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在玉米和theosinte之间与耳朵相关的特征分歧的遗传剖析

Shenshen Wu¹, Han Zhang¹, Zhengfu Fang¹

¹National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China.

The Plant journal : for cell and molecular biology

|December 19, 2024

概括

玉米的化涉及到耳朵发育的重大变化. 这项研究确定了控制玉米耳朵特征的遗传因素,揭示了关键的基因和调节机制,如cis变异和硫代谢,影响了从theosinte.

科学领域:

植物遗传学植物遗传学
进化生物学是进化的生物学.
农业科学农业科学

背景情况:

玉米 (Zea mays) 从teosinte化导致了植物结构和耳朵形态的巨大变化.
对于这些耳朵形态差异的遗传基础的理解有限.

研究的目的:

调查玉米化期间与耳朵相关的特征的遗传基础.
为了确定基因和调节元件控制玉米和theosinte之间的耳朵形态的变化.

主要方法:

对玉米 x 茶辛特入侵种群 (Mo17 x 墨西哥) 的分析.
定量特征位点 (QTL) 绘制耳朵和花朵美里系统 (IM) 特征.
在发育中的耳朵中进行基因表达分析 (cis-和 trans-eQTL映射).
对监管热点进行丰富分析.

主要成果:

确定了31个耳朵和IM特征的QTL,其中27个是在化过程中进行选择的.
在选择过程中发现了关键的耳部发育基因 (例如,KN1,RA1).
证明cis变异在基因调节中的重要作用,并确定了众多的trans-eQTLs.
通过跨-eQTL热点发现了硫代谢途径在耳部特征控制中的潜在参与.

结论:

通过整合表达和表型数据,确定了影响耳朵发育的候选基因.
对于在玉米化过程中驱动耳朵特征变异的遗传结构的先进理解.
强调了在塑造玉米耳形态方面,cis和跨调节元素的重要性.

关键词:

墨西哥人墨西哥人我们的eQTL是eQTL.耳朵的特征耳朵的特征鲜花的花期梅里系梅里系玉米玉米玉米是一种

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