Fine Mapping of the Ph-2 Gene Conferring Resistance to Late Blight (Phytophthora infestans) in Tomato
文献类型： 外文期刊
作者： Zhi, Xiaona 1 ; Shu, Jinshuai 1 ; Zheng, Zheng 2 ; Li, Tao 1 ; Sun, Xiaorong 1 ; Bai, Jinrui 1 ; Cui, Yanan 1 ; Wang, Xia 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Vegetables & Flowers, Beijing 100081, Peoples R China
2.Henan Acad Agr Sci, Inst Ind Crops, Zhengzhou 450002, Henan, Peoples R China
关键词： candidate genes; fine mapping; late blight; Ph-2; tomato
期刊名称：PLANT DISEASE （ 影响因子：4.438； 五年影响因子：4.7 ）
ISSN： 0191-2917
年卷期： 2021 年 105 卷 4 期
页码：
收录情况： SCI
摘要： Late blight is a devastating tomato disease. Breeding new varieties with multiple resistance (R) genes is highly effective for preventing late blight. The Ph-2 gene mediates resistance to Phytophthora infestans race T-1 in tomato. In this study, we used an F-2 population derived from a cross between Solanum lycopersicum Moboline (resistant) and LA3988 (susceptible) cultivars for the fine mapping of Ph-2. Two flanking markers, CAPS-1 and CC-Ase, mapped Ph-2 to a 141-kb genomic region containing 21 projected genes, 5 of which were identified as putative R genes. The Solyc10g085460 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 Ph-2 gene.
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