米ins(3) P合成酶1 (RINO1) 通过调节因诺醇相关的奥克辛合成变化及其分布,参与胚胎发育
Lujian Zhou1, Yiqin Xiong1, Muhammad-Asad-Ullah Asad1
1Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China.
Physiologia plantarum
|March 26, 2024
概括
由于胚胎发育受损,低植物酸 (LPA) 米的种子发芽不佳. 在RINO1淘汰赛大米中减少的植物酸会破坏细胞分化和辅酶信号传递,影响胚胎生长和发芽的成功.
科学领域:
- 植物生物学 植物生物学
- 农作物科学 农作物科学
- 分子遗传学 分子遗传学
背景情况:
- 低植物酸 (LPA) 的作物增强营养价值,但通常显示种子发芽减少.
- 植物酸 (InsP) 是植物种子中主要的储存化合物.
- 工程LPA作物向的基因包括内醇-3-酸盐合成酶1 (RINO1).
研究的目的:
- 研究RINO1淘汰赛大米中减少的植物酸 (InsP6) 含量对种子胚胎发育的影响.
- 为了阐明myo-inositol代谢,auxin信号传递和LPA大米中的胚胎发生之间的关系.
- 为了了解LPA大米中亚最佳种子发芽的原因.
主要方法:
- 分析RINO1淘汰赛大米同胞细胞在胚胎发生过程中的细胞分化.
- 在种子胚胎中测量脂酸 (PI) 度.
- 研究肌肉中毒醇和英多尔-3-酸 (IAA) 对胚胎表型的影响.
主要成果:
- RINO1淘汰的同胞体启动了分化,但未能形成正常的和根原体.
- 失去RINO1的功能导致PI的减少,并破坏了囊泡贩运和辅酶信号传递.
- 外源性内醇和IAA部分挽救了异常胚胎表型,改善了发育.
结论:
- 在米中,RINO1对于种子植物酸 (InsP6) 生物合成和正常胚胎发育都至关重要.
- 减少的酸 (4,5) - 双酸盐 (PI (4,5) P2) 和无序的辅酶分布会损害胚胎发生.
- 在RINO1淘汰胚胎中,受损的myo-inositol供应是异常发育和发芽失败的关键因素.
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