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GhMYB30-GhMUR3 影响棉花中的纤维延长和二次壁厚度

Aimin Wu^1,2, Boying Lian², Pengbo Hao²

¹College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430000, Hubei, China.

The Plant journal : for cell and molecular biology

|November 21, 2023

概括

GhMYB30通过控制GhMUR3来调节棉花纤维的发育,GhMUR3是氧黄糖合成的关键酶. 这种相互作用影响纤维延长和细胞壁加厚,揭示了棉纤维生长机制的新见解.

科学领域:

植物生物学植物生物学
分子生物学分子生物学
生物化学生化学

背景情况:

草甘对于植物细胞壁结构和延长至关重要.
草甘在棉纤维发育中的特定作用尚未完全理解.
GhMUR3 是一种对合成至关重要的西糖银转移酶,在棉纤维延长过程中高度表达.

研究的目的:

调查 GhMUR3 在棉纤维发展中的作用.
阐明 GhMYB30 和 GhMUR3.3 之间的监管关系.
在棉纤维开发中确定由 GhMYB30 规范的下游途径.

主要方法:

棉花中的基因过度表达和沉默.
酵母单杂交 (Y1H),双化酶和电泳性移动性转移试验 (EMSA) 对于蛋白质-DNA相互作用.
转录组分析和对蛋白质的差异积累与测序 (DAP-seq) 用于全基因组目标识别.

主要成果:

过度表达GhMUR3增强了棉纤维的延长和细胞壁的加厚.
GhMYB30 直接与 GhMUR3 促进体结合并激活其表达.
GhMYB30 调节多种途径,包括细胞壁合成,黄蛋白信号传递,活性氧物种和非常长链脂肪酸合成,并抑制 GhMYB46 的表达.

结论:

由GhMYB30调控的GhMUR3对于棉纤维延长和二次细胞壁加厚至关重要.
GhMYB30 作为棉纤维发育的关键调节剂,通过抑制 GhMYB46.6 部分影响二次壁合成.

关键词:

在 GhMUR3 里,GhmUR3 已经成为了 GhMUR3 的核心.这是GhMYB30的.纤维延长延伸的方法二次壁的加厚使其变得更加厚.高地棉花,高地棉花.

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