jansky, S.H., Spooner, D.M. 2017. Discovery of new sources of disease resistance using wild potato germplasm. American Journal of Potato Research. 94(3):211-250. doi: 10.1007/s12230-017-9581-5.

Interpretive Summary:

Technical Abstract: Microorganisms that cause plant diseases present a substantial burden to agriculture through yield losses due to plant stress, costs associated with disease control, and efforts to detect infections and limit disease epidemics. Plant breeders are interested in the identification and incorporation of simply inherited genes that confer robust resistance to diseases. These resistance genes typically encode proteins that recognize the presence of very specific pathogen molecules, termed effectors, resulting in the activation of defense responses. However, deletion or mutation of effectors can allow individuals in pathogen populations to elude recognition, cause disease, and pass this advantage on to subsequent generations. For this reason, we are continuously in need of new sources of host resistance. In potato we are fortunate to have a readily accessible source of germplasm that includes wild relatives of cultivated potato. Due to their coevolution with pathogens in their native environments, these wild species provide a vast resource of resistance to economically important diseases. This talk will be focused on efforts to utilize germplasm resources for disease resistance screening and how identified germplasm can be used for breeding future generations of disease resistant potato varieties.