Exocytosis and Endocytosis: Yin-Yang Crosstalk for Sculpting a Dynamic Growing Pollen Tube Tip.
Exocytosis and Endocytosis: Yin-Yang Crosstalk for Sculpting a Dynamic Growing Pollen Tube Tip.
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胞吐作用和内吞作用：阴阳串扰塑造动态生长的花粉管尖端
DOI：
10.3389/fpls.2020.572848
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发表时间：
2020
影响因子：
5.6
通讯作者：
Wang H
中科院分区：
文献类型：
--
作者：
Zhao L;Rehmani MS;Wang H
花粉管生长是研究植物细胞极性和极性细胞生长的最具吸引力的模式细胞系统之一。快速生长的花粉管通过强烈的顺行胞吐作用实现细胞的尖端集中扩张，通过这种方式，各种新合成的大分子被定向运输并沉积在细胞顶端。同时，主动逆行内吞作用抵消了尖端的胞吐作用，这被认为是将过量的胞吐组分再循环用于多轮分泌。因此，顶端胞吐和胞吞作用是驱动花粉管极性生长的前线细胞过程，尽管它们代表具有不同支撑机制的相反囊泡运输事件。然而，在花粉管极化和生长过程中，胞吐和胞吞作用的时空串扰和平衡的分子基础仍然难以捉摸。在这里，我们讨论了最近的见解，胞吐和胞吞在雕刻高速率的极化花粉管生长。此外，我们还特别介绍了数学建模在揭开细胞极性和极性细胞生长之谜方面的新的整合。
The growing pollen tube has become one of the most fascinating model cell systems for investigations into cell polarity and polar cell growth in plants. Rapidly growing pollen tubes achieve tip-focused cell expansion by vigorous anterograde exocytosis, through which various newly synthesized macromolecules are directionally transported and deposited at the cell apex. Meanwhile, active retrograde endocytosis counter balances the exocytosis at the tip which is believed to recycle the excessive exocytic components for multiple rounds of secretion. Therefore, apical exocytosis and endocytosis are the frontline cellular processes which drive the polar growth of pollen tubes, although they represent opposite vesicular trafficking events with distinct underpinning mechanisms. Nevertheless, the molecular basis governing the spatiotemporal crosstalk and counterbalance of exocytosis and endocytosis during pollen tube polarization and growth remains elusive. Here we discuss recent insight into exocytosis and endocytosis in sculpturing high rates of polarized pollen tube growth. In addition, we especially introduce the novel integration of mathematical modeling in uncovering the mysteries of cell polarity and polar cell growth.
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影响因子：
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作者：
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DOI：
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