Dispensing synthetic green leaf volatiles in maize fields increases the release of sesquiterpenes by the plants, but has little effect on the attraction of pest and beneficial insects

Mérey, Georg von; Veyrat, Nathalie; Mahuku, George; Valdez, Raymundo López; Turlings, Ted C. J.; D’Alessandro, Marco

doi:10.1016/j.phytochem.2011.04.022

Cited by 72 publications

(71 citation statements)

References 76 publications

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“…However, these changes in volatile emissions had no consistent effects on infestation by Spodoptera frugiperda larvae, the main insect pest found on the maize seedlings in this region, and the treatments only marginally effected parasitism rates. These somewhat disappointing results may be explained by the severe biotic and abiotic conditions during the time of the experiment, which may have masked the effects of the treatments [68]. To test whether this is indeed the case, further field experiments, using early (seed) treatments, before pest infestations, will be needed.…”

Section: (B) Field Studiesmentioning

confidence: 99%

The prospect of applying chemical elicitors and plant strengtheners to enhance the biological control of crop pests

Sobhy

Erb

Lou

et al. 2014

Phil. Trans. R. Soc. B

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An imminent food crisis reinforces the need for novel strategies to increase crop yields worldwide. Effective control of pest insects should be part of such strategies, preferentially with reduced negative impact on the environment and optimal protection and utilization of existing biodiversity. Enhancing the presence and efficacy of native biological control agents could be one such strategy. Plant strengthener is a generic term for several commercially available compounds or mixtures of compounds that can be applied to cultivated plants in order to 'boost their vigour, resilience and performance'. Studies into the consequences of boosting plant resistance against pests and diseases on plant volatiles have found a surprising and dramatic increase in the plants' attractiveness to parasitic wasps. Here, we summarize the results from these studies and present new results from assays that illustrate the great potential of two commercially available resistance elicitors. We argue that plant strengtheners may currently be the best option to enhance the attractiveness of cultivated plants to biological control agents. Other options, such as the genetic manipulation of the release of specific volatiles may offer future solutions, but in most systems, we still miss fundamental knowledge on which key attractants should be targeted for this approach.

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Section: (B) Field Studiesmentioning

confidence: 99%

The prospect of applying chemical elicitors and plant strengtheners to enhance the biological control of crop pests

Sobhy

Erb

Lou

et al. 2014

Phil. Trans. R. Soc. B

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“…114 Isso explicaria a falta de atratividade dos inimigos naturais onde foram testados VFVs e (E)-DMNT. 115,116 É possível que os compostos reativos sejam percebidos unicamente a uma curta distância pelos insetos. Entretanto, embora os VFVs induzam a emissão de sesquiterpenos, no campo não aumentam o parasitismo 116 nem a atração de predadores do gênero Chrysopidae.…”

Section: Armadilhas à Base De Compostos Voláteisunclassified

“…66 Apesar dos parâmetros na maioria dos estudos terem sido obtidos em laboratório, existem evidências da ocorrência deste fenômeno na natureza. De acordo com Merey e colaboradores, 116 é possível que o uso de dispersores de liberação controlada induzam a liberação de voláteis por plantas vizinhas. Assim, esse fenômeno poderia ser usado para melhorar a resposta induzida das plantas à herbivoria, como um tipo de resistência.…”

Section: Preparação Das Plantas a Futuros Ataquesunclassified

Compostos orgânicos voláteis na defesa induzida das plantas contra insetos herbívoros

