| The oriental armyworm (Mythimna separata) feeding induces systemic defence responses within and between maize leaves | |
Malook, Saif ul1,2; Qi, Jinfeng1; Hettenhausen, Christian1; Xu, Yuxing1,2; Zhang, Cuiping1,2; Zhang, Jingxiong1,2; Lu, Chengkai1,2; Li, Jing1 ; Wang, Lei1; Wu, Jianqiang1
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| 2019-03-04 | |
| 发表期刊 | PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
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| ISSN | 0962-8436 |
| 卷号 | 374期号:1767页码:12 |
| 摘要 | Maize (Zea mays) is a staple cereal crop cultivated all over the world but that is threatened by various insects. Feeding of the lepidopteran insect Mythimna separata triggers defence signalling and increases anti-herbivore benzoxazinoids (Bxs) in the insect-damaged maize leaves. However, the herbivory-elicited within-leaf and leaf-to-leaf systemic signalling in maize remains largely unexplored. Here, we show that simulated M. separata herbivory and mechanical wounding elicited increased levels of jasmonic acid (JA), JA-Ile (JA-isoleucine conjugate) and Bxs in the damaged areas and in specific systemic regionswithin a leaf. Importantly, increased contents of Bxs were detected in a systemic leaf, and consistently, this leaf exhibited increased defence against M. separata. Increased JA/JA-Ile and altered transcriptome, including Bx biosynthesis genes, were detected in systemic leaves after wounding or simulated herbivory treatments, although only simulated herbivory induced increase of the contents of Bxs systemically. Promoter and co-expression analysis revealed that transcription factors bHLH57 and WRKY34 may regulate Bx biosynthesis genes in systemic leaves. Moreover, leaf ablation experiment indicated that the systemic signal rapidly exited the local leaves within 30 min after elicitation. This study provides new insight into the temporal and spatial regulation of defence responses of maize against lepidopteran insects. This article is part of the theme issue 'Biotic signalling sheds light on smart pest management'. |
| 关键词 | systemic defence herbivory maize jasmonic acid benzoxazinoids |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000460484100002 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.kib.ac.cn/handle/151853/64824 |
| 专题 | 资源植物与生物技术所级重点实验室 |
| 通讯作者 | Wu, Jianqiang |
| 作者单位 | 1.Chinese Acad Sci, Kunming Inst Bot, Yunnan Key Lab Wild Plant Resources, Dept Econ Plants & Biotechnol, Kunming 650201, Yunnan, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Malook, Saif ul,Qi, Jinfeng,Hettenhausen, Christian,et al. The oriental armyworm (Mythimna separata) feeding induces systemic defence responses within and between maize leaves[J]. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES,2019,374(1767):12. |
| APA | Malook, Saif ul.,Qi, Jinfeng.,Hettenhausen, Christian.,Xu, Yuxing.,Zhang, Cuiping.,...&Wu, Jianqiang.(2019).The oriental armyworm (Mythimna separata) feeding induces systemic defence responses within and between maize leaves.PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES,374(1767),12. |
| MLA | Malook, Saif ul,et al."The oriental armyworm (Mythimna separata) feeding induces systemic defence responses within and between maize leaves".PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES 374.1767(2019):12. |
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