An MAPK Pathway in Papilla Cells for Successful Pollination in Arabidopsis

• 作者: Yoshinobu Kato Sota Fujii
• 来源期刊: 分子植物（英文版）
• 年，卷（期）: 2020,（11）
• 所属期刊栏目: Spotlights
• 页码范围: 1539-1541
• 页数: 3页
• 语种: 英文

摘要

During the pollination process in Brassicaceae,pollen and papilla cells at the tip of the pistil communicate with each other and trigger various physiological responses such as pol-len hydration/germination and self-incompatibility.It was thought that papilla cells drastically change their cellular envi-ronment to conduct water and calcium-ion release and to pro-vide an energy source for pollen germination and pollen-tube elongation(Doucet et al.,2016).For example,actin reorganization and transport of vesicles containing calcium ions to plasma membranes occur during compatible pollination,and calcium-ion dynamics in the cytoplasm are changed during self-incompatible pollination(Iwano et al.,2015;Doucet et al.,2016).Exocytosis in papilla cells is also an essential process for effective compatible pollination(Samuel et al.,2009).Unraveling signaling pathways regulating these responses is an important task in understanding the basic mechanism of the pollination process and improving crop-breeding strategies.