塑局部化的ZmENR1/ZmHAD1复合体通过调节脂质和ROS代谢来确保玉米花粉和粉的发展
Shaowei Zhang1,2, Xueli An1,2,3, Yilin Jiang1,2
1Research Institute of Biology and Agriculture, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
Nature communications
|December 31, 2024
概括
一个关键的玉米基因,ZmENR1,通过调节塑体中的新脂肪酸生物合成,对男性生育至关重要. 这一途径对于体皮层和花粉外形成至关重要,影响植物繁殖.
科学领域:
- 植物生殖生物学 植物生殖生物学
- 分子遗传学 分子遗传学
- 脂质新陈代谢 脂质新陈代谢
背景情况:
- 脂质代谢对于植物的雄性繁殖至关重要.
- 遗传男性不育 (GMS) 通常涉及脂相关的基因在壁纸.
- 在GMS的塑中新脂肪酸生物合成的作用尚不清楚.
研究的目的:
- 识别参与塑性新型脂肪酸生物合成的新型GMS基因.
- 阐明ZmENR1在玉米男性生育中的功能.
- 调查控制体发育和花粉形成的监管网络.
主要方法:
- 基因映射用于克隆ZmENR1基因.
- 生物化学试验用于研究蛋白质相互作用 (ZmENR1和ZmHAD1).
- 基因表达分析以了解调节途径 (ZmMS1反循环).
主要成果:
- 鉴定了玉米突变Enr1在面膜发育,体皮质和花粉突变中存在缺陷.
- 克隆ZmENR1,编码一个塑局部化的乙烯基乙烯载体蛋白 (ACP) 减少酶,对男性生育至关重要.
- ZmENR1与ZmHAD1相互作用,以促进新的脂肪酸合成.
- 发现了一个调节ZmENR1/ZmHAD1复合体的ZmMS1介导的反循环.
- 米和阿拉比多普西斯中的ZmENR1同类物也会影响男性的生育能力,这表明功能得到保护.
结论:
- ZmENR1 是一个关键的GMS基因,它调节了面塑中的新脂肪酸生物合成.
- 在ZmMS1的控制下,ZmENR1/ZmHAD1通路对于体皮膜和花粉外形成至关重要.
- 这条通路代表了在开花植物中雄性繁殖的保存机制.
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