植物激素水杨酸生物合成和信号转导研究进展

doi:10.16288/j.yczz.20-173

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Hereditas(Beijing) ›› 2020, Vol. 42 ›› Issue (9): 858-869.doi: 10.16288/j.yczz.20-173

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Progress on the biosynthesis and signal transduction of phytohormone salicylic acid

Xiaoyong Gu, Yang Liu, Lijing Liu()

School of Life Sciences, Shandong University, Qingdao 266237, China

Received:2020-06-12 Revised:2020-07-14 Online:2020-09-20 Published:2020-08-31
Contact: Liu Lijing E-mail:ljliu@sdu.edu.cn
Supported by:
Supported by the Qilu Scholarship from Shandong University No(11200087963080)

Abstract

Abstract:

The phenolic phytohormone salicylic acid (SA) is widely produced in plants, and is a key player in many processes of plant physiology, especially in plant immunity. During pathogen infection, SA is accumulated and the SA signaling pathway is activated to induce the expression of defense-related genes. Recently, a series of SA-related studies have been published. These researches filled gaps in the two SA biosynthesis pathways: the isochorismate synthase (ICS) pathway and the phenylalanine ammonia-lyase (PAL) pathway. The NPR1 (nonexpresser of PR genes 1) and its paralogs, NPR3 and NPR4, were identified as SA receptors. The effect of type II TGAs (TGACG-binding factor) on SA downstream genes was shown to depend on the SA receptor they interacted with. This review will systematically introduce the progress on SA biosynthesis and signal transduction, aiming to provide a theoretical reference for in-depth study of SA regulation on plant development and defense responses.

Key words: salicylic acid, salicylic acid biosynthesis, salicylic acid receptors, salicylic acid signal transduction

Xiaoyong Gu, Yang Liu, Lijing Liu. Progress on the biosynthesis and signal transduction of phytohormone salicylic acid[J]. Hereditas(Beijing), 2020, 42(9): 858-869.

Figures/Tables 1

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