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大规模的单细胞干细胞概况识别了芽发育和产量特征变化的冗余调节者

Xiaosa Xu¹, Michael Passalacqua², Brian Rice³

¹Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA; Department of Plant Biology, University of California, Davis, Davis, CA 95616, USA.

Developmental cell

|August 27, 2025

概括

研究人员使用单细胞RNA测序在玉米和阿拉比多普西斯中发现了植物干细胞的关键调节剂. 这种进步有助于了解和改造作物以获得更好的产量.

科学领域:

植物生物学
基因组学
发育生物学

背景情况:

植物芽干细胞对于器官发育至关重要,影响食物和生物燃料的生产.
之前的单细胞分析在分离罕见的干细胞和识别关键调节剂 (如CLAVATA3和WUSCHEL) 方面遇到了挑战.

研究的目的:

优化单细胞RNA测序 (scRNA-seq) 协议,以捕获玉米和阿拉比多普西斯中的罕见干细胞及其调节剂.
识别物种中保存的干细胞调节剂,并研究它们在发芽过程中的作用.
利用单细胞分析和基因变异数据进行作物工程,特别针对谷物产量.

主要方法:

用干细胞丰富的玉米和阿拉比多普西斯芽组织的剖析.
单细胞RNA测序 (scRNA-seq) 协议的优化.
干细胞调节物的跨物种比较分析.
用空间转录学进行玉米干细胞突变的分析和验证.
将大规模单细胞分析与基变异分析结合起来.

主要成果:

成功恢复了数千个表达CLAVATA3和WUSCHEL的细胞.
在玉米和阿拉比多普西斯中发现了深度保存的干细胞调节剂.
发现了包括RNA结合蛋白和糖激酶基因家族在内的新型调节剂.
建立了与谷物产量组成部分相关的干细胞调节体的等位变异联系的资源.

结论:

优化的scRNA-seq协议可以对植物干细胞和调节剂进行全面分析.
保存的调节体和新发现的基因家族提供了对基本干细胞生物学的见解.
这项研究为合理的作物工程提供了基础,以提高农业生产力.

关键词:

结合RNA的蛋白质跨物种分析植物芽干细胞一个细胞RNA-seq 干细胞突变干细胞调节器糖类激酶产量组成部分的特征

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