植物谱系中CEPR1的功能:谷物作物 ортолог的激素识别和大麦的发育作用
Katia Taylor1,2, Richard Dixon3, Michael Taleski1
1Research School of Biology, Australian National University, Canberra, ACT, Australia.
Journal of experimental botany
|July 15, 2025
概括
谷物C-TERMINALLY ENCODED PEPTIDE RECEPTOR1 (CEPR1) 基因恢复了Arabidopsis cepr1突变表型,显示了保留的功能. 大麦CEPR1调节根结构和繁殖,这表明CEPR1通路可以改善谷物作物.
科学领域:
- 植物分子生物学 植物分子生物学
- 植物激素信号传递器
- 进行比较的基因组学.
背景情况:
- C-终端编码 (CEP) 激素及其受体CEP受体1 (CEPR1) 调节植物生长和Arabidopsis的环境反应.
- 与二叶相比,谷物具有不同的解剖特征,这引发了关于CEPR1功能保存的疑问.
研究的目的:
- 为了研究谷物CEPR1的功能,在单一子中进行了正确的研究.
- 为了确定单一的CEPR1是否可以拯救Arabidopsis cepr1突变表型.
- 阐明大麦CEPR1在根部发育和繁殖中的作用.
主要方法:
- 使用与大麦,大米或玉米CEPR1基因转换的Arabidopsis cepr1突变体进行补充试验.
- 在CRISPR-Cas9基因编辑中,创造了大麦CEPR1的淘汰突变.
- 分析根系架构,植物发育和生育现象型.
- 植物CEPR1和CEP蛋白之间的物种间相互作用测定.
主要成果:
- 单种CEPR1基因成功地恢复了Arabidopsis cepr1突变体中的根,芽和种子表型,以及CEP DOWNSTREAM 1表达.
- 大麦cepr1突变体表现出改变的根结构 (更的种子根,更窄的成熟系统) 和生育能力的严重缺陷.
- 阿拉比多普西斯CEPR1表现出更喜欢与阿拉比多普西斯CEP3相互作用,而大麦CEPR1则与阿拉比多普西斯和大麦CEP相互作用.
结论:
- 谷物CEPR1的正经体具有功能CEP受体活性.
- 大麦CEPR1在根系发育和繁殖成功中起着至关重要的作用.
- CEPR1信号通路代表了增强谷物作物的根结构的潜在目标.
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