Abstract Cell-to-cell communication is crucial in coordinating diverse biological processes in multicellular organisms. In plants, communication between adjacent cells occurs via nanotubular passages called plasmodesmata (PD). The PD passage is composed of an appressed endoplasmic reticulum (ER) internally, and plasma membrane (PM) externally, that traverses the cell wall, and associates with the actin-cytoskeleton. The coordination of the ER, PM and cytoskeleton plays a potential role in maintaining the architecture and conductivity of PD. Many data suggest that PD-associated proteins can serve as tethers that connect these structures in a functional PD, to regulate cell-to-cell communication. In this review, we summarize the organization and regulation of PD activity via tethering proteins, and discuss the importance of PD-mediated cell-to-cell communication in plant development and defense against environmental stress.

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评论：膜系绳控制质结节功能和形成

摘要 细胞间通讯对于协调多细胞生物的不同生物过程至关重要。在植物中，相邻细胞之间的通讯通过称为胞间连丝 (PD) 的纳米管通道发生。PD 通道由内部的贴壁内质网 (ER) 和外部的质膜 (PM) 组成，质膜 (PM) 穿过细胞壁，并与肌动蛋白细胞骨架相关联。ER、PM 和细胞骨架的协调在维持 PD 的结构和电导率方面起着潜在的作用。许多数据表明，PD 相关蛋白可以作为连接功能性 PD 中这些结构的系绳，以调节细胞间通讯。在这篇综述中，我们总结了通过束缚蛋白对 PD 活动的组织和调节，