GT1通过影响莉花通路来调节玉米的性别决定
Zhen Lin1, Jing Yang1, Shengnan Liu2
1State Key Laboratory of Maize Bio-breeding, Frontiers Science Center for Molecular Design Breeding, State Key Laboratory of Maize Bio-breeding, National Maize Improvement Center, Department of Plant Genetics and Breeding, China Agricultural University, Beijing, P. R. China.
The Plant journal : for cell and molecular biology
|July 14, 2025
概括
我们确定了GRASSY TILLERS1 (GT1) 是控制玉米子发育的基因. 该基因通过斯酸通路调节花的器官发育,影响玉米的性别决定.
科学领域:
- 植物遗传学 植物遗传学
- 发育生物学是发展生物学.
- 分子遗传学 分子遗传学
背景情况:
- 玉米 (Zea mays L.) 呈现出明显的男性 () 和女性 (耳) 花朵.
- 玉米的性别决定涉及复杂的遗传和发育信号通路.
研究的目的:
- 为了描述玉米的女性化头突变,tasselsilk1 (tsk1).
- 确定对TSK1突变负责的基因,并阐明它在玉米性别决定中的作用.
主要方法:
- 诱导突变的EMS突变发生.
- 对TSK1突变体的表型分析.
- RNA测序 (RNA-seq) 和CUT&Tag测试用于分析基因表达和蛋白质-DNA相互作用.
主要成果:
- 这种TSK1突变被映射到格拉西·蒂勒斯1 (GT1) 基因中.
- 突变者在头和耳朵中都出现了失败的尾流产,导致无菌的丝和额外的核.
- GT1通过调节素酸 (JA) 生物合成和信号通路,起到植物器官发育的抑制作用.
- GT1直接促进了TASSELSEED1 (TS1) 和ZmMYC2A/B的表达.
结论:
- 确定了GT1的一个新等位基因,证实了它在玉米性别决定中的作用.
- GT1通过调节JA生物合成和信号通路来调节玉米的性别决定,从而影响花器官的发育.
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