The Asian corn borerOstrinia furnacalisfeeding increases the direct and indirect defence of mid-whorl stage commercial maize in the field

玉米螟 轮藻(软体动物) 生物 欧洲玉米螟 鸵鸟 大田玉米 有害生物分析 转基因玉米 发育阶段 农学 植物 扎梅斯 转基因作物 基因 转基因 幼虫 发展心理学 螟蛾科 生物化学 心理学
作者
Jingfei Guo,Jinfeng Qi,Kanglai He,Jianqiang Wu,Shuxiong Bai,Tiantao Zhang,Jiuran Zhao,Zhenying Wang
出处
期刊:Plant Biotechnology Journal [Wiley]
卷期号:17 (1): 88-102 被引量:58
标识
DOI:10.1111/pbi.12949
摘要

The Asian corn borer (Ostrinia furnacalis Guenée) is a destructive pest of maize (Zea mays L.). Despite large-scale commercial maize production, little is known about the defensive responses of field-grown commercial maize to O. furnacalis herbivory, and how these responses result in direct and indirect defence against this pest. To elucidate the maize transcriptome response to O. furnacalis feeding, leaves of maize hybrid Jingke968 were infested with O. furnacalis for 0, 2, 4, 12 and 24 h. Ostrinia furnacalis feeding elicited stronger and more rapid changes in the defence-related gene expression (i.e. after 2 h), and more differentially expressed genes (DEGs) were up-regulated than down-regulated at all times post-induction (i.e. 2, 4, 12 and 24 h) in the O. furnacalis pre-infested maize plants. KEGG pathway analysis indicated that the DEGs in the O. furnacalis pre-infested maize are involved in benzoxazinoids, phytohormones, volatiles, and other metabolic pathways related to maize resistance to herbivores. In addition, the maize leaves previously infested by O. furnacalis for 24 h showed an obvious inhibition of the subsequent O. furnacalis performance, and maize volatiles induced by O. furnacalis feeding for 24 and 48 h attracted the parasitic wasp, Macrocentrus cingulum Brischke. The increased direct and indirect defences induced by O. furnacalis feeding were correlated with O. furnacalis-induced phytohormones, benzoxazinoids, and volatiles. Together, our findings provide new insights into how commercial maize orchestrates its transcriptome and metabolome to directly and indirectly defend against O. furnacalis at the mid-whorl stage in the field.
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