Liu Saifei, Jiang Jincheng, Ma Zihui, Xiao Muye, Yang Lan, Tian Binnian, Yu Yang, Bi Chaowei, Fang Anfei, Yang Yuheng
College of Plant Protection, Southwest University, Chongqing, China.
Committee on Agriculture and Rural Affairs of Yongchuan District, Chongqing, China.
Front Plant Sci. 2022 Jun 22;13:922119. doi: 10.3389/fpls.2022.922119. eCollection 2022.
The compounds involved in the hydroxycinnamic acid amide (HCAA) pathway are an important class of metabolites in plants. Extensive studies have reported that a variety of plant hydroxycinnamamides exhibit pivotal roles in plant-pathogen interactions, such as -coumaroylagmatine and ferulic acid. The aim of this review is to discuss the emerging findings on the functions of hydroxycinnamic acid amides (HCAAs) accumulation associated with plant defenses against plant pathologies, antimicrobial activity of HCAAs, and the mechanism of HCAAs involved in plant immune responses (such as reactive oxygen species (ROS), cell wall response, plant defense hormones, and stomatal immunity). However, these advances have also revealed the complexity of HCAAs participation in plant defense reactions, and many mysteries remain to be revealed. This review provides an overview of the mechanistic and conceptual insights obtained so far and highlights areas for future exploration of phytochemical defense metabolites.
参与羟基肉桂酸酰胺（HCAA）途径的化合物是植物中一类重要的代谢产物。大量研究报道，多种植物羟基肉桂酰胺在植物与病原体的相互作用中发挥关键作用，如对香豆酰胍丁胺和阿魏酸。本综述的目的是讨论关于羟基肉桂酸酰胺（HCAA）积累与植物抵御植物病害功能、HCAA的抗菌活性以及HCAA参与植物免疫反应机制（如活性氧（ROS）、细胞壁反应、植物防御激素和气孔免疫）的新发现。然而，这些进展也揭示了HCAA参与植物防御反应的复杂性，许多谜团仍有待揭开。本综述概述了目前已获得的机制和概念性见解，并突出了植物化学防御代谢产物未来探索的领域。
