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J Chem Ecol

Title:		If All Else Fails: Impact of Silicon Accumulation in Maize Leaves on Volatile Emissions and Oviposition Site Selection of Spodoptera exigua Hubner
Author(s):		Leroy N; Martin C; Arguelles Arias A; Cornelis JT; Verheggen FJ;
Address:		"Chemical and behavioral ecology, Gembloux Agro-Bio Tech, TERRA, University of Liege, Avenue de la Faculte d'Agronomie 2, 5030, Gembloux, Belgium. Water-Soil-Plant Exchanges, Gembloux Agro-Bio Tech, University of Liege, Avenue Marechal Juin 27, 5030, Gembloux, Belgium. Chemical and behavioral ecology, Gembloux Agro-Bio Tech, TERRA, University of Liege, Avenue de la Faculte d'Agronomie 2, 5030, Gembloux, Belgium. fverheggen@uliege.be"
Journal Title:		J Chem Ecol
Year:		2022
Volume:		20221027
Issue:		11-Dec
Page Number:		841 - 849
DOI:		10.1007/s10886-022-01386-y
ISSN/ISBN:		1573-1561 (Electronic) 0098-0331 (Linking)
Abstract:		"Silicon (Si) fertilization alleviates biotic stresses in plants. Si enhances plant resistance against phytophagous insects through physical and biochemical mechanisms. In particular, Si modifies jasmonic acid levels and the emissions of herbivore-induced plant volatiles (HIPVs). Here, we investigated whether Si accumulation in the tissues of maize leaves modifies the emissions of constitutive and herbivore-induced plant volatiles, with cascade deterrent effects on oviposition site selection by Spodoptera exigua Hubner (Lepidoptera: Noctuidae). Maize plants were cultivated in a hydroponic system under three Si concentrations, resulting in three groups of plants expressing different Si concentrations in their tissues (0.31 +/- 0.04, 4.69 +/- 0.49, and 9.56 +/- 0.30 g Si. Kg(- 1) DW). We collected volatiles from undamaged and caterpillar-infested plants, and found that Si concentration in plant tissues had no significant impact. Jasmonic acid content was high in insect-infested plants, but was similar across all Si treatments. Oviposition site selection bioassays using fertilized S. exigua females showed that Si concentration in plant tissues did not affect the number of eggs laid on Si-treated plants. In conclusion, our study shows that the Si content in maize tissues does not impact the semiochemical interactions with S. exigua"
Keywords:		Animals Female Spodoptera *Zea mays *Silicon/pharmacology Oviposition Herbivory Larva HIPVs Silica beet armyworm interaction semiochemical;
Notes:		"MedlineLeroy, Nicolas Martin, Clement Arguelles Arias, Anthony Cornelis, Jean-Thomas Verheggen, Francois J eng Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture/Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture/ 2022/10/28 J Chem Ecol. 2022 Dec; 48(11-12):841-849. doi: 10.1007/s10886-022-01386-y. Epub 2022 Oct 27"