The oriental armyworm (Mythimna separata) feeding induces systemic defence responses within and between maize leaves

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	The oriental armyworm (Mythimna separata) feeding induces systemic defence responses within and between maize leaves
	Malook, Saif ul 1,2; Qi, Jinfeng 1; Hettenhausen, Christian 1; Xu, Yuxing 1,2; Zhang, Cuiping 1,2; Zhang, Jingxiong 1,2; Lu, Chengkai 1,2; Li, Jing1 ; Wang, Lei1 ; Wu, Jianqiang1
刊名	PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
	2019-03-04
卷号	374 期号:1767 页码:12
关键词	systemic defence herbivory maize jasmonic acid benzoxazinoids
ISSN号	0962-8436
英文摘要	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'.
语种	英语
WOS记录号	WOS:000460484100002
内容类型	期刊论文
源URL	[http://ir.kib.ac.cn/handle/151853/64824]
专题	昆明植物研究所_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.