Roles of Ear Injury, Infestation, and Vector Activity by Ostrinia furnacalis (Asian Corn Borer) and Conogethes punctiferalis (Yellow Peach Moth) in Fusarium verticillioides Infection and Kernel Fumonisin Level
文献类型： 外文期刊
作者： Li, Qincheng 1 ; Shi, Jie 2 ; Huang, Chaolong 1 ; Guo, Jingfei 1 ; Hellmich, Richard L. 3 ; He, Kanglai 1 ; Wang, Zhenying 1 ;
作者机构： 1.Chinese Acad Agr Sci, State Key Lab Biol Plant Dis & Insect Pests, Inst Plant Protect, Beijing 100193, Peoples R China
2.Hebei Acad Agr & Forestry, Plant Protect Inst, Baoding 071030, Peoples R China
3.Agr Res Serv, US Dept Agr, Corn Insects & Crop Genet Res Unit, Ames, IA 50011 USA
关键词： Conogethes punctiferalis; fumonisins; Fusarium verticillioides; insect-fungus interaction; Ostrinia furnacalis
期刊名称：PHYTOPATHOLOGY （ 影响因子：3.2； 五年影响因子：3.9 ）
ISSN： 0031-949X
年卷期： 2023 年
页码：
收录情况： SCI
摘要： Field experiments were conducted to evaluate the roles of two corn borers, Asian corn borer (ACB), Ostrinia furnacalis and yellow peach moth (YPM), Conogethes punctiferalis, in Fusarium verticillioides infection using green fluorescent protein (GFP) as a marker. Effects of insect injury, manual injury, and insecticide application on fumonisin production also were assessed. In this study, third instars of ACB and YPM significantly increased GFP-tagged F. verticillioides infection compared with the control, regardless of the fungal inoculation method. Besides acquiring F. verticillioides spores from leaf surfaces and transmitting them to ears, larvae of the ACB and YPM also injure maize ears, which allows F. verticillioides from leaves or silk to infect ears more easily. This suggests that ACB and YPM larvae are vectors of F. verticillioides, which can increase the occurrence of ear rot. Manual injuries significantly increased GFP-tagged F. verticillioides infection of ears, while effective insect control significantly reduced F. verticillioides infection of ears. Insecticide control of borers also significantly reduced fumonisin content in kernels. Larval infestations significantly increased fumonisins in kernels to levels higher than or very close to the European Union threshold (4,000 mu g kg(-1)). Significant and high correlations among corn borer attack, F. verticillioides severity, and kernel fumonisin levels were discovered, confirming the important role of ACB and YPM activity in F. verticillioides infection and kernel fumonisin production.
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