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…

Monitoring vineyard canopy structure by aerial and ground-based RGB and multispectral imagery analysis

Unmanned Aerial Vehicles (UAVs) are increasingly used to monitor canopy structure and vineyard performance. Compared with traditional remote sensing platforms (e.g. aircraft and satellite), UAVs offer a higher operational flexibility and can acquire ultra-high resolution images in formats such as true color red, green and blue (RGB) and multispectral. Using photogrammetry, 3D vineyard models and normalized difference vegetation index (NDVI) maps can be created from UAV images and used to study the structure and health of grapevine canopies. However, there is a lack of comparison between UAV-based images and ground-based measurements, such as leaf area index (LAI) and canopy porosity.

Read More

The role of protein-phenolic interactions in the formation of red wine colloidal particles

Colloids play a crucial role in red wine quality and stability, yet their composition and formation mechanisms remain poorly understood.

Read More

Comparison of the skin resistance of several grape varieties in relation to their physico-chemical properties

The purpose of this study is to compare the skin resistance (SR) of the grapes with physico-chemical propertiess using a stong dataset and multidimentional statistical analysis .
A recent study has shown the role skin resistance plays against pest invasion but skin resistance could be a useful agronomic parameter, for example in the choice of the type of winemaking, by influencing the quantity of juice during crushing and maceration.

Read More

Méthode et outils de valorisation des terroirs en cave coopérative

Depuis le début des années 90, les vignerons des Caves Coopératives de l’Appellation “Côtes du Rhône” se sont penchés, au sein des structures de réflexion du Syndicat Général, sur deux axes de réflexion:
– Détermination des critères de sélection et de rémunération différenciée des apports de vendange;
– Organisation des sélections de vendanges sur la base des terroirs afin d’augmenter quantitativement le potentiel de sélection au sein de l’unité de production.

Read More

Monitoring grapevine water status using Landsat 8 images: a two-year case study in a Merlot vineyard

Viticulture needs for spatial and temporal information are increasing to improve vineyard management, especially concerning water efficiency. Remote sensing, particularly from satellites, can be a powerful tool to assess vineyard characteristics such as vigor or water status in space-time. In this study, we use Landsat 8, an American Earth observation satellite with six bands from the visible (VIS) to the Short-Wave Infrared (SWIR) domains with 30m spatial resolution and two thermal bands with 100m spatial resolution.

Read More