Late blight is a devastating tomato disease. Breeding new varieties with multiple resistance () genes is highly effective for preventing late blight. The gene mediates resistance to race T in tomato. In this study, we used an F population derived from a cross between Moboline (resistant) and LA3988 (susceptible) cultivars for the fine mapping of . Two flanking markers, CAPS-1 and CC-Ase, mapped to a 141-kb genomic region containing 21 projected genes, 5 of which were identified as putative genes. The coding sequence varied significantly between the parents. The markers developed and candidate genes identified in this study shall be useful for the molecular breeding of tomato exhibiting increased late blight resistance and for the cloning of the gene.

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http://dx.doi.org/10.1094/PDIS-03-19-0679-REDOI Listing

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