| Title: | The Asian corn borer Ostrinia furnacalis feeding increases the direct and indirect defence of mid-whorl stage commercial maize in the field |
| Author(s): | Guo J; Qi J; He K; Wu J; Bai S; Zhang T; Zhao J; Wang Z; |
| Address: | "State Key Laboratory for Biology of Plant Diseases and Insect Pests, MOA - CABI Joint Laboratory for Bio-safety, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China. Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China. Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China" |
| ISSN/ISBN: | 1467-7652 (Electronic) 1467-7644 (Print) 1467-7644 (Linking) |
| Abstract: | "The Asian corn borer (Ostrinia furnacalis Guenee) 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" |
| Keywords: | "Animals Gene Expression Profiling Gene Expression Regulation, Plant Herbivory Larva *Moths Plant Growth Regulators/genetics/metabolism Plant Leaves/metabolism Zea mays/genetics/*metabolism Ostrinia furnacalis benzoxazinoids herbivore-induced volatiles ind;" |
| Notes: | "MedlineGuo, Jingfei Qi, Jinfeng He, Kanglai Wu, Jianqiang Bai, Shuxiong Zhang, Tiantao Zhao, Jiuran Wang, Zhenying eng 2017YFD0201802/National Key Research and Development Program of China/International CARS-02/China Agriculture Research System/International Research Support, Non-U.S. Gov't England 2018/05/14 Plant Biotechnol J. 2019 Jan; 17(1):88-102. doi: 10.1111/pbi.12949. Epub 2018 Jun 13" |
