terclim by ICS banner
IVES 9 IVES Conference Series 9 Effects of stress memory on grapevine resilience in response to recurrent drought and recovery events 

Effects of stress memory on grapevine resilience in response to recurrent drought and recovery events 

Abstract

Plants have evolved different strategies to cope with environmental stresses and, although still debated, it was observed that they can remember past stress occurrence.

Anatomical and physiological adjustments have been observed in different grapevine cultivars after repeated drought exposure, however epigenetic, transcriptional and biochemical changes associated with drought-primed ecological memory have been poorly studied.

This work was conceived to test whether exposure to recurring events of mild drought could prime vines to endure severe drought stress. Particularly, we investigated whether the expected improved stress tolerance of Vitis vinifera cv Nebbiolo plants subjected over years to moderate and long-lasting water stress events (WS-primed) depended on molecular memory phenomena or on resetting of stress-induced signals. To this aim, a combined multidisciplinary approach, involving eco-physiological, anatomical, biochemical and molecular analyses was adopted. First results revealed that WS-primed vines had reduced gas exchange in well-watered conditions, but at the end of WS imposition were able to maintain higher transpiration and assimilation rates with respect to unprimed plants. Moreover, WS-primed plants accumulated lower amounts of root abscisic acid and had higher content of resveratrol and viniferin, suggesting an increased antioxidant capacity that could help them in counteracting stress effects at the cellular level. WGBS analysis is ongoing to profile changes in DNA methylation landscapes in search of epigenetic signatures associated with specific transcriptome and physiological modifications.

In a future perspective, the gained information will deliver a predictive framework to estimate the impact of moderately dry periods on vine performance, considering memory-associated protective effects against drought.

Download the abstract

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Article

Authors

Amedeo Moine1, Paolo Boccacci1, Walter Chitarra1,2, Luca Nerva1,2, Giorgio Gambino1, Irene Perrone1, Chiara Pagliarani1*

1 Institute for Sustainable Plant Protection, National Research Council (IPSP-CNR), Strada delle Cacce 73, 10135 Torino (Italy)
2 Research Centre for Viticulture and Enology, Council for Agricultural Research and Economics (CREA-VE), Via XXVIII Aprile 26, 31015 Conegliano (Italy)

Contact the author*

Keywords

eco-physiology, recurring drought, priming, transcriptome reprogramming, epigenetic signature

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Techniques to study graft union formation in grapevine

Grapevines are grown grafted in most viticultural regions. Grapevine rootstocks are either hybrids or pure species of different American Vitis spp. (particularly V. berlandieri, V. rupestris and V. riparia), which were primarily used to provide root resistance to the insect pest Phylloxera. In addition to Phylloxera resistance, grapevine rootstocks were also selected in relation their resistance to various abiotic stress conditions. Future rootstocks should have the potential to adapt viticulture to climate change without changing the characteristics of the harvested product. However, high grafting success rates are an essential prerequisite to be able to use them with all the varieties. The objective of this work is to develop quantitative techniques to characterize graft union formation in grapevine.

Read More

Traçability of main mineral elements on the chain “soil-leaf-must-wine” in relation to “terroir” and vintage in Loire Valley(France)

Dans le cadre de recherches sur la mise en évidence et le déterminisme d’un «effet terroir »un réseau de parcelles du cépage Cabernet Franc greffé sur S04, a été suivi de 1979 à 1990 en Val de Loire (A.O.C. Saumur-Champigny, Chinon et Bourgueil). Des analyses chimiques (N,P, K, Ca, Mg, Fe, Mn, Zn) ont été réalisées sur le sol, les feuilles au stade véraison, les moûts en cours de maturation et à la vendange et enfin sur le vin, pour 18 sites (répartis dans 12unités terroirs de base) et 7 millésimes différents.

Read More

Development of a semi-controlled setup for manipulating drought and heat stress in open field trials

Drought and heat stress will pose challenges for the future of viticulture and wine quality, as grapevine biological processes are pushed beyond their optimum conditions. Efforts are increasing to study and predict the effects of drought spells and heatwaves on grapevine physiology and resulting harvest quality. This calls for the development of adequate systems to induce and manipulate the required stress, especially in open field trials where conditions are more difficult to control. We present a semi-controlled system for studying drought and heat stress in grapevine in the field.

Read More

LARGE SURVEY OF THE CHEMICAL COMPOSITION OF WINES RESULTING OF THE PRESSING OF RED WINE MARC. FIRST RESULTS

In the Bordeaux vineyards, press red wine represents about 15% of the volume of wines. Valuing this large volume of press wine is necessary from an economic point of view, of course, but also because of their organoleptic contribution to the blend. Nevertheless, there is a lack of recent knowledge on the composition of press wines. This work aims to establish an initial assessment of their composition (aromatic and polyphenolic) and to set up hypothesis on to the links with their sensorial identity.

Read More

Temperature effects on the biosynthesis of aroma compounds in glera grapes

This paper describes the first year results of a study that investigated the effects of altitude and related temperature parameters on the biosynthesis of aromas in the Italian cultivar Glera.

Read More