The diversity of salicylic acid biosynthesis and defense signaling in plants: Knowledge gaps and future opportunities

被引：61
作者：
Ullah, Chhana [1 ]
Chen, Yen-Ho [2 ]
Ortega, Maria A. [2 ,3 ,4 ]
Tsai, Chung-Ju [2 ,3 ,4 ]
机构：
[1] Max Planck Inst Chem Ecol, Dept Biochem, D-07745 Jena, Germany
[2] Univ Georgia, Dept Plant Biol, Athens, GA 30602 USA
[3] Univ Georgia, Sch Forestry & Nat Resources, Athens, GA 30602 USA
[4] Univ Georgia, Dept Genet, Athens, GA 30602 USA
来源：
CURRENT OPINION IN PLANT BIOLOGY | 2023年 / 72卷
基金：
美国食品与农业研究所; 美国国家科学基金会;
关键词：
Salicylic acid biosynthesis; Pathogen defense; Populus; Thioredoxin; Redox signaling; SA-JA synergism; DISEASE RESISTANCE; ISOCHORISMATE SYNTHASE; BTB/POZ DOMAIN; CRUCIAL ROLE; NPR1; INFECTION; GENES; PHYTOALEXINS; GLUCOSIDE; PATHWAYS;
D O I：
10.1016/j.pbi.2023.102349
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
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 phenylala-nine 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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页数：8
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