Comparative transcriptomic analysis of resistant and susceptible tea cultivars in response toEmpoasca onukii(Matsuda) damage

文献类型： 外文期刊

第一作者： Jin, Shan

作者： Jin, Shan;Ren, Qianqian;Ye, Naixing;Wei, Rifeng;Jin, Shan;Cai, Xiaoming;Bian, Lei;Luo, Zongxiu;Li, Zhaoqun;Chen, Zongmao;Jin, Shan;He, Weiyi;Lian, Lingli;Liu, Wei

作者机构：

关键词： Host plant resistance; Molecular mechanism; Tea small green leafhopper; Transcriptome

期刊名称：PLANTA （ 影响因子：4.116； 五年影响因子：4.316 ）

ISSN： 0032-0935

年卷期： 2020 年 252 卷 1 期

页码：

收录情况： SCI

摘要： Main conclusion Transcriptomic studies in resistant and susceptible tea cultivars have been performed to reveal the different defense molecular mechanisms of tea afterE. onukiifeeding. The molecular mechanism by which tea plants respond to small green leafhopperEmpoasca onukii(Matsuda) damage is unclear. Using the resistant tea plant cultivar Juyan (JY) and the susceptible tea plant cultivar Enbiao (EB) as materials, this study performed RNA-seq on tea leaf samples collected at three time points (6 h, 12 h, 24 h) during exposure of the plants to leafhopper to reveal the molecular mechanisms that are activated in susceptible and resistant tea plant cultivars in response to leafhopper damage. The numbers of DEGs in the susceptible tea cultivar during early (6 h) and late (24 h) stages of leafhopper induction were higher than those in the resistant cultivar at the same time points. The stress responses to leafhopper were most intense at 12 h in both tea cultivars. Pathway enrichment analysis showed that most up-regulated DEGs and their related metabolic pathways were similar in the two tea cultivars. However, during the early stage of leafhopper induction (6 h), jasmonic acid (JA)-related genes were significantly up-regulated in the resistant cultivar. The terpenoid biosynthetic pathway and the alpha-linolenic acid metabolic pathway were activated earlier in the resistant cultivar and remained activated until the late stage of leafhopper damage. Our results confirmed that after leafhopper damage, the resistant tea cultivar activated its defense responses earlier than the susceptible cultivar, and these defense responses were mainly related to terpenoid metabolism and JA biosynthetic pathway. The results provide important clues for further studies on resistance strategy of tea plants to pest.

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