Gene-based molecular marker system for multiple disease resistances in tomato against Tomato yellow leaf curl virus, late blight, and verticillium wilt

作者：Jung Jungsu; Kim Hyun Jung; Lee Je Min; Oh Chang Sik; Lee Hyung Jin; Yeam Inhwa^*

来源：Euphytica, 2015, 205(2): 599-613.

DOI：10.1007/s10681-015-1442-z

• Solanum lycopersicum
• Functional markers
• Allele-specific markers
• SNP
• HRM

Marker assisted selection (MAS) for disease resistance is widely applied in practical tomato breeding programs in the public and private sectors. Due to its commercial value and importance as a model crop, tomato has taken the lead in MAS among the horticultural crops. Tomato yellow leaf curl virus, which is transmitted by the whitefly (Bemisia tabaci), is a major threat to tomato production worldwide. The Ty1 and Ty3 resistance loci originated from Solanum chilense LA1969 and LA1932/LA2779, respectively. Recently, the gene responsible for Ty1 resistance was identified as a DFDGD-class RNA-dependent RNA polymerase and was demonstrated to be allelic with Ty3 resistance. The Ph3 resistance locus from S. pimpinellifolium (L3708), which confers incomplete resistance against a widerange of Phytophthora infestans isolates, is considered the most effective source of resistance against tomato late blight. A coiled-coil nucleotide-binding leucine-rich repeat gene on chromosome 9 was determined to be responsible for Ph3 resistance. Resistance against verticillium wilt diseases in tomato is conferred by the Ve locus that contains two closely linked, inversely oriented genes: Ve1 and Ve2. The Ve locus provides resistance against Verticillium alboatrum race 1 and encodes an extracellular leucine-rich repeat receptor-like protein class of disease resistance proteins. We developed reliable and comprehensive molecular markers based on either the single nucleotide polymorphisms or insertions/deletions directly responsible for the resistance provided by the Ty1, Ph3, and Ve1 loci. These gene-based functional molecular markers are expected to enhance the effectiveness and accuracy of MAS for disease resistance in tomato breeding programs.

• 出版日期2015-9