Journal of Integrative Agriculture ›› 2024, Vol. 23 ›› Issue (5): 1494-1506.DOI: 10.1016/j.jia.2023.10.036

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花生网斑病抗性候选基因的精细定位

  

  • 收稿日期:2023-07-31 接受日期:2023-09-25 出版日期:2024-05-20 发布日期:2024-04-23

Fine-mapping of a candidate gene for web blotch resistance in Arachis hypogaea L.

Xiaohui Wu1, 2*, Mengyuan Zhang4*, Zheng Zheng2#, Ziqi Sun2, Feiyan Qi2, Hua Liu2, Juan Wang2, Mengmeng Wang2, Ruifang Zhao2, Yue Wu2, Xiao Wang2, Hongfei Liu2, Wenzhao Dong2, Xinyou Zhang2, 3#    

  1. 1 College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China

    2 Henan Academy of Agricultural Sciences/Henan Academy of Crop Molecular Breeding/Key Laboratory of Oil Crops in Huang-Huai-Hai Plain, Ministry of Agriculture and Rural Affairs/Henan Provincial Key Laboratory for Oil Crop Improvement, Zhengzhou 450002, China

    3 The Shennong Laboratory, Zhengzhou 450002, China 4 Shangqiu Academy of Agricultural and Forestry Sciences, Shangqiu 476000, China

  • Received:2023-07-31 Accepted:2023-09-25 Online:2024-05-20 Published:2024-04-23
  • About author:Xiaohui Wu, E-mail: wuxiaohui8688@163.com; Mengyuan Zhang, E-mail: 1799753561@qq.com; #Correspondence Zheng Zheng, Tel: +86-373-7366696, E-mail: zheng.zheng@live.com; Xinyou Zhang, Tel: +86-371-65729560, E-mail: haasxinyou@163.com * These authors contributed equally to this study.
  • Supported by:
    This work was supported by the Key Research Project of the Shennong Laboratory, China (SN01-2022-03), the Henan Provincial Science and Technology R&D Program Joint Fund (Superiority Discipline Cultivation) Project, China (222301420100), the Major Science and Technology Projects of Henan Province, China (221100110300), the China Agriculture Research System of MOF and MARA (CARS-13), the Henan Provincial Agriculture Research System, China (S2012-5), the Outstanding Young Scientists of Henan Academy of Agricultural Sciences, China (2022YQ16), and the Independent Innovation Project of the Henan Academy of Agricultural Sciences, China (2023ZC093). 

摘要:

花生是全球重要的油料作物。网斑病是影响花生产量的重要叶面病害之一,在世界范围内造成严重的产量损失。培育抗斑病花生品种被认为是减少因网斑病造成的产量损失的最有效和经济可行的方法。在目前的研究中,采用下一代测序的批量分离分析BSA-seq方法分析了一个F2:3分离群体,并确定了与网斑病抗性相关的候选基因组区间。利用竞争等位基因特异性PCRKASP标记对候选基因组区间进行精细定位,在16号染色体上发现了一个新的网斑病抗性相关区间,全长约169 kb。该区域包含4个注释基因,其中只有Arahy.35VVQ3在两亲本之间的编码区存在非同义的单核苷酸多态性。与该基因连锁的两个标记(chr16.12872635Chr16.12966357)72个随机选择的RIL重组品系证明的花生网斑病抗性共分离,可用于花生品种的标记辅助育种。

Abstract: Peanut (Arachis hypogaea L.) is a globally important oil crop.  Web blotch is one of the most important foliar diseases affecting peanut, which results in serious yield losses worldwide.  Breeding web blotch-resistant peanut varieties is the most effective and economically viable method for minimizing yield losses due to web blotch.  In the current study, a bulked segregant analysis with next-generation sequencing was used to analyze an F2:3 segregating population and identify candidate loci related to web blotch resistance.  Based on the fine-mapping of the candidate genomic interval using kompetitive allele-specific PCR (KASP) markers, we identified a novel web blotch resistance-related locus spanning approximately 169 kb on chromosome 16.  This region included four annotated genes, of which only Arahy.35VVQ3 had a non-synonymous single nucleotide polymorphism in the coding region between the two parents.  Two markers (Chr.16.12872635 and Chr.16.12966357) linked to this gene were shown to be co-segregated with the resistance of peanut web blotch by 72 randomly selected recombinant inbred lines (RIL), which could be used in marker-assisted breeding of resistant peanut varieties.

Key words: peanut web blotch ,  bulked segregant analysis ,  KASP markers ,  resistant gene