GT1和ZmHB13/VRL1通过调节莉花生物合成和玉米信号来调节花朵的性别分化
Yateng Yuan1, Xiaotong Ou1, Minhao Yao1
1State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Laboratory for Lingnan Modern Agriculture, College of Life Sciences, South China Agricultural University, Guangzhou 510642, China.
Plant physiology
|February 19, 2025
概括
两种玉米转录因子,Grassy tiller1 (GT1) 和ZmHB13,通过调节士酸盐 (JA) 生物合成和信号通路,协同控制骨的发育. 它们的作用确保了花朵的适当发育,防止了玉米中过度肥沃的花朵.
科学领域:
- 植物分子生物学 植物分子生物学
- 发展生物学 发展生物学
- 遗传学 是一个遗传学.
背景情况:
- 玉米 (Zea mays L.) 是单一的,产生不同的雄性 () 和雌性 (耳朵) 花.
- 在玉米中单性花的发展的分子基础尚不清楚.
研究的目的:
- 在玉米中识别和描述控制 carpel 发育和花的性别决定的分子机制.
主要方法:
- 在家庭主体-氨酸拉链 (HD-ZIP) 转录因子中的突变的遗传分析.
- 对斯酸盐 (JA) 生物合成和信号基因的基因表达分析.
- 蛋白质与蛋白质相互作用研究和甲基莉酸盐 (MeJA) 治疗.
主要成果:
- 在 Grassy tiller1 (GT1) 中的突变导致由于受损的骨流产而导致女性化的.
- 双重突变的GT1和ZmHB13表现出更严重的缺陷,包括额外的肥沃的花朵在耳朵.
- GT1和ZmHB13直接激活JA生物合成基因 (ZmLOX3,ZmOPR7) 并与JA通路抑制剂 (ZmJAZ4,ZmJAZ26) 相互作用.
- MeJA应用程序在双重突变中拯救了女性化的毛表型.
结论:
- GT1和ZmHB13协同作用,调节玉米皮的发育.
- 这些转录因子通过调节莉花生物合成和信号通路来控制花朵的发育.
- 这些发现阐明了玉米中单性花朵发育的新型调节机制.
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