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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Oviposition by a moth suppresses constitutive and herbivore-induced plant volatiles in maize

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Fernanda Gomes Villalba Penaflor, M. [1] ; Erb, Matthias [2] ; Robert, Christelle Aurelie Maud [2] ; Miranda, Livia Atauri [2] ; Werneburg, Andrea Graf [1] ; Alda Dossi, Fabio Cleisto [1] ; Turlings, Ted C. J. [2] ; Mauricio Simoes Bento, J. [1]
Total Authors: 8
[1] Univ Sao Paulo, Lab Chem Ecol & Insect Behav, Dept Entomol & Acarol, Escola Super Agr Luiz de Queiroz, BR-13418900 Piracicaba, SP - Brazil
[2] Univ Neuchatel, Lab Fundamental & Appl Res Chem Ecol FARCE, Inst Biol, CH-2009 Neuchatel - Switzerland
Total Affiliations: 2
Document type: Journal article
Source: PLANTA; v. 234, n. 1, p. 207-215, JUL 2011.
Web of Science Citations: 35

Plant volatiles function as important signals for herbivores, parasitoids, predators, and neighboring plants. Herbivore attack can dramatically increase plant volatile emissions in many species. However, plants do not only react to herbivore-inflicted damage, but also already start adjusting their metabolism upon egg deposition by insects. Several studies have found evidence that egg deposition itself can induce the release of volatiles, but little is known about the effects of oviposition on the volatiles released in response to subsequent herbivory. To study this we measured the effect of oviposition by Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) moths on constitutive and herbivore-induced volatiles in maize (Zea mays L.). Results demonstrate that egg deposition reduces the constitutive emission of volatiles and suppresses the typical burst of inducible volatiles following mechanical damage and application of caterpillar regurgitant, a treatment that mimics herbivory. We discuss the possible mechanisms responsible for reducing the plant's signaling capacity triggered by S. frugiperda oviposition and how suppression of volatile organic compounds can influence the interaction between the plant, the herbivore, and other organisms in its environment. Future studies should consider oviposition as a potential modulator of plant responses to insect herbivores. (AU)