Document Title

Identification and Comparative Mapping of a Dominant Potyvirus Resistance Gene Cluster in Capsicum

Department/School

Biology

Abstract

The dominant gene Pvr7 from Capsicum chinense Jacq. ’PI159236’ confers resistance to the pepper mottle potyvirus (PepMoV) Florida (V1182) strain. This gene is tightly linked to the dominant potyvirus resistance gene Pvr4 with observed recombination frequencies of 0.012 to 0.016. A cleaved amplified polymorphic sequence (CAPS) marker linked to Pvr4 was used to localize Pvr4 and, by extension, Pvr7, to linkage group 10 on an interspecific map of pepper. Our results indicated that Pvr4, Pvr7, and Tsw, a gene conferring resistance to tomato spotted wilt virus, comprise the first identified cluster of dominant disease resistance genes in Capsicum L. This position does not correspond to the locations of dominant potyvirus resistance genes in potato or to the positions of any other mapped solanaceous resistance genes or resistance gene homologues.

Document Type

Article

Publication Title

Theoretical and Applied Genetics

Publication Date

10-1-2000

Volume

101

Pages

852-859

Digital Object Identifier (DOI)

10.1007/s001220051552

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