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Advisor(s)
Abstract(s)
The Mediterranean basin is the leading worldwide region for olive production. Extreme
weather is increasingly frequent in this region, and how these climate extremes will affect olive
products and quality remains unknown. We aim to study the effects of the water deficit stress, which
occurred in the summer of 2017, on olive fruit and oil quality from a 30-year-old orchard. Fruits from
olive trees standing on (i) one hydrated and (ii) one dry area of an orchard at the north of Portugal
were harvested. Fruits’ water content, oil yield and quality, fruit carbohydrates, and fruit and oil
phenolic metabolite profiles were analyzed. Fruits from the dry area presented low water availability
and increased carbohydrates, oleuropein, oleoside, and elenolic acid glucoside abundance. Oil yield
was lower in the dry area, but the abundance of oleacein increased, together with traits of some
sensory sensations. Climate stress events can reduce oil yield but stimulate the accumulation of
bioactive compounds that improve oil quality and nutritional value.
Description
Keywords
Climate change Flavonoids Secoiridoids Olea europaea Drought Sensorial quality Olive metabolome
Pedagogical Context
Citation
Araújo, Márcia; Rodrigues, Nuno; Santos, Conceição; Pinto, Diana C.G.A.; Pereira, J.A.; Silva, Artur; Dias, Maria Celeste (2024). Effects of Summer Water Deficit Stress on Olive Fruits and Oil Quality. Horticulturae. eISSN 2311-7524. 10:12, p. 1-11
Publisher
MDPI