中国水稻科学 ›› 2020, Vol. 34 ›› Issue (4): 316-324.DOI: 10.16819/j.1001-7216.2020.9134

• 研究报告 • 上一篇    下一篇

金粳818抗咪唑啉酮类除草剂基因的功能标记开发与应用

王广达1, 高鹏1,2, 杨文艳1, 崔傲1, 赵剑华1, 冯志明1,2, 曹文磊1,2, 陈宗祥1,2, 左示敏1,2,*()   

  1. 1扬州大学 农学院 江苏省作物遗传生理重点实验室/植物功能基因组学教育部重点实验室/江苏省作物基因组学和分子育种重点实验室,江苏 扬州 225009
    2扬州大学 江苏省粮食作物现代产业技术协同创新中心,江苏 扬州 225009
  • 收稿日期:2019-12-13 修回日期:2020-02-19 出版日期:2020-07-10 发布日期:2020-07-10
  • 通讯作者: 左示敏
  • 基金资助:
    江苏省农业重大新品种创制项目(PZCZ201703);江苏省大学生创新创业项目(201911117114Y);江苏省重点研发计划资助项目(现代农业, BE2018351-1);江苏高校优势学科建设工程资助项目

Development and Utilization of Functional Markers for Imidazolinone Herbicides Resistance Gene in japonica Rice Variety Jinjing 818

Guangda WANG1, Peng GAO1,2, Wenyan YANG1, Ao CUI1, Jianhua ZHAO1, Zhiming FENG1,2, Wenlei CAO1,2, Zongxiang CHEN1,2, Shimin ZUO1,2,*()   

  1. 1Jiangsu Key Laboratory of Crop Genetics and Physiology / Key Laboratory of Plant Functional Genomics of Ministry of Education / Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, College of Agriculture, Yangzhou University, Yangzhou 225009, China
    2Jiangsu Collaborative Innovation Center for Modern Industrial Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China
  • Received:2019-12-13 Revised:2020-02-19 Online:2020-07-10 Published:2020-07-10
  • Contact: Shimin ZUO

摘要:

【目的】培育抗除草剂品种是水稻育种中的一个重要方向,开发高效的功能标记可以加快抗除草剂性状的筛选工作。【方法】利用开发的dCAPS和KASP分子标记对试验材料的基因型分型,另结合除草剂喷施试验进行表型鉴定。【结果】测序结果验证了前人发现的金粳818中乙酰乳酸合成酶(acetolactate synthase,ALS)基因第627位氨基酸由丝氨酸(serine,S)突变为天冬酰胺(asparagine,N)是其抗咪唑啉酮类除草剂的主要原因,本文将其命名为ALS627N。根据此变异位点的DNA序列差异,开发了两个新的功能标记dC-ALS-627和K-ALS-627,可有效区分ALS627N纯合型、杂合型及非突变纯合型。【结论】两个标记均可以广泛用于ALS627N基因的标记辅助选择育种,有助于加快培育抗咪唑啉酮类除草剂新品种,具有重要的实际应用价值。

关键词: 水稻, 咪唑啉酮类除草剂, 乙酰乳酸合成酶, 功能标记, 辅助选择

Abstract:

【Objective】Cultivating herbicide resistant rice varieties is an important direction in rice breeding. Developing efficient functional markers can accelerate the screening of herbicide resistance trait. 【Method】dCAPS and KASP techniques were used to analyze the genotypes of the experimental materials. In addition, the phenotypes were identified by herbicide spraying test. 【Result】Through sequence alignment analysis, we further confirmed that the mutation of 627 amino acid of acetolactate synthase (ALS) gene from serine (S) into asparagine (N) in Jinjing 818 (here after named ALS627N) produces strong resistance to imidazolinone herbicides. According to the DNA sequence flanking the mutation site, we developed two novel functional markers, dC-ALS-627 and K-ALS-627, for detecting this resistant allele ALS627N. The two markers can effectively distinguish homozygous ALS627N type, heterozygous type and homozygous wild type. Combined with herbicide spraying test, we confirmed that ALS627N is a dominant herbicide resistant gene. 【Conclusion】 We validated that the two markers have great potential in marker-assisted breeding for ALS627N gene. Totally, this study will accelerate the development of new varieties with resistance to imidazolinone herbicides, and have significance in breeding practice.

Key words: rice, imidazolinone herbicide, acetolactate synthase, functional marker, assisted selection

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