Yang Hao, You Chen, Yang Shaoyu, Zhang Yuping, Yang Fan, Li Xue, Chen Ning, Luo Yanmin, Hu Xiuli
State Key Laboratory of Wheat & Maize Crop Science, Henan Agricultural University, Zhengzhou, China.
College of Life Science, Henan Normal University, Xinxiang, China.
Front Plant Sci. 2021 Mar 9;12:633293. doi: 10.3389/fpls.2021.633293. eCollection 2021.
Pollen tube (PT) growth as a key step for successful fertilization is essential for angiosperm survival and especially vital for grain yield in cereals. The process of PT growth is regulated by many complex and delicate signaling pathways. Among them, the calcium/calcium-dependent protein kinases (Ca/CPKs) signal pathway has become one research focus, as Ca ion is a well-known essential signal molecule for PT growth, which can be instantly sensed and transduced by CPKs to control myriad biological processes. In this review, we summarize the recent progress in understanding the Ca/CPKs signal pathway governing PT growth. We also discuss how this pathway regulates PT growth and how reactive oxygen species (ROS) and cyclic nucleotide are integrated by Ca signaling networks.
花粉管（PT）生长作为成功受精的关键步骤，对于被子植物的存活至关重要，对谷类作物的产量尤为关键。PT生长过程受许多复杂而精细的信号通路调控。其中，钙/钙依赖性蛋白激酶（Ca/CPKs）信号通路已成为一个研究热点，因为钙离子是PT生长中众所周知的必需信号分子，它可被CPKs即时感知并转导，以控制众多生物学过程。在本综述中，我们总结了在理解调控PT生长的Ca/CPKs信号通路方面的最新进展。我们还讨论了该通路如何调控PT生长，以及活性氧（ROS）和环核苷酸如何被钙信号网络整合。
