Volatile oil from Guarea macrophylla ssp. tuberculata: Seasonal variation and electroantennographic detection by Hypsipyla grandella
| Autor: | Nidia F. Roque, João B. Fernandes, Paulo C. Vieira, Arlene G. Corrêa, João Henrique G. Lago, Marisi G. Soares, Luciane G. Batista-Pereira, M. Fátima das G. F. da Silva |
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| Rok vydání: | 2006 |
| Předmět: |
Chromatography
Gas Ledol Plant Science Horticulture Sesquiterpene Biochemistry Electroantennography Lepidoptera genitalia chemistry.chemical_compound Botany Electrochemistry Oils Volatile Animals Meliaceae Molecular Biology Molecular Structure biology Phenology General Medicine biology.organism_classification Lepidoptera chemistry Seasons PEST analysis Hypsipyla grandella |
| Zdroj: | Phytochemistry. 67:589-594 |
| ISSN: | 0031-9422 |
| DOI: | 10.1016/j.phytochem.2005.12.018 |
| Popis: | GC and GC-MS analyses of the volatile oils from Guarea macrophylla (Meliaceae) collected during three different periods in one year (February, June and October) indicated a seasonal variation in chemical composition. Whilst sesquiterpenes were the predominant class of components present in the leaf oil, a seasonal dependent variation in the degree of oxygenation of these compounds was detected, which seemed to be associated with phenological factors. The leaf oil, and fractions thereof, were subjected to GC coupled with electroantennographic detection employing antennae of females of Hypsipyla grandella, an insect pest that attacks several meliaceous species. Five compounds elicited significant responses and these were identified as ledol, 1-cubenol, guai-6-en-10beta-ol, 1-epi-cubenol, and tau-muurolol. The results suggest that these components could be responsible for the attraction of H. grandella to G. macrophylla. |
| Databáze: | OpenAIRE |
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