Insect-corn kernel interaction: Chemical signaling of the grain and host recognition by 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;3. Facultad de Ciencias Agropecuarias (FCA), Universidad Nacional de Córdoba, Ing Agr. Félix Aldo Marrone 746, Córdoba, X5016GCA, Argentina;1. Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS, 39762, USA;2. Department of Entomology, Kansas State University, Manhattan, KS, 66506-4004, USA;3. Department of Biochemistry, Molecular Biology, Entomology, and Plant Pathology, Mississippi State University, Mississippi State, MS, 39762, USA;4. Department of Food and Nutrition, University of Wisconsin – Stout, Menomonie, WI 54751, USA;5. Department of Mathematics and Statistics, Mississippi State University, Mississippi State, MS 39762, USA;1. The New Zealand Institute for Plant & Food Research Limited, Private Bag 11600, Palmerston North, 4442, New Zealand;2. Apreso, PO Box 2407, Palmerston North, New Zealand;3. Start Afresh, PO Box 4606, Mt Maunganui, New Zealand;4. Mae Fah Luang University, 333 Moo. 1, Tasud, Muang, Chiang Rai, 57100, Thailand;1. UTP University of Science and Technology, Department of Entomology and Molecular Phytopathology, 85 – 225 Bydgoszcz, 20 Kordeckiego St., Poland;2. UTP University of Science and Technology, Department of Plant Growth Principles and Experimental Methodology, 85 – 225 Bydgoszcz, 20 Kordeckiego St., Poland |
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| Abstract: | In living organisms, the cuticle has structural functions and is involved through chemical signaling in biological interactions such as plant-insect and provides protection against biotic and abiotic factors, thereby avoiding desiccation or the attack of predators. The objective of this study was to investigate the participation of the epicuticle in the maize kernel-Sitophilus zeamais interaction. The GC-MS analysis of the epicuticle extract demonstrated the presence of aliphatic hydrocarbons, alcohols, ethers, fatty acids, sterols and their derivatives. The results of bioassays show that the epicuticle of maize has a primordial role in its interaction with S. zeamais, and participates in the recognition and attraction to the food source, as well as regulating its reproduction. In addition the compounds present in the epicuticle extract may act as signal molecules and development regulators. This study reveals the effect of the maize kernel cuticle on Sitophilus behavior and contributes to the understanding of the interaction. |
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| Keywords: | Maize kernels Epicuticle Chemical signals Biological interaction |
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