Plant Chemical Defenses against Insect Herbivores—Using theWild Tobacco as a Model  

作　　者：Guangwei Sun Xuanhao Zhang Yi Liu Liguang Chai Daisong Liu Zhenguo Chen Shiyou Lü 

机构地区：[1]Hubei Provincial Tobacco Research Institute,Wuhan,430030,China [2]Shiyan Branch of Hubei Tobacco Company,Shiyan,442000,China [3]State Key Laboratory of Biocatalysis and Enzyme Engineering,School of Life Sciences,Hubei University,Wuhan,430062,China

出　　处：《Phyton-International Journal of Experimental Botany》2024年第4期641-659,共19页国际实验植物学杂志（英文）

基　　金：the Project of China National Tobacco Corporation(Grant Number 110202102007);the Project of Hubei Tobacco Company(Grant Number 027Y2021-005).

摘　　要：The Nicotiana genus, commonly known as tobacco, holds significant importance as a crucial economic crop. Confrontedwith an abundance of herbivorous insects that pose a substantial threat to yield, tobacco has developed adiverse and sophisticated array of mechanisms, establishing itself as a model of plant ecological defense. Thisreview provides a concise overview of the current understanding of tobacco’s defense strategies against herbivores.Direct defenses, exemplified by its well-known tactic of secreting the alkaloid nicotine, serve as a potent toxinagainst a broad spectrum of herbivorous pests. Moreover, in response to herbivore attacks, tobacco enhancesthe discharge of volatile compounds, harnessing an indirect strategy that attracts the predators of the herbivores.The delicate balance between defense and growth leads to the initiation of most defense strategies only after aherbivore attack. Among plant hormones, notably jasmonic acid (JA), play central roles in coordinating thesedefense processes. JA signaling interacts with other plant hormone signaling pathways to facilitate the extensivetranscriptional and metabolic adjustments in plants following herbivore assault. By shedding light on these ecologicaldefense strategies, this review emphasizes not only tobacco’s remarkable adaptability in its natural habitatbut also offers insights beneficial for enhancing the resilience of current crops.

关 键 词：TOBACCO HERBIVORE chemical defense jasmonic acid REGULATION 

分 类 号：Q94[生物学—植物学]