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The Infestation of Olive Fruits by Bactrocera oleae (Rossi) Modifies the Expression of Key Genes in the Biosynthesis of Volatile and Phenolic Compounds and Alters the Composition of Virgin Olive Oil.
- Source :
-
Molecules (Basel, Switzerland) [Molecules] 2022 Mar 02; Vol. 27 (5). Date of Electronic Publication: 2022 Mar 02. - Publication Year :
- 2022
-
Abstract
- Bactrocera oleae , the olive fruit fly, is one of the most important pests affecting the olive fruit, causing serious quantitative and qualitative damage to olive oil production. In this study, the changes induced by B. oleae infestation in the biosynthesis of volatile and phenolic compounds in olive (cvs. Picual, Manzanilla, and Hojiblanca) have been analyzed. Despite cultivar differences, the oils obtained from infested fruits showed a significant increase in the content of certain volatile compounds such as ( E) -hex-2-enal, ethanol, ethyl acetate, and β-ocimene and a drastic decrease of the phenolic contents. The impact of those changes on the inferred quality of the oils has been studied. In parallel, the changes induced by the attack of the olive fly on the expression of some key genes in the biosynthesis of volatile and phenolic compounds, such as lipoxygenase, β-glucosidase, and polyphenol oxidase, have been analyzed. The strong induction of a new olive polyphenol oxidase gene ( OePPO2) explains the reduction of phenolic content in the oils obtained from infested fruits and suggest the existence of a PPO-mediated oxidative defense system in olives.
- Subjects :
- Animals
Gene Expression Regulation, Plant
Catechol Oxidase metabolism
Catechol Oxidase genetics
Lipoxygenase metabolism
Lipoxygenase genetics
beta-Glucosidase metabolism
beta-Glucosidase genetics
Acyclic Monoterpenes
Alkenes
Olea parasitology
Olea chemistry
Olive Oil chemistry
Tephritidae metabolism
Tephritidae genetics
Phenols chemistry
Volatile Organic Compounds metabolism
Fruit chemistry
Fruit parasitology
Fruit metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 1420-3049
- Volume :
- 27
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- Molecules (Basel, Switzerland)
- Publication Type :
- Academic Journal
- Accession number :
- 35268754
- Full Text :
- https://doi.org/10.3390/molecules27051650