Effect of Major Tea Insect Attack on Formation of Quality-Related Nonvolatile Specialized Metabolites in Tea (Camellia sinensis) Leaves
文献类型： 外文期刊
作者： Liao, Yinyin 1 ; Yu, Zhenming 1 ; Liu, Xiaoyu 1 ; Zeng, Lanting 1 ; Cheng, Sihua 1 ; Li, Jianlong 4 ; Tang, Jinchi 4 ; Ya 1 ;
作者机构： 1.Chinese Acad Sci, Guangdong Prov Key Lab Appl Bot, Xingke Rd 723, Guangzhou 510650, Guangdong, Peoples R China
2.Chinese Acad Sci, Key Lab South China Agr Plant Mol Anal & Genet Im, South China Bot Garden, Xingke Rd 723, Guangzhou 510650, Guangdong, Peoples R China
3.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
4.Guangdong Acad Agr Sci, Dafeng Rd 6, Guangzhou 510640, Guangdong, Peoples R China
5.Guangdong Prov Key Lab Tea Plant Resources Innova, Tea Res Inst, Dafeng Rd 6, Guangzhou 510640, Guangdong, Peoples R China
关键词： caffeine; catechin; insect; phytohormone; L-theanine; tea
期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：5.279； 五年影响因子：5.269 ）
ISSN： 0021-8561
年卷期： 2019 年 67 卷 24 期
页码：
收录情况： SCI
摘要： Insect attack is known to induce a high accumulation of volatile metabolites in tea (Camellia sinensis). However, little information is available concerning the effect of insect attack on tea quality-related nonvolatile specialized metabolites. This study aimed to investigate the formation of characteristic nonvolatile specialized metabolites in tea leaves in response to attack by major tea insects, namely, tea green leafhoppers and tea geometrids, and determine the possible involvement of phytohormones in metabolite formation resulting from insect attack. Both tea green leafhopper and tea geometrid attacks increased the jasmonic acid and salicylic acid contents. The abscisic acid content was only increased under tea green leafhopper attack, perhaps due to special continuous piercing-sucking wounding. Tea green leafhopper attack induced the formation of theaflavins from catechins under the action of polyphenol oxidase, while tea geometrid attack increased the l-theanine content. Exogenous phytohormone treatments can affect the caffeine and catechin contents. These results will help to determine the influence of major tea pest insects on important tea quality-related metabolites and enhance understanding of the relationship of phytohormones and quality-related nonvolatile metabolite formation in tea exposed to tea pest insect attacks.
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