Nitrogen Deficiency Enhances Eggplant Defense against Western Flower Thrips via the Induction of the Jasmonate Pathway
文献类型： 外文期刊
作者： Zheng, Yueqin 1 ; Liu, Qianxia 1 ; Shi, Shuang 1 ; Zhu, Xiaowen 1 ; Chen, Yong 1 ; Lin, Shuo 1 ; Tian, Houjun 1 ; Huang, Lanyan 1 ; Wei, Hui 1 ;
作者机构： 1.Fujian Acad Agr Sci, Inst Plant Protect, State Key Lab Ecol Pest Control Fujian & Taiwan Cr, Fuzhou 350013, Peoples R China
2.Minist Agr, Fujian Key Lab Monitoring & Integrated Management, Fuzhou Sci Observing & Expt Stn Crop Pests, Fuzhou 350013, Peoples R China
3.Fujian Agr & Forestry Univ, Coll Plant Protect, Fuzhou 350002, Peoples R China
关键词： induced defense; JA; N deficiency; eggplant; anti-herbivore resistance; western flower thrips
期刊名称：PLANTS-BASEL （ 影响因子：4.5； 五年影响因子：4.8 ）
ISSN： 2223-7747
年卷期： 2024 年 13 卷 2 期
页码：
收录情况： SCI
摘要： Plant nutrition is connected to defense against insect herbivores, but the exact mechanism underlying the effect of the nitrogen (N) supply on the anti-herbivore capacity of eggplants (Solanum melongena) has not been studied in detail. Therefore, we examined the impact of low (LN, 0.5 mM) and high (HN, 5 mM) nitrate levels on eggplant resistance against the western flower thrips Frankliniella occidentalis (WFT), a major destructive eggplant pest. Our results showed that LN plants displayed enhanced defense responses to WFT compared to HN plants. This included increased transcript levels of key genes in the jasmonic acid (JA) pathway, the accumulation of JA-amido conjugates (jasmonoyl-isoleucine, jasmonoyl-phenylalanine, and jasmonoyl-valine), JA precursor (12-oxophytodienoic acid), and methyl jasmonate, higher transcript levels of defense marker genes (MPK3, MPK7, and WRKY53), and increased activities of polyphenol oxidase and peroxidase upon a WFT attack. Our findings suggest that N deficiency can prime JA-mediated defense responses in eggplants, resulting in increased anti-herbivore resistance.
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