Laboratory of Genetics, University of Wisconsin - Madison, Madison, WI, USA.
Results Probl Cell Differ. 2024;73:73-86. doi: 10.1007/978-3-031-62036-2_4.
Plasmodesmata are conduits in plant cell walls that allow neighboring cells to communicate and exchange resources. Despite their central importance to plant development and physiology, our understanding of plasmodesmata is relatively limited compared to other subcellular structures. In recent years, technical advances in electron microscopy, mass spectrometry, and phylogenomics have illuminated the structure, composition, and evolution of plasmodesmata in diverse plant lineages. In parallel, forward genetic screens have revealed key signaling pathways that converge to regulate plasmodesmatal transport, including chloroplast-derived retrograde signaling, phytohormone signaling, and metabolic regulation by the conserved eukaryotic Target of Rapamycin kinase. This review summarizes our current knowledge of the structure, evolution, and regulation of plasmodesmatal transport in plants.
胞间连丝是植物细胞壁中的通道，允许相邻细胞进行通讯和交换资源。尽管它们对植物的发育和生理至关重要，但与其他亚细胞结构相比，我们对胞间连丝的了解相对有限。近年来，电子显微镜、质谱和系统发生基因组学方面的技术进步，揭示了不同植物谱系中胞间连丝的结构、组成和进化。与此同时，正向遗传学筛选揭示了关键的信号通路，这些信号通路汇聚在一起调节胞间连丝的运输，包括叶绿体衍生的逆行信号、植物激素信号以及保守的真核雷帕霉素靶蛋白激酶的代谢调节。本文综述了我们目前对植物胞间连丝运输的结构、进化和调控的认识。
