基变异和FaMYB10-2的光响应调节是草中组织特异性安托西亚宁积累的基础
Huazhao Yuan1, Chao Wang2, Feiyue Quan3
1Institute of Pomology, Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement/Zhongshan Biological Breeding Laboratory, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China.
Plant physiology
|December 19, 2025
概括
草果的颜色是由FaMYB10-2等位基因和上游因素调节的. 遗传变异和光信号解释了组织特定的色素,为作物改进提供了目标.
科学领域:
- 植物遗传学和分子生物学
- 改善水果作物作物的改善.
- 农业科学 农业科学
背景情况:
- 安西是草 (Fragaria × ananassa) 果实特征的关键,如颜色,营养和弹性.
- 草的组织特异性色素 (红色皮肤,白的肉) 尽管存在复杂的遗传和环境影响,但人们对其了解甚微.
研究的目的:
- 剖析草中容器色素化背后的调节机制.
- 识别控制安东生物合成和水果颜色变化的遗传因素.
主要方法:
- 在200种草品种中进行了综合基因组,转录组和功能分析.
- 挖掘FaMYB10-2等位基因,识别促进体结构变异 (SV) 和表达特征.
- 调节性相互作用测定和对光响应因子的表征 (FaHYH-FaWRKY71级联).
主要成果:
- 确定了FaMYB10-2作为水果安东生物合成的主要R2R3-MYB调节剂.
- 具有主导性的负抑制性等位基因 (FaMYB10-2.2,FaMYB10-2.3) 和与白水果相关的 cis-调节性促进体 SV 的特征.
- 一种对光敏感的级联 (FaHYH-FaWRKY71) 激活了FaMYB10-2,对基因表达产生了依赖于哈普类型的效应.
结论:
- 一个多层监管系统控制草果的颜色,涉及基变异, cis-regulatory分歧和环境信号.
- 了解这些机制为工程改进多化作物的水果颜色提供了目标.
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