一个层次的无处不在介导的调节模块控制着竹木木质素生物合成
Kebin Yang1,2,3, Ziyang Li1,2, Chenglei Zhu1,2
1Key Laboratory of State Forestry and Grassland Administration/Beijing on Bamboo and Rattan Science and Technology, Beijing 100102, China.
Plant physiology
|September 9, 2024
概括
这项研究揭示了凯尔奇重复F-box蛋白9 (PeKFB9) 如何通过准PePAL10进行降解来调节竹子中的红素生物合成. 这一发现有助于通过有针对性的育种改善竹木的木材特性.
科学领域:
- 植物生物学 植物生物学
- 生物化学 生物化学
- 生物技术是生物技术.
背景情况:
- 竹子的纤维素性使其成为木材的可持续替代品.
- 红素生物合成决定了竹子的材料特性.
- 竹子中氨酸生物合成的翻译后调节是不太了解的.
研究的目的:
- 调查莫索竹 (Phyllostachys edulis) 中的红素生物合成的翻译后调节.
- 确定关键的蛋白质和参与调节素积累的途径.
- 为提供Moso竹的无处不在数据集.
主要方法:
- 创建了一个Moso竹的ubiquitinome数据集,识别了无处不在的蛋白质和地点.
- 利用异质表达来研究已识别的蛋白质的功能.
- 进行了体外和体内测试,以确认蛋白质相互作用和降解途径.
- 使用促进体结合试验分析了转录调节.
主要成果:
- 在4849种蛋白质中确定了13015个无处不在的位.
- 发现凯尔奇重复F盒蛋白9 (PeKFB9) 作为素生物合成的负调节剂.
- 证明PeKFB9针对PePAL10通过26S蛋白酶体通路进行无化和降解.
- 表明PebZIP28667抑制了PePAL10的转录,而ubiquitination削弱了这种效应.
结论:
- 阐明了一种新的调节模块 (PeKFB9-PePAL10/PebZIP28667-PePAL10),可以控制竹子中的素生物合成.
- 对植物木质化中翻译后控制的高级理解.
- 提供了改善竹木特性和育种增强品种的基础.
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