单细胞和空间奥米克揭示了种子植物中西发育复杂性的逐渐丧失
Peng Shuai1,2, Jo-Wei Allison Hsieh3,4, Chung-Ting Kao5
1College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
The Plant cell
|October 18, 2025
概括
这项研究揭示了体育种子中的体发育,显示了保存的辐射系统,但复杂的轴系系统. 研究结果表明,血管发育的减少进化是从体类转变为血管类.
科学领域:
- 植物生物学 植物生物学
- 发展生物学 发展生物学
- 进化生物学 进化生物学
背景情况:
- 二次生长对于种子植物至关重要,产生二次,地球上最丰富的组织.
- 雄发育系在雄种类 (eudicots,magnoliids) 中已知,但在雄种类中尚不清楚.
研究的目的:
- 阐明高精子体的体发育和进化轨迹.
- 为了比较体育种子的西发育与血管种子的发育.
主要方法:
- 针叶树 (Cunninghamia lanceolata) 体细胞的单细胞转录组.
- 使用Seurat和scVI.VI进行跨物种整合.
- 多模式空间框架 (转录组学,蛋白组学,代谢组学) 用于验证.
主要成果:
- 在C. lanceolata.中重建了体分化轨迹.
- 在种子植物中确认了保存的辐射系统和复合轴系统架构.
- 鉴定出一个独特的体育种子西细胞群,表明了血统特定的专业化.
结论:
- 健种的体结构比以前认为的要复杂得多.
- 提出了从体育种子到血管种子的轴向发育程序的渐进简化.
- 突出了种子植物血管发育的减少进化.
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