Rootstock effects on the adaptive strategies of grapevine (Vitis vinifera L. cv. Cabernet–Sauvignon) under contrasting water status: Leaf physiological and structural responses

By S. Koundouras, I. Tsialtas, E. Zioziou, N. Nikolaou. 2008

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Abstract The effects of two rootstocks (1103P and SO4) on water status, gas exchange, leaf structural characteristics and vine growth were studied in a factorial experiment over 2 years (2005–2006), in field-grown grapevines of cv. Cabernet–Sauvignon (Vitis vinifera L.), subjected to three irrigation levels (FI: 100% of evapotranspiration, DI: 50% of evapotranspiration and NI: not irrigated). The experiment was conducted on 10-year-old vines, grown under the semi-arid conditions of central Greece. There was a significant depressive effect in water status (estimated by midday stem water potential, Ψs) and net assimilation rate (A) of Cabernet–Sauvignon with decreasing water supply, on both rootstocks. The down regulation of A was mainly due to decreases in stomatal conductance (gs). NI treatment showed significantly higher intrinsic water use efficiency (A/gs) and lower leaf carbon isotope discrimination (Δ) compared to irrigated treatments. Leaf area index (LAI) and pruning weight (PW) were found to be higher under FI treatment but this effect was more pronounced on the 1103P-grafted vines. Canopy growth was strongly controlled by rootstock, being significantly higher on 1103P, presumably due to its higher capacity to access soil water. Rootstock genotype affected scion water status via its effect on whole-vine transpiration. Cabernet–Sauvignon photosynthesis response to water status was not altered by rootstock. The only apparent difference between rootstocks was the higher A of SO4-grafted vines under NI treatment, associated with higher Ψs. A/gs and Δ were only altered under FI treatment, with 1103P showing more efficient use of available soil water than SO4. Vines on SO4 had a lower specific leaf area (SLA) as a result of lower growth rate than 1103P, which possibly provided a supplemental mechanism to maintain leaf water status and gas exchange. Concluding, SO4 could be better adapted on fertile soils under non-limiting water supply due to its capacity to achieve a balanced vegetative and reproductive growth while 1103P, a more water efficient rootstock, would be better to grow in semi-arid regions where water limitation occurs.

Subfields: Global and Planetary Change, Plant Science

View Paper: https://www.semanticscholar.org/paper/bd8d524ec58d07b4bd1af85089efde82b9450e33

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Citations in the corpus

Grapevine adaptations to water stress: new perspectives about soil/plant interactions (2016, background): “…anatomical and physiological specificities of the root system) and of the metabolic control imposed via hormonal signalling (Soar et al. 2006a, b; Koundouras et al. 2008; Tandonnet et al. 2010; Comas et al. 2010; Alsina et al. 2011; Marguerit et al. 2012; Tramontini et al. 2013b; Berdeja et al.…”
Review: the interaction between rootstocks and cultivars (Vitis vinifera L.) to enhance drought tolerance in grapevine (2014, background): “…that grapevine response to water deficit involves a reduction in stomatal conductance and photosynthesis (Iacono et al. 1998, de Souza et al. 2003, Koundouras et al. 2008); a decrease in leaf expansion and internode elongation (Schultz and Mathews 1988, Cramer et al. 2007, Lovisolo et al. 2010);…”
Rootstock control of scion response to water stress in grapevine (2013, background): “All rights reserved. grape growing needs (e.g., Koundouras et al., 2008; Hamdan and Basheer-Salimia, 2010; Komar et al., 2010).”
Variability of water use efficiency in grapevines (2014, background): “1) (Bota et al., 2001; Costa et al., 2012; Gaudillère et al., 2002; Gómez-Alonso and García-Romero, 2010; Koundouras et al., 2008; Pou et al., 2008; Prieto et al., 2010; Rogiers et al., 2011; Schultz, 2003; Souza et al., 2005; Tomás et al., 2012; Zsófi et al., 2009).”