terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Effect of soil particle size on vine water status, leaf ABA content and berry quality in Nebbiolo grapes

Effect of soil particle size on vine water status, leaf ABA content and berry quality in Nebbiolo grapes

Abstract

The root and shoot abscisic acid (ABA) accumulation in response to water deficit and its relation with stomatal conductance is longtime known in grapevine. ABA-dependent and ABA-independent signalling response to osmotic stress coexist in sessile plants. In grapevine, the signaling role of ABA in response to water stress conditions and its influence on berry quality is critical to manage grapevine acclimation to climate change. The prevalent iso- or aniso-hydric behavior of grapevine varieties can be mitigated by the soil draining capacity: in the anisohydric Syrah grown in pots and in controlled conditions, an ABA-related stomatal closure was induced in water-retaining soils, resulting in a superimposition of the soil-related hormonal root-to-shoot signal respect to the putative genotypic-induced anisohydric response to water stress. In two consecutive years (2012 and 2013) we analyzed Nebbiolo water relations in two rain-fed vineyards (distance as the crow flies between the two was about 250 m) located on the Cannubi hill (Barolo area, Langhe Wine District, Piedmont, Italy). Vines were grafted on Vitis berlandieri x V. riparia rootstocks and soil were classified (USDA) as silty-loam (with 18 % of clay) and as loam (13 % of clay). We measured stomatal conductance, stem water potential, ABA leaf content and the main berry quality parameters. In 2013, the vineyard management (winter and green pruning, and bunch balance according to ‘Yield to Pruning Weight’ and ‘Leaf Area to Crop Weight’ ratios) allowed to avoid any discrepancies in the two vineyards vegetative-productive balance. Data showed that when drought was prolonged, Nebbiolo reduced its anisohydricity acting drought-induced stomatal closures earlier and for a longer period in the silty-loam soil, (richer in clay and more compact), respect to the loamy soil. The silty-loam soil determined a higher leaf ABA content during the season. This fact could explain the improved qualitative traits of berries harvested in the vineyard in the 18% clayey soil such as a higher content of anthocyanins (mg/berry), with a higher level of acylation (increase of color stabilization) and a higher content of free terpenes, following ABA-triggered metabolite responses.

Acknowledgements: authors warmly acknowledge Damilano cellar for hosting the trial.

DOI:

Publication date: October 11, 2023

Issue: ICGWS 2023

Type: Poster

Authors

Alessandra Ferrandino1*, Antonio Carlomagno2, Gianpiero Romana3, Claudio Lovisolo1

1 DISAFA – University of Turin, Largo Braccini 2, Grugliasco (TO)
2 DiCEM – University of Basilicata, Via Lanera 20, Matera (MT)
3 Agronomist, Consultant

Contact the author*

Keywords

soil texture, stomatal conductance, leaf water potential, anthocyanins, free terpenes

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

“Compost Application in the Vineyard: Effects on Soil Nutrition and Compaction”

The mechanization of pruning and harvesting in vineyards has increased the risk of soil compaction. To reclaim soil properties or avoid this degradation process, it is crucial to properly manage the soil organic matter, and the application of compost derived from the vines themselves is a strategy to achieve this. The objective of this study was to evaluate the properties of soil treated with different doses of compost applied both on the vine row and the inter rows of a Vitis vinifera crop.

Read More

Possible methods of adaptation to the effects of climate change in the Tokaj Wine Region 

Viticulture’s adaptation to the harmful effects of climate change is globally the biggest challenge of the near future. Short, extremely intensive rainfalls and longer periods of drought are getting more frequent in the Tokaj Wine Region, where the majority of the vineyards are cultivated on steep slopes. Hence, erosion has high risk, especially when combined with the loess-based soils on about ten percent of the region. The environmentally beneficial cover crop and mulch usage can effectively reduce the risk of erosion, according to research done by the Tokaj Wine Region Research Institute of Viticulture and Oenology.

Read More

Sparkling wines and atypical aging: investigating the risk of refermentation

Sparkling wine (SW) production entails a two-steps process where grape must undergoes a primary fermentation to produce a base wine (BW) which is then refermented to become a SW. This process allows for the development of a new physicochemical profile characterized by the presence of foam and a different organoleptic profile.

Read More

Cover crop management and termination timing have different effects on the maturation and water potentials of Glera (Vitis vinifera L.) in Friuli-Venezia Giulia

Inter-row soil tillage in vineyards, stimulates vigor and production due to the absence of competition for water and nutrients, however negatively affects organic matter content, soil erosion, and compaction, resulting in reduced fertility. In this study, we investigated the effects of different cover crop management approaches, including cultivation type and termination timing, on the physiological and productive responses of a Glera vineyard.
The experimental trial was conducted in Precenicco (UD) from 2019 to 2021. A commercial mixture for autumn cover cropping was sown in alternating rows, and the sowing pattern was changed each year.

Read More

Ecophysiological characterisation of terroir effects on Vitis vinifera L. Chardonnay and pinot noir in south african cool climate regions

Terroir encompasses environmental (climate, geology, soil and topography), genetic (cultivar and clone) and human factors (oenological and viticultural practices). Climate change brings about shifts in the suitability of a region for the growth of specific grapevine cultivars. This study focused on climatic and fruit parameters (berry size, weight, pH, total acidity (TA) and phenolics) to characterise the terroir effect in Vitis vinifera L. cultivars Chardonnay and Pinot Noir vineyards in the Cape South Coast region (Walker Bay and Elgin).

Read More