| Title: | Role of alpha-copaene in the susceptibility of olive fruits to Bactrocera oleae (Rossi) |
| Author(s): | de Alfonso I; Vacas S; Primo J; |
| Address: | "Ecologi?na y Proteccion Agri?ncola, S.L., Apartado de Correos no. 50, 46240 Carlet, Spain" |
| ISSN/ISBN: | 1520-5118 (Electronic) 0021-8561 (Linking) |
| Abstract: | "The influence of alpha-copaene as a fruit volatile in the susceptibility of Olea europaea L. to the olive fruit fly Bactrocera oleae (Rossi) has been investigated. By studies on the relative area of volatile components from different cultivars, a positive correlation was found between the abundance of alpha-copaene in the samples and the corresponding degree of fruit infestation. SPME-GC-MS analysis of volatiles from uninfested fruits of O. europaea L. cv. Serrana were performed over two years to determine the variation of alpha-copaene throughout the different phenological stages. The results suggested that this sesquiterpene has a significant effect on cultivar susceptibility and may act as an oviposition promoter. Further analysis by chiral GC showed that olive fruits release both alpha-copaene enantiomers. Bioassays on each enantiomer revealed that fruits with increased amounts of (+)-alpha-copaene favor oviposition of B. oleae females, whereas the increase of (-)-alpha-copaene affords no statistically significant differences in host preference" |
| Keywords: | Animals Diptera/*drug effects/growth & development/physiology Ecosystem Female Fruit/chemistry Larva/drug effects Male Olea/*chemistry Oviposition/drug effects Plant Extracts/chemistry/*pharmacology Sesquiterpenes/chemistry/*pharmacology Bactrocera oleae; |
| Notes: | "Medlinede Alfonso, Ignacio Vacas, Sandra Primo, Jaime eng 2014/11/20 J Agric Food Chem. 2014 Dec 10; 62(49):11976-9. doi: 10.1021/jf504821a. Epub 2014 Dec 1" |
