Exogenous methyl jasmonate induced cassava defense response and enhanced resistance to Tetranychus urticae
文献类型： 外文期刊
作者： Zhang, Yao 1 ; Liu, Ying 2 ; Liang, Xiao 2 ; Wu, Chunling 2 ; Liu, Xiaoqiang 2 ; Wu, Mufeng 2 ; Yao, Xiaowen 2 ; Qiao, Yang 2 ; Zhan, Xue 1 ; Chen, Qing 2 ;
作者机构： 1.Guizhou Univ, State Key Lab Breeding Base Green Pesticide & Agr, Key Lab Green Pesticide & Agr Bioengn, Minist Educ, Guiyang 550025, Peoples R China
2.Minist Agr & Rural Affairs, Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Key Lab Integrated Pest Management Trop Crops, Haikou 571101, Peoples R China
3.Chinese Acad Trop Agr Sci, Sanya Res Acad, Hainan Key Lab Biosafety Monitoring & Mol Breeding, Sanya 572000, Peoples R China
关键词： Methyl jasmonate; Tetranychus urticae; Cassava; Performance; Enzyme activity; Resistance
期刊名称：EXPERIMENTAL AND APPLIED ACAROLOGY （ 影响因子：2.2； 五年影响因子：2.1 ）
ISSN： 0168-8162
年卷期： 2023 年 89 卷 1 期
页码：
收录情况： SCI
摘要： Exogenous application of methyl jasmonate (MeJA) could activate plant defense response against the two-spotted spider mite (TSSM), Tetranychus urticae Koch, in different plants. However, whether MeJA can also serve as an elicitor in cassava (Manihot esculenta Crantz) remains unknown. In this study, induced defense responses were investigated in TSSM-resistant cassava variety C1115 and TSSM-susceptible cassava variety KU50 when applied with MeJA. The performance of TSSM feeding on cassava plants that were pre-treated with various concentrations of MeJA was first evaluated. Subsequently, the activities of antioxidative enzymes (superoxide dismutase and catalase), detoxification enzymes (glutathione S-transferase, cytochrome P450 and carboxylesterase) and digestive enzymes (protease, amylase and invertase) in TSSM were analyzed at days 1, 2, 4 and 8 post-feeding. The results showed that MeJA treatment can induce cassava defense responses to TSSM in terms of reducing egg production and adult longevity as well as slowing development and prolonging the egg stage. Noticeably, C1115 exhibited stronger inhibition of TSSM development and reproduction than KU50. In addition, the activities of all the tested enzymes were induced in both C1115 and KU50, the most in C1115. We conclude that exogenous methyl jasmonate can induce cassava defense responses and enhance resistance to TSSM.
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