Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/22483
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dc.contributor.authorFernandes, Flávio Lemes
dc.contributor.authorPicanço, Marcelo Coutinho
dc.contributor.authorGontijo, Pablo Costa
dc.contributor.authorFernandes, Maria Elisa de Sena
dc.contributor.authorPereira, Eliseu José Guedes
dc.contributor.authorSemeão, Altair Arlindo
dc.date.accessioned2018-11-06T18:40:24Z
dc.date.available2018-11-06T18:40:24Z
dc.date.issued2011-04-11
dc.identifier.issn1570-7458
dc.identifier.urihttps://doi.org/10.1111/j.1570-7458.2011.01113.x
dc.identifier.urihttp://www.locus.ufv.br/handle/123456789/22483
dc.description.abstractThe green scale, Coccus viridis (Green) (Hemiptera: Coccidae), is an insect pest of coffee and several other perennial cultivated plant species. We investigated changes in alkaloid and phenolic contents in coffee plants as a response to herbivory by this insect. Greenhouse‐grown, 11‐month‐old coffee plants were artificially infested with the coccid and compared with control, uninfested plants. Leaf samples were taken at 15, 30, 45, and 60 days after infestation, and high‐performance liquid chromatography was used to identify and quantify alkaloid and phenolic compounds induced by the coccids at each sampling date. Of the compounds investigated, caffeine was the main coffee alkaloid detected in fully developed leaves, and its concentration in infested plants was twice as high as in the control plants. The main coffee phenolics were caffeic and chlorogenic acid, and a significant increase in their concentrations occurred only in plants infested by C. viridis. A positive and significant relationship was found between alkaloid and phenolic concentrations and the infestation level by adults and nymphs of C. viridis. Caffeine and chlorogenic acid applied on coffee leaves stimulated the locomotory activity of the green scale, thus reducing their feeding compared to untreated leaves. This is the first study to show increased levels of coffee alkaloids and phenolics in response to herbivory by scale insects. The elevation of caffeine and chlorogenic acid levels in coffee leaves because of C. viridis infestation seems to affect this generalist insect by stimulating the locomotion of crawlers.en
dc.formatpdfpt-BR
dc.language.isoengpt-BR
dc.publisherEntomologia Experimentalis et Applicatapt-BR
dc.relation.ispartofseriesVolume 139, Issue 2, Pages 120- 127, May 2011pt-BR
dc.rightsOpen Accesspt-BR
dc.subjectCoffeept-BR
dc.subjectGreen scalept-BR
dc.subjectPhytosuccivorous insectspt-BR
dc.subjectCaffeinept-BR
dc.subjectAlkaloidspt-BR
dc.subjectPhenolicspt-BR
dc.subjectToxicitypt-BR
dc.subjectBehaviorpt-BR
dc.subjectHemipterapt-BR
dc.subjectCoccidaept-BR
dc.titleInduced responses of Coffea arabica to attack of Coccus viridis stimulate locomotion of the herbivoreen
dc.typeArtigopt-BR
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