博斯库5-BoARF8复合物通过菜中的BoUIF1-BoCUC2级联调节叶边缘的发展
Yuting Zhang1, Xin Feng1,2, Yang Liu1
1College of Forestry, Shenyang Agricultural University, Shenyang, 110866, China.
The Plant journal : for cell and molecular biology
|November 18, 2025
概括
甘氨基转移酶BoALG10通过N-glycosylating Skewed5 (SKU5) 促进了绿菜中的光滑叶边缘. 这种相互作用调节了辅酶信号传递和细胞壁修饰,揭示了植物发育和遗传改进的新途径.
科学领域:
- 植物生物学 植物生物学
- 分子遗传学 分子遗传学
- 生物化学 生物化学
背景情况:
- 叶子形状的变化对植物发育和光合作用至关重要.
- 甘氨基转移酶BoALG10与白菜中的光滑叶状特征有关 (Brassica oleracea var. 接受的意思).
- 在此之前,BoALG10在叶子发育中的作用的精确分子机制是未知的.
研究的目的:
- 阐明BoALG10影响叶子形状的分子机制.
- 确定与BoALG10相互作用的蛋白质及其在叶片边缘发育中的作用.
- 揭示调节绿菜中光滑叶边缘的遗传途径.
主要方法:
- 使用定量N-糖蛋白组学来比较BoALG10过度表达线与野生类型的菜.
- 用于检测BoSKU5.5上的N-糖化位点的功能,研究了位点定向的突变发生.
- 转录组测序 (RNA-Seq) 分析了BoSKU5突变后的基因表达变化.
- 酵母双杂交查确定了蛋白质相互作用,特别是BoSKU5和BoARF8.8之间的相互作用.
主要成果:
- 确定了由BoALG10对含有cupredoxin域的蛋白质Skewed5 (SKU5) 的N-glycosylation.
- 突变BoSKU5中的Asn-444糖化位点损害了其核定位和维持平滑叶边缘的功能.
- BoSKU5突变改变了辅酶信号和细胞壁修饰基因的表达.
- 通过调节BoUIF1.1,BoARF8被确定为一种相互作用的转录因子,通过调节BoUIF1.1,促进光滑的叶边缘.
- 博斯库5-BoARF8复合体增强了BoARF8-BoUIF1级联,抑制BoCUC2,这是一个关键的叶边缘调节器.
结论:
- 发现了一种新型分子模块 (BoSKU5/BoARF8-BoUIF1-BoCUC2),可以调节叶片边缘的发育.
- Skewed5 (SKU5) 通过与BoARF8的相互作用和下游基因的调节,在叶片边缘的发展中发挥着重要作用.
- 这项研究为叶子形状的遗传控制提供了关键的见解,并为植物的遗传改进提供了潜在的途径.
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