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通过单核酸多态 (SNP) 检测和基因定型的进步来改善小麦,特别强调抗性

Subramaniam Geethanjali^1,2, Palchamy Kadirvel³, Sambasivam Periyannan^4,5

¹Centre for Plant Molecular Biology and Biotechnology, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, 641003, India.

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik

|September 16, 2024

概括

单核酸多态性 (SNP) 标记物正在彻底改变小麦的育种,特别是提高耐性. 这些先进的标记物能够有效选遗传特征,加速改进小麦品种的发展.

科学领域:

植物遗传学和育种.
农业中的分子标记物
小麦基因组学小麦基因组学

背景情况:

单核酸多态 (SNP) 标记物对于识别和利用小麦重要的农学特征至关重要.
在小麦中已经确定了超过2.6亿个SNP,这得益于基因组测序和组装方面的进步.
随着SNP阵列的开发和成本效益高的基因型识别方法的发展,SNP的发现和应用得到了加速.

研究的目的:

审查SNP标记在小麦育种中的历史发展和未来前景.
突出SNP标记在提高小麦抗性方面的特殊应用.
讨论先进测序技术在SNP生成和利用中的作用.

主要方法:

利用小麦加入和野生亲属的全基因组测序 (WGS).
采用各种SNP数组 (9K到820K) 和生殖质子特定的数组进行基因定型.
集成的竞争性等位基特异性PCR (KASP) 试验用于大规模SNP查.
利用下一代测序和对比基因组分析进行SNP发现.

主要成果:

超过50个与抗性相关的基因位点已经使用SNP标记物进行了表征.
SNP标记器为小麦的标记器辅助育种提供了一个强大的工具.
测序技术的进步为人工SNP生成提供了新的途径.

结论:

SNP标记器是现代小麦育种不可或缺的工具,提供高吞吐量和精度.
它们的应用对于开发具有对不断演变的生病原体耐久性的小麦品种尤其重要.
在SNP发现和应用方面不断的创新将对全球粮食安全产生重大影响.

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