茉莉酸
水杨酸
生物
拟南芥
拟南芥
植物免疫
苯丙氨酸解氨酶
植物对草食的防御
植物激素
生物合成
系统获得性抵抗
植物
生物化学
酶
氨基酸
基因
苯丙氨酸
突变体
作者
Chhana Ullah,Yen-Ho Chen,María A. Ortega,Chung‐Jui Tsai
标识
DOI:10.1016/j.pbi.2023.102349
摘要
The phytohormone salicylic acid (SA) is known to regulate plant immunity against pathogens. Plants synthesize SA via the isochorismate synthase (ICS) pathway or the phenylalanine ammonia-lyase (PAL) pathway. The ICS pathway has been fully characterized using Arabidopsis thaliana, a model plant that exhibits pathogen-inducible SA accumulation. Many species including Populus (poplar) depend instead on the partially understood PAL pathway for constitutive as well as pathogen-stimulated SA synthesis. Diversity of SA-mediated defense is also evident in SA accumulation, redox regulation, and interplay with other hormones like jasmonic acid. This review highlights the contrast between Arabidopsis and poplar, discusses potential drivers of SA diversity in plant defenses, and offers future research directions.
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