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在玉米化和改进过程中,粉分支酶的遗传多样化

Qi Li¹, Tiantian Yang¹, Wenye Rui¹

¹Jiangsu Key Laboratory of Crop Genetics and Physiology/Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Agricultural College of Yangzhou University, Yangzhou 225009, China.

|May 27, 2023

概括

了解玉米粉分枝酶 (ZmSBE) 基因是改善粉质量的关键. 基因分析揭示了与粉特性相关的ZmSBE基因变异,为标记器辅助育种提供了潜力.

科学领域:

植物遗传学植物遗传学
生物化学生物化学
玉米育种玉米育种玉米育种

背景情况:

粉粘合和凝化特性对玉米质量至关重要,影响料和工业应用.
粉分支酶 (SBE),由ZmSBE基因编码,是玉米粉生物合成的关键组成部分.

研究的目的:

通过分析ZmSBE基因,研究粉性质的遗传基础.
为了确定与玉米中粉物理化学性质相关的遗传变异.

主要方法:

在同系,地系和神系中重新测序ZmSBEI,ZmSBEIIa,ZmSBEIIb和ZmSBEIII.
核酸多态性和哈普洛型多样性分析.
标记-特征关联分析以确定显著的位置和变异.

主要成果:

在玉米化和改良过程中观察到ZmSBE基因选择模式的显著差异.
22个显著的位点,包括18个SNP和4个indel,与玉米粉的物理化学特性有关.
对ZmSBEIIb中SNP17249C的等位基因频率分析揭示了不同玉米系中ZmSBEIIb中SNP17249C的独特模式.

结论:

ZmSBE基因对玉米粉物理化学性质的表型变异有显著的贡献.
已识别的基因变异有可能开发功能性标记物来提高玉米粉质量.

关键词:

协会分析协会分析分析链接不平衡关系不平衡玉米玉米玉米是一种粉分支酶分支的酶是什么粉粘合和凝化的特性.

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Plant Breeding and Biotechnology

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Crop cultivation has a long history in human civilization, with records showing the cultivation of cereal plants beginning at around 8000 BC. This early plant breeding was developed primarily to provide a steady supply of food.