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Phytochemistry

Title:		"Identification of leaf volatiles from olive (Olea europaea) and their possible role in the ovipositional preferences of olive fly, Bactrocera oleae (Rossi) (Diptera: Tephritidae)"
Author(s):		Malheiro R; Casal S; Cunha SC; Baptista P; Pereira JA;
Address:		"Mountain Research Centre (CIMO), School of Agriculture, Polytechnic Institute of Braganca, Campus de Santa Apolonia, Apartado 1172, 5301-855 Braganca, Portugal; REQUIMTE/Laboratory of Bromatology and Hydrology, Faculty of Pharmacy, Porto University, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal. REQUIMTE/Laboratory of Bromatology and Hydrology, Faculty of Pharmacy, Porto University, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal. Electronic address: sucasal@ff.up.pt. REQUIMTE/Laboratory of Bromatology and Hydrology, Faculty of Pharmacy, Porto University, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal. Mountain Research Centre (CIMO), School of Agriculture, Polytechnic Institute of Braganca, Campus de Santa Apolonia, Apartado 1172, 5301-855 Braganca, Portugal. Mountain Research Centre (CIMO), School of Agriculture, Polytechnic Institute of Braganca, Campus de Santa Apolonia, Apartado 1172, 5301-855 Braganca, Portugal. Electronic address: jpereira@ipb.pt"
Journal Title:		Phytochemistry
Year:		2016
Volume:		20151022
Issue:
Page Number:		11 - 19
DOI:		10.1016/j.phytochem.2015.10.005
ISSN/ISBN:		1873-3700 (Electronic) 0031-9422 (Linking)
Abstract:		"The olive fly, Bactrocera oleae (Rossi), is a monophagous pest that displays an oviposition preference among cultivars of olive (Olea europaea L.). To clarify the oviposition preference, the olive leaf volatiles of three olive cultivars (Cobrancosa, Madural and Verdeal Transmontana) were assessed by headspace solid-phase microextraction gas chromatography-mass spectrometry (HS-SPME-GC/MS) at six different periods of olive fruit maturation and degrees of infestation. A total of 39 volatiles were identified, mainly esters and alcohols, with a minor percentage of aldehydes, ketones and terpenic compounds, including sesquiterpenes. At sampling dates with higher degrees of infestation, cv. Cobrancosa had, simultaneously, significantly lower infestation degrees and higher volatile amounts than the other two cultivars, with a probable deterrent effect for oviposition. The green leaf volatiles (GLVs) (Z)-3-hexen-1-ol and (Z)-3-hexen-1-ol acetate) were the main compounds identified in all cultivars, together with toluene. The abundance of GLVs decreased significantly throughout maturation, without significant differences among cultivars, while toluene showed a general increase and positive correlation with olive fly infestation levels. The results obtained could broaden our understanding of the roles of various types and amounts of olive volatiles in the environment, especially in olive fly host selection and cultivar preference"
Keywords:		Animals Female Fruit/chemistry Gas Chromatography-Mass Spectrometry *Hexanols/chemistry/isolation & purification/pharmacology Larva/drug effects Molecular Structure Olea/*chemistry/*parasitology Oviposition Plant Leaves/parasitology Portugal Sesquiterpene;
Notes:		"MedlineMalheiro, Ricardo Casal, Susana Cunha, Sara C Baptista, Paula Pereira, Jose Alberto eng Research Support, Non-U.S. Gov't England 2015/11/26 Phytochemistry. 2016 Jan; 121:11-9. doi: 10.1016/j.phytochem.2015.10.005. Epub 2015 Oct 22"