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Title: Climate change due to heat and drought stress can alter the physiology of Maratheftiko local Cyprian grapevine variety
Authors: Chrysargyris, Antonios 
Xylia, Panayiota 
Antoniou, Omiros 
Tzortzakis, Nikos G. 
Keywords: Antioxidants;Climate change;Drought stress;Enzymes activity;Heat stress
Category: Agriculture Forestry and Fisheries
Field: Agricultural Sciences
Issue Date: Dec-2018
Publisher: IWA Publishing
Source: Journal of Water and Climate Change, 2018, Volume 9, Issue 4, Pages 715-727
Journal: Journal of Water and Climate Change 
Abstract: The effect of climate change (CC) on viticulture in Europe is of great concern and several international and indigenous grapevine cultivars have been examined for their adaptation to CC. In this study we focused on the short-term effects of light and moderate drought stress (DS) as well as heat stress (HS) on physiological and biochemical stress markers in Maratheftiko cultivar. We showed that leaf photosynthetic rate was decreased with DS and HS after 8 and 20 days. The leaf stomatal conductance was decreased in the case of DS after 8 days, while no differences could be found due to HS. Total phenols and flavonoids content and antioxidant capacity (FRAP and ABTS) were increased and seemed to be dependent on the relevant DS, HS and the period of stress exposure. Chlorophyll fluorescence was decreased in 50% volumetric water content (VWC) after 8 days of DS compared with the 100% VWC (control treatment). Leaf K and P content increased in moderate (50% VWC) irrigation stress and HS. Leaf hydrogen peroxide and lipid peroxidation increased after 8 days of DS, and this resulted in the increase of antioxidant enzymes activity. Overall, Maratheftiko performance against environmental stresses is related more to short-term DS than HS.
ISSN: 2040-2244
DOI: 10.2166/wcc.2018.226
Rights: © IWA Publishing 2018
Type: Article
Appears in Collections:Άρθρα/Articles

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