基于全基因组芯片开发水稻HRM特异分子标记
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深圳市作物分子设计育种研究院/深圳市分子设计育种重点实验室, 深圳 518107;,广西壮族自治区农业科学院水稻研究所/广西水稻遗传育种重点实验室,南宁 530007,深圳市作物分子设计育种研究院/深圳市分子设计育种重点实验室, 深圳 518107;,深圳市作物分子设计育种研究院/深圳市分子设计育种重点实验室, 深圳 518107;,深圳市作物分子设计育种研究院/深圳市分子设计育种重点实验室, 深圳 518107;,深圳市作物分子设计育种研究院/深圳市分子设计育种重点实验室, 深圳 518107;,广西壮族自治区农业科学院水稻研究所/广西水稻遗传育种重点实验室,南宁 530007

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国家科技资源共享服务平台项目“国家野生稻种质资源平台(南宁)”(NICGR2017-39);广西壮族自治区主席科技资金项目“野生稻优异基因的挖掘和利用研究”(1517-03);广西农业科学院基本科研业务专项项目“野生稻资源保护与利用研究”(2015YT14)


Development of HRM Molecular Markers of Rice Through the Method of Gene Chip Technique
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Shenzhen Institute of Molecular Crop Design/Shenzhen Key Laboratory of Molecular Design Breeding, Shenzhen 518107;,Rice Research Institute of Guangxi Academy of Agricultural Sciences/Guangxi Key Laboratory of Rice Genetics and Breeding, Nanning 530007,Shenzhen Institute of Molecular Crop Design/Shenzhen Key Laboratory of Molecular Design Breeding, Shenzhen 518107;,Shenzhen Institute of Molecular Crop Design/Shenzhen Key Laboratory of Molecular Design Breeding, Shenzhen 518107;,Shenzhen Institute of Molecular Crop Design/Shenzhen Key Laboratory of Molecular Design Breeding, Shenzhen 518107;,Shenzhen Institute of Molecular Crop Design/Shenzhen Key Laboratory of Molecular Design Breeding, Shenzhen 518107;,Rice Research Institute of Guangxi Academy of Agricultural Sciences/Guangxi Key Laboratory of Rice Genetics and Breeding, Nanning 530007

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    摘要:

    植物中广泛分布着单核苷酸多态性(SNP)位点。在此基础上发展而来的SNP标记因其具有高分辨率和共显性等优点,已成为当前作物遗传研究重要的分子工具。本研究拟建立基于高分辨率熔解曲线(HRM)技术的SNP分子标记,从而实现对栽培稻和野生稻的高效基因分型,为今后水稻的基因挖掘、品种鉴定以及分子育种等提供可靠、快捷的技术工具。利用水稻全基因组9K SNP芯片对栽培稻品种黄华占和野生稻Y605进行扫描,寻找两者之间的SNP位点,并将其开发成基于HRM技术的特异分子标记。然后,利用这些分子标记对亲本黄华占、野生稻Y605以及两者的BC3回交群体进行分子检测,以验证其有效性。水稻9K基因芯片在黄华占与野生稻Y605之间总共找到了4,198个SNP位点,它们在12条染色体上较均匀分布。在水稻第1号染色体上随机挑选出5个SNP位点开发成基于HRM技术的特异分子标记。利用这些标记对黄华占与野生稻Y605的BC3F1和BC3F2群体进行检测分析,发现它们都能准确区分亲本的纯合与杂合基因型。并且,在回交后代的第1号染色体ZY1-1~ZY1-4标记区间检测到野生稻片段插入。水稻全基因组9K SNP芯片可以很好地应用于水稻SNP标记的开发。开发的SNP特异标记能准确、高效地对栽培稻和野生稻进行基因分型。进一步完成基于HRM技术的水稻全基因组SNP标记的开发,可为今后野生稻的分子遗传研究、有利基因挖掘和育种应用提供高效的分子检测手段。

    Abstract:

    Single nucleotide polymorphism (SNP) sites are widely distributed in plants. SNPs-based markers have become an important molecular tool for crop genetic research due to their high resolution and co-dominant. This study aims to develop SNP molecular markers based on high resolution melting (HRM) technology and to estimate their genotyping efficiency between cultivated rice and wild rice, providing a reliable, simple and rapid tool for gene discovery, variety identification and molecular breeding in rice in the future. Genome-wide scanning of SNPs were performed between the cultivar Huanghuazhan and wild rice Oryza rufipogon Griff. Y605 using the rice 9K SNP microarray. Then we selected and developed HRM technology-based specific molecular markers from these SNPs. These molecular markers were subsequently used for genotyping of BC3 backcrossed populations with their parents Huanghuazhan and Oryza rufipogon Griff. Y605 to verify their validity. A total of 4,198 SNPs were found between Huanghuazhan and wild rice Y605 by the rice genome 9K SNP microarray, almost evenly distributed on all the chromosomes. Then 5 SNPs were randomly selected from the first, chromosome to develop HRM technology-based specific molecular markers. These markers were accurate and efficient in genotypeing of BC3F1 and BC3F2 populations of Huanghuazhan and wild rice Y605, as well as the homozygous parents and F1 heterozygous. In addition, the wild rice fragments was detected in the ZY1-1~ZY1-4 marker interval of the first chromosome of the backcross. The genome-wide rice 9K SNP microarray can be well applied to the development of SNP markers in rice. The developed specific SNP markers can be accurately and efficiently utilized in genotyping cultivated rice and wild rice. Further development of genome-wide rice SNP markers based on HRM technology will provide an efficient molecular detection tool for molecular genetic research, favorable genes discovery and breeding applications of wild rice.

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金名捺,潘英华,丘式浚,等.基于全基因组芯片开发水稻HRM特异分子标记[J].植物遗传资源学报,2018,19(6):1055-1063.

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  • 收稿日期:2018-04-29
  • 最后修改日期:2018-05-25
  • 录用日期:2018-06-22
  • 在线发布日期: 2018-11-14
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