The diversity of salicylic acid biosynthesis and defense signaling in plants: Knowledge gaps and future opportunities
The diversity of salicylic acid biosynthesis and defense signaling in plants: Knowledge gaps and future opportunities
复制标题
植物中水杨酸生物合成和防御信号的多样性：知识差距和未来机遇
DOI：
10.1016/j.pbi.2023.102349
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发表时间：
2023
影响因子：
9.5
通讯作者：
Tsai, Chung-Jui
中科院分区：
文献类型：
--
作者：
Ullah, Chhana;Chen, Yen-Ho;Ortega, María A.;Tsai, Chung-Jui
已知植物激素水杨酸（SA）调节植物对病原体的免疫。植物通过异分支酸合成酶（ICS）途径或苯丙氨酸解氨酶（PAL）途径合成SA。ICS途径已充分表征使用拟南芥，一种模式植物，表现出病原体诱导SA积累。包括白杨在内的许多物种都依赖于部分已被理解的PAL途径来进行组成性和病原体刺激的SA合成。SA介导的防御的多样性在SA积累、氧化还原调节以及与其他激素如茉莉酸的相互作用中也是明显的。本文重点介绍了杨树与拟南芥的差异，讨论了SA多样性在植物防御中的潜在驱动因素，并提出了未来的研究方向。
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 usingArabidopsis thaliana, a model plant that exhibits pathogen-inducible SA accumulation. Many species includingPopulus(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 betweenArabidopsisand poplar, discusses potential drivers of SA diversity in plant defenses, and offers future research directions.