Roles of trichomes in tea plant resistance against multiple abiotic and biotic stresses  

作　　者：Penghui Li Yanrui Zhang Zhili Ye Hao Zuo Ping Li Xuecheng Zhao Zhihui Chen Changsong Chen Jian Zhao 

机构地区：[1]State Key Laboratory of Tea Plant Biology and Utilization,Anhui Agricultural University,Hefei 230036,China [2]Tea Research Institute,Fujian Academy of Agricultural Sciences,Fuzhou 350013,China

出　　处：《Beverage Plant Research》2022年第1期103-115,共13页饮料植物研究（英文）

基　　金：the National Natural Science Foundation of China(32002089);the Anhui Provincial Natural Science Foundation(201902a05020408);the National Key Research and Development Program of China(2018YFD1000601);the funding from Anhui Agricultural University and the State Key Laboratory of Tea Plant Biology and Utilization.

摘　　要：Tea trichomes contribute significantly to tea flavors by providing diverse and specific flavor-determining metabolites,including catechins,caffeine,theanine,and volatiles.However,not much is known about the physiological functions of tea trichomes in tea plant adaptation to complex environments,nor the trichome development.Tea trichomes not only build up chemical defenses,but also act as the first physical barrier protecting herbivore attacks,reflecting high light and UV-B radiation,and preventing water loss.Moreover,transcriptome profiling on the tea trichomes compared with the trichome-removed leaves also showed that tea trichomes highly expressed numerous defense-related genes involved in protection from high light and UV-B radiation,cold stress,disease resistance signal transduction,anti-herbivore or anti-abiotic peptide biosynthesis,and other defense responses.Several pieces of experimental evidence supported the notes,highlighting the roles of tea trichomes in plant defenses against both abiotic and biotic stresses.The study provides fresh insights into the multiple protective functions of tea trichome for tea plant adaptation to harsh environments.The new understanding on tea trichomes could benefit the development of better breading strategy for new tea varieties with greater adaption and tolerance to changing environmental challenges.

关 键 词：RESISTANCE protective removed 

分 类 号：S571.1[农业科学—茶叶生产加工]