scholarly journals Understanding Differential Responses of Grapevine (Vitis vinifera L.) Leaf and Fruit to Water Stress and Recovery Following Re-Watering

2012 ◽  
Vol 03 (09) ◽  
pp. 1232-1240 ◽  
Author(s):  
Bhaskar Bondada ◽  
Janani Shutthanandan
Keyword(s):  
Water Stress ◽  
Vitis Vinifera ◽  
Vitis Vinifera L ◽  
Differential Responses

Effect of water stress on partitioning of 14C-labelled photosynthates in Vitis vinifera

2004 ◽  
Vol 31 (7) ◽  
pp. 697 ◽  
Author(s):  
Josefina Bota ◽  
Oleg Stasyk ◽  
Jaume Flexas ◽  
Hipólito Medrano
Keyword(s):  
Water Stress ◽  
Vitis Vinifera ◽  
Water Potential ◽  
Distribution Pattern ◽  
Potential Gradient ◽  
Vitis Vinifera L ◽  
Gradient Theory ◽  
Influence Of Water ◽  
Total Plant ◽  
Sink Size

The influence of fruits on export and distribution of photosynthates was studied in Vitis vinifera L. cv. Tempranillo using 14C labelling. Also, the influence of water stress was analysed in fruiting and fruitless plants of Tempranillo and fruiting plants of cv. Alfonso Lavallée. In fruitless plants of Tempranillo, reserve organs (trunk, roots and lower shoot) represented 80% of total plant dry matter (DM), and imported up to 90% of the total 14C exported from the fed leaf. Therefore, the distribution pattern of photosynthates in these plants reflected mainly the sink size. However, the presence of fruits in Tempranillo strongly stimulated 14C export and changed the distribution pattern of assimilates. Fruits imported up to 70–80% of the total 14C exported, while representing only 25% of the total plant DM. Therefore, the strength of fruits as carbon sinks was independent of sink size, and it is discussed on the basis of a water potential gradient theory. Water stress caused a significant reduction of leaf water potential, photosynthesis and stomatal conductance, but caused only a slight, non-significant, decrease of carbohydrate export from the fed leaves, and did not affect the distribution pattern of 14C except in some minor fractions in Tempranillo. The 14C distribution into different fruit components was also unaffected. In contrast, in Alfonso Lavallée water stress resulted in a highly significant reduction of export, and an altered photosynthate distribution pattern. These differences could be due to the lower water potential attained in stressed Alfonso Lavallée plants.

Water use efficiency in Sangiovese grapes (Vitis vinifera L.) subjected to water stress before veraison: different levels of assessment lead to different conclusions

2015 ◽  
Vol 42 (2) ◽  
pp. 198 ◽  
Author(s):  
Maria Clara Merli ◽  
Matteo Gatti ◽  
Marco Galbignani ◽  
Fabio Bernizzoni ◽  
Eugenio Magnanini ◽  
...  
Keyword(s):  
Water Stress ◽  
Vitis Vinifera ◽  
Water Use Efficiency ◽  
Water Use ◽  
Soluble Solids ◽  
Vitis Vinifera L ◽  
Single Leaf ◽  
Annual Biomass ◽  
Seasonal Basis ◽  
Use Efficiency

Several recent papers have shown that in grapevine (Vitis vinifera L.), interpretation of responses to drought can differ depending upon the parameter chosen to express water use efficiency (WUE). In the present paper, a series of WUE expressions, including physiological and agronomical, were compared in potted grapevines (Vitis vinifera L. cv. Sangiovese) that were either well-watered (WW) or subjected to progressive drought before veraison (WS) by supplying decreasing fractions (i.e. 70%, 50% and 30% of daily vine transpiration (Trd) determined gravimetrically before vines were fully rewatered. Although single-leaf intrinsic and instantaneous WUE increased with water stress severity, seasonal and whole-canopy WUE were similar to that before stress, at 70% Trd and upon rewatering, but dropped during severe water stress. WUE calculated as mass of DW stored in annual biomass (leaves, canes and bunches) per litre of water used did not differ on a seasonal basis, whereas WS plants showed lower must soluble solids at harvest, and unchanged colour and phenolic concentration in spite of smaller berries with higher relative skin growth. Results confirm that whole-canopy WUE is a much better index than any single-leaf based WUE parameter for extrapolation to agronomic WUE and actual grape composition. In our specific case study, it can be recommended that water supply to drought-stressed Sangiovese grapevines before veraison should not be lower than 70% of daily vine water use.

scholarly journals Eco-Physiological Traits and Phenylpropanoid Profiling on Potted Vitis vinifera L. cv Pinot Noir Subjected to Ascophyllum nodosum Treatments under Post-Veraison Low Water Availability

2020 ◽  
Vol 10 (13) ◽  
pp. 4473 ◽  
Author(s):  
Linda Salvi ◽  
Cecilia Brunetti ◽  
Eleonora Cataldo ◽  
Paolo Storchi ◽  
Giovan Battista Mattii
Keyword(s):  
Water Stress ◽  
Secondary Metabolites ◽  
Vitis Vinifera ◽  
Foliar Application ◽  
Sampling Period ◽  
Ascophyllum Nodosum ◽  
Pinot Noir ◽  
Vitis Vinifera L ◽  
Irrigation Regimes ◽  
Berry Skins

In Mediterranean regions, extreme weather conditions during the growing season may alter grapevine physiology and metabolism, thus modifying the quality of wines. The objective of this study was to investigate the effects of Ascophyllum nodosum treatments on plant physiology and berry metabolism in Vitis vinifera exposed to water stress. The experiment was performed on potted vines subjected to two irrigation regimes (well-watered, WW, and water stressed, WS) both associated with A. nodosum treatments (SWE), compared with control plants (CTRL). Gas exchanges, chlorophyll fluorescence, and water relations were monitored on SWE and CTRL leaves, both in WW and WS vines at three times. Moreover, the quantification of secondary metabolites and their partitioning were performed in berry skins. Plants treated with A. nodosum extract showed higher photosynthesis and stomatal conductance than CTRL in both irrigation regimes and maintained a better plant hydraulic conductivity at the end of the sampling period. In addition, secondary metabolites in berry skins and their partitioning were significantly affected by the treatments in both irrigation regimes. Our results suggest that foliar application of A. nodosum extract may help the acclimation of grapevines to post-veraison water stress, likely improving plant physiological and biochemical performances under environmental constraints.

The isohydric cv. Montepulciano (Vitis vinifera L.) does not improve its whole-plant water use efficiency when subjected to pre-veraison water stress

2014 ◽  
Vol 179 ◽  
pp. 103-111 ◽  
Author(s):  
Stefano Poni ◽  
Marco Galbignani ◽  
Eugenio Magnanini ◽  
Fabio Bernizzoni ◽  
Alberto Vercesi ◽  
...  
Keyword(s):  
Water Stress ◽  
Vitis Vinifera ◽  
Water Use Efficiency ◽  
Water Use ◽  
Vitis Vinifera L ◽  
Plant Water ◽  
Plant Water Use ◽  
Whole Plant ◽  
Use Efficiency
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