Pinto-Zevallos¹,

Martins²,

Pellegrino³

et al. 2013

Quím. Nova

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Recebido em 5/2/13; aceito em 4/7/13; publicado na web em 9/8/13 VOLATILE ORGANIC COMPOUNDS IN INDUCED PLANT DEFENSE AGAINST HERBIVOROUS INSECTS. The identification and manipulation of chemical compounds involved in vital activities of arthropods have the potential for developing less aggressive pest control strategies. Herbivory induces the emission of volatile organic compounds involved in the recruitment of natural enemies, plantplant interactions and repellency of other herbivores. In this report, we review the main chemical groups of volatile organic compounds and their ecological functions, provide an overview of the signal transduction pathways activated upon herbivory, and review the current state of knowledge for practical applications in pest management. We conclude by proposing perspectives for future research.Keywords: plant chemical defenses; herbivore-induced plant volatile organic compounds; sustainable agriculture. INTRODUÇÃONas últimas décadas presenciamos uma constante pressão da sociedade para aumentar a sustentabilidade de atividades produtivas, o que requer a criação de inovações e tecnologias menos agressivas ao meio ambiente e à saúde humana. Neste contexto, pesquisadores dedicados ao estudo do controle de pragas agrícolas têm um grande interesse no desenvolvimento de estratégias ecológicas e sustentáveis para programas de manejo integrado de pragas (MIP).Na natureza, as plantas desenvolveram e aperfeiçoaram uma diversidade considerável de mecanismos de defesa contra condições ambientais adversas, tais como o ataque de macro-e microorganismos antagonistas. São exemplos de defesa contra artrópodes herbívoros a produção de metabólitos secundários tóxicos (aleloquímicos), como a nicotina ou furanocumarinas, que podem matar herbívoros generalistas não adaptados, e proteínas de defesa, como inibidores de proteases ou polifenol oxidases, que dificultam a digestão e diminuem a disponibilidade de nutrientes e, consequentemente, o crescimento dos herbívoros.1 Esses mecanismos são considerados defesas diretas, uma vez que afetam diretamente os herbívoros ao impedir que estes se alimentem. Outros tipos de defesa direta das plantas são as barreiras físicas que impedem a entrada de patógenos ou artrópodes nos tecidos, ou seja, a parede celular, suberina, calose e cutícula.2 Além das defesas diretas, a presença de estruturas que oferecem proteção e alimento, tais como domatias e nectários extraflorais promovem a defesa indireta através da atração de parasitoides e predadores que exercem controle biológico sobre os herbívoros. 1As defesas das plantas não são somente expressadas constitutivamente, elas também podem ser induzidas em resposta ao stress abiótico ou biótico, como por exemplo, à herbivoria.3 Estas defesas induzidas oferecem muitas vantagens para a planta, uma vez que reduzem o investimento em mecanismos de defesa, retardam a adaptação e o desenvolvimento de resistência dos herbívoros. 4 No caso das defesas indiretas, a mudança no volume e concentração de açúcares e aminoácidos do néctar extraf...

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“…Rodriguez-Saona et al (2011a), in a greenhouse study, found that cranberry vines emit high amounts of MeSA when exposed to PredaLure dispensers, whereas unexposed vines released undetectable quantities of MeSA. In maize fields, von Mérey et al (2011) found that plants exposed to four synthetic green leaf volatiles ((Z)-3-hexenal, (Z)-3-hexenol, (E)-2-hexenal, and (Z)-3-hexenyl acetate) emit increased quantities of sesquiterpenes compared with non-exposed plants.…”

Section: Mechanism Of Attractionmentioning

confidence: 99%

Manipulation of Natural Enemies in Agroecosystems: Habitat and Semiochemicals for Sustainable Insect Pest Control

Rodriguez‐Saona¹,

Blaauw²,

Isaacs³

2012

Integrated Pest Management and Pest Control - Current and Future Tactics

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Dispensing synthetic green leaf volatiles in maize fields increases the release of sesquiterpenes by the plants, but has little effect on the attraction of pest and beneficial insects

Cited by 72 publications

References 76 publications

The prospect of applying chemical elicitors and plant strengtheners to enhance the biological control of crop pests

The prospect of applying chemical elicitors and plant strengtheners to enhance the biological control of crop pests

Compostos orgânicos voláteis na defesa induzida das plantas contra insetos herbívoros

Manipulation of Natural Enemies in Agroecosystems: Habitat and Semiochemicals for Sustainable Insect Pest Control

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