Herbivore-induced DMNT catalyzed by CYP82D47 plays an important role in the induction of JA-dependent herbivore resistance of neighboring tea plants

被引:67
作者
Jing, Tingting [1 ]
Du, Wenkai [1 ]
Gao, Ting [1 ]
Wu, Yi [1 ]
Zhang, Na [1 ]
Zhao, Mingyue [1 ]
Jin, Jieyang [1 ]
Wang, Jingming [1 ]
Schwab, Wilfried [1 ,2 ]
Wan, Xiaochun [1 ]
Song, Chuankui [1 ]
机构
[1] Anhui Agr Univ, State Key Lab Tea Plant Biol & Utilizat, Int Joint Lab Tea Chem & Hlth Effects, Hefei 230036, Anhui, Peoples R China
[2] Tech Univ Munich, Biotechnol Nat Prod, Freising Weihenstephan, Germany
基金
中国国家自然科学基金;
关键词
herbivorous insects; HIPVs; JA pathway; plant-plant communication; tea plant; WOUND-RESPONSE; HOST-PLANT; VOLATILES; COMMUNICATION; DEFENSE; ATTRACTION; JASMONATE; ETHYLENE; ENZYME; LEAVES;
D O I
10.1111/pce.13861
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Herbivore-induced plant volatiles play important ecological roles in defense against stresses. However, if and which volatile(s) are involved in the plant-plant communication in response to herbivorous insects in tea plants remains unknown. Here, plant-plant communication experiments confirm that volatiles emitted from insects-attacked tea plants can trigger plant resistance and reduce the risk of herbivore damage by inducing jasmonic acid (JA) accumulation in neighboring plants. The emission of six compounds was significantly induced by geometridEctropis obliqua, one of the most common pests of the tea plant in China. Among them,(E)-4,8-dimethyl-1,3,7-nonatriene (DMNT) could induce the accumulation of JA and thus promotes the resistance of neighboring intact plants to herbivorous insects. CsCYP82D47 was identified for the first time as a P450 enzyme, which catalyzes the final step in the biosynthesis of DMNT from(E)-nerolidol. Down-regulation ofCsCYP82D47in tea plants resulted in a reduced accumulation of DMNT and significantly reduced the release of DMNT in response to the feeding of herbivorous insects. The first evidence for plant-plant communication in response to herbivores in tea plants will help to understand how plants respond to volatile cues in response to herbivores and provide new insight into the role(s) of DMNT in tea plants.
引用
收藏
页码:1178 / 1191
页数:14
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