转录因子WRKY2和WRKY34控制了花粉植物细胞核中的LATERAL ORGAN BOUNDARIES DOMAIN10表达
Thu-Hien Nguyen1, Min Jung Kim2, Jungmook Kim1,2,3
1Department of Integrative Food, Bioscience and Biotechnology, Chonnam National University, Gwangju 61186, South Korea.
Plant physiology
|September 6, 2024
概括
研究人员确定了关键的DNA元素和转录因子WRKY2和WRKY34,这些元素和转录因子控制侧面器官边界DOMAIN 10 (LBD10) 基因表达,特别是在Arabidopsis花粉的植物细胞核 (VCN) 中.
科学领域:
- 植物分子生物学 植物分子生物学
- 基因规则 基因规则
- 游戏发生的过程 (Gametogenesis)
背景情况:
- 男性的游戏生成需要通过转录因子复杂的基因表达调节.
- 在Arabidopsis中,侧面器官边界域10 (LBD10) 对于花粉发育至关重要,但其在成熟花粉的植物细胞核 (VCN) 中的特定表达尚未完全理解.
研究的目的:
- 为了识别在Arabidopsis花粉成熟期间控制VCN中的LBD10表达的cis作用元素和trans作用因子.
- 阐明VCN特异性LBD10局部化背后的调节机制.
主要方法:
- 利用了与GUS或GFP报告员合并的LBD10促销器删除构造来识别关键促销器区域.
- 在Arabidopsis原生体和染色体免疫沉 (ChIP) 试验中使用过渡性基因表达试验.
- 分析了W-box图案及其与转录因子的相互作用.
主要成果:
- 在200bp区域内确定了两个关键的核心促进子序列,这些序列在起始编码子上游的200bp区域内,独立调节VCN表达.
- 在 -770 bp 的 W-box 动图对于在花粉成熟过程中激活植物细胞中的 LBD10 表达是必不可少的.
- 转录因子WRKY2和WRKY34被证明可以在LBD10促进器区域与W-box动机结合.
结论:
- 在LBD10促进体中,WRKY2和WRKY34与W盒动图的结合对于花粉中LBD10的VCN特异性表达至关重要.
- 这种调节相互作用有助于雄性性质细胞的发育,并提供了关于花粉成熟的调节网络的见解.
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