terclim by ICS banner
IVES 9 IVES Conference Series 9 Identifying physiological and genetic bases of grapevine adaptation to climate change with maintained quality: Genome diversity as a driver for phenotypic plasticity  (‘PlastiVigne’ project)

Identifying physiological and genetic bases of grapevine adaptation to climate change with maintained quality: Genome diversity as a driver for phenotypic plasticity  (‘PlastiVigne’ project)

Abstract

In the face of climate change, new grapevine varieties will have to show an adaptive  phenotypic plasticity to maintain production with erratic water resources, and still ensure the quality of the final product. Their selection requires a better knowledge of the genetic basis of those traits and of the elementary processes involved in their variability. ‘PlastiVigne’, an emblematic project of the Vinid’Occ key challenge, funded by the Occitanie Region (France), tackles this issue with innovative genomic and physiological tools implemented on a unique panel of grape genetic resources representing the genetic diversity of Vitis vinifera. A graph-pangenome is developed from a representative set of high-quality genomes to study the extent and impact of structural genome variations and chromosomal rearrangements in the rapid adaptation capacity of grapevine. We will characterize structural variants potentially related to differential expression or alternative spicing of candidate genes for stress tolerance in individual grape berries. Markers derived from structural variants mapped on the pangenome, as well as new sets of SNP markers, will allow the identification of genomic regions associated to leaf water and carbon balance under several water stress regimes, its  plasticity, adaptation traits like phenology, genomic vulnerability, and to some traits related to the aromatic potential of grape berries. They represent new tools for grape breeding. More detailed functional analysis of leaf and berry phenotypic plasticity in response to water deficit will be then conducted, on a subset of contrasted varieties. We will present the project strategy and highlight a few preliminary results.

Download the abstract

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Dominique This 1, Roberto Bacilieri1, Eva Coindre1,4, Olivia di Valentin2, Baptiste Pierre1, Flora Tavernier1, Thomas Baerenzung dit Baron 3, Gautier Sarah1, Vincent Segura 1, Agnès Doligez1, Charles Romieu1, Thierry Lacombe1, Sylvain Santoni1, Christine Tollