Volatile organic compounds from the interaction between Fusarium verticillioides and maize kernels as a natural repellents of Sitophilus zeamais |
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| Affiliation: | 1. Instituto Multidisciplinario de Biología Vegetal (IMBiV-CONICET), Universidad Nacional de Córdoba, Avenida Vélez Sarsfield 1611, Córdoba X5016GCA, Argentina;2. Instituto de Ciencia y Tecnología de los Alimentos (ICTA), FCEFyN−Universidad Nacional de Córdoba, Avenida Vélez Sarsfield 1611, Córdoba X5016GCA, Argentina;1. Department of Plant Protection, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran;2. Department of Plant Protection, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran;1. USDA-ARS, Center for Grain and Animal Health Research, 1515 College Avenue, Manhattan, KS 66502, USA;2. Department of Grain Science and Industry, Kansas State University, Manhattan, KS 66506, USA;1. Henan University of Technology, Collaborative Innovation Center of Henan Grain Crops, Henan Collaborative Innovation Center of Grain Storage and Security, Zhengzhou, 450001, China;2. Department of Biosystems Engineering, University of Manitoba, Winnipeg, MB, R3T 5V6, Canada;1. Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, Mexico;2. Facultad de Agrobiología, Universidad Michoacana de San Nicolás de Hidalgo, Uruapan, Michoacán, Mexico;1. Department of Plant Protection, College of Agriculture and Natural Resources, Razi University, Kermanshah, Iran;2. Molecular Phytobacteriology Laboratory, Infectious Disease Research Center, KRIBB, Daejeon 34141, South Korea;3. Biosystem and Bioengineering Program, University of Science and Technology (UST), Daejeon 34141, South Korea |
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| Abstract: | Maize kernels are exposed to Sitophilus zeamais attack and Fusarium verticillioides infestation during storage, which can result in product deterioration and economic losses. The objective of this study was to evaluate the involvement of the Volatile Organic Compounds (VOCs) emitted by the fungi-corn system in grain-insect interactions. Volatiles emitted by healthy maize kernels were different from those emitted by fungal infected kernels, with the latter being enriched by alcohols, ketones and sesquiterpenes, which were considered early indicators of fungal contamination. The results demonstrated that the kernels exposed to the fungal VOCs and their pure compounds (1-octen-3-ol and 3-octanol) were less attractive and less damaged by S. zeamais than controls. In addition to compound adsorption, other processes may have caused the protective effect of exposed kernels against insect damage. This is the first contribution of the role of the fungal volatiles on the behavior of S. zeamais, and could provide an important contribution to the conservation of stored grains and pest management and an early indicator of fungal contamination. |
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| Keywords: | Maize Volatile organic compounds Sesquiterpenes |
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