Use este identificador para citar ou linkar para este item:
https://locus.ufv.br//handle/123456789/22483
Tipo: | Artigo |
Título: | Induced responses of Coffea arabica to attack of Coccus viridis stimulate locomotion of the herbivore |
Autor(es): | Fernandes, Flávio Lemes Picanço, Marcelo Coutinho Gontijo, Pablo Costa Fernandes, Maria Elisa de Sena Pereira, Eliseu José Guedes Semeão, Altair Arlindo |
Abstract: | The 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. |
Palavras-chave: | Coffee Green scale Phytosuccivorous insects Caffeine Alkaloids Phenolics Toxicity Behavior Hemiptera Coccidae |
Editor: | Entomologia Experimentalis et Applicata |
Tipo de Acesso: | Open Access |
URI: | https://doi.org/10.1111/j.1570-7458.2011.01113.x http://www.locus.ufv.br/handle/123456789/22483 |
Data do documento: | 11-Abr-2011 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
---|---|---|---|---|
artigo.pdf | artigo | 171,12 kB | Adobe PDF | Visualizar/Abrir |
Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.