terclim by ICS banner
IVES 9 IVES Conference Series 9 The sensitivity to ABA affects the cross-talk between scion/rootstock in tolerant grapevines to drought stress

The sensitivity to ABA affects the cross-talk between scion/rootstock in tolerant grapevines to drought stress

Abstract

Drought caused by climate change has a dramatic incidence on the vineyard. Despite employing specific rootstocks tolerant to drought like 110 Richter, the vineyard continues to experience various losses, revealing the importance of the scion cultivar in the adaptation to drought stress. In this regard, Merlot, a widely cultivated grapevine, exhibited reduced drought tolerance compared to less cultivated varieties like Callet, a local cultivar originating from the Balearic Islands that demonstrated greater resilience to drought. Therefore, understanding the drought stress response in both cultivars and the cross-talk between scion and rootstock is key to unveiling possible differences that could affect to the adaptation to drought in vineyard. Plants from both cultivars grafted in the tolerant rootstock, 110 Richter, underwent different drought stages. For each stage, samples from leaves and roots were analyzed at metabolic, hormonal, physiological and transcriptomic level. The results revealed differences at most levels, increasing the production of osmolytes and antioxidant molecules involved in response to drought stress in Callet. However, hormonal analysis showed similar ABA production in both cultivars, indicating lower sensitivity to ABA in the case of Merlot compared to Callet. Moreover, the transcriptomic analysis revealed a modulation of genes involved in response to ABA and miRNA in leaves and roots of Callet, whereas in Merlot was mostly absent in roots, evidencing a poor cross-talk between Merlot and rootstock and increasing the value of the correct combination scion/rootstock for the vineyard adaptation to climate change.

Download the abstract

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Alberto Rodriguez-Izquierdo1*, David Carrasco1, María Ángeles Revilla2, Josefina Bota3, Rosa Arroyo-Garcia1†

1 Centro de Biotecnología y Genómica de Plantas (CBGP-INIA), CSIC – Universidad Politécnica de Madrid, Campus Montegancedo, Madrid, Spain
2 Department of Organisms and Systems Biology, Institute of Biotechnology of Asturias, University of Oviedo, Oviedo, Spain
3 Research Group on Plant Biology under Mediterranean Conditions, Departament de Biologia, Universitat de les Illes Balears (UIB) – Agro-Environmental and Water Economics Institute (INAGEA). Carretera de Valldemossa Km 7.5, 07122 Palma, Illes Balears, Spain

† In memoriam of Rosa Arroyo-Garcia.

Contact the author*

Keywords

rootstock, drought, cross-talk, transcriptomics, ABA

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Estimation of stomatal conductance and chlorophyll fluorescence in Croatian grapevine germplasm under water deficit    

Water deficit profoundly impacts the quality of grapes and results in considerable reductions in crop yield. First symptoms manifest with reduced stomatal conductance and transpiration, accompanied by the wilting of apical leaves and tendrils. So far, there is no available data on the water stress response in Croatian grapevine germplasm. Therefore, objective of this study was to determine influence of genotype and treatment on stomatal conductance (gsw), transpiration (E), electron transport rate (ETR), and quantum efficiency in light (PhiPS2).

Read More

Identifying best parameters to characterize genotypes capability of retaining adequate malic acid at harvest and in final wines

Under current climate change pressures, obtaining grapes with adequate acidity at harvest is one of the main challenges for growers, especially if the goal is producing sparkling wines. This issue arises from two main occurrences: i) higher temperatures enhance degradation of malic acid; ii) grape maturity may occur under suboptimal climatic conditions due to an advanced phenology.

Read More

Rootstocks: how the dark side of the vine can enlight the future?

Global challenges, including adaptation to climate change, decrease of the environmental impacts and maintenance of the economical sustainability shape the future of viticulture.

Read More

South Africa’s top 10 Sauvignon blanc wines. How do the chemical and sensory profiles compare?

FNB Top 10 Sauvignon Blanc competition, presented by the Sauvignon Blanc Interest Group of South Africa and sponsored by First National Bank, is the country’s foremost platform for producers of this cultivar to showcase and benchmark their wines. Wines entered in the competition originated from all over the winegrowing regions of the country and the winning wines showed good representation of quality South African Sauvignon blanc wines. The ten selected wines were subjected to various chemical analyses including volatile thiol and methoxypyrazine determination, while the sensory profile of each wine was determined using projective mapping.

Read More

Vine nitrogen status and the terroir effect: a study on cv. Doral in the Vaud vineyard (Switzerland)

A 3-year study was conducted in the Vaud vineyard (Switzerland) to evaluate the effects of « terroir » on the ecophysiology and fruit compostion of Vitis vinifera L. cv.

Read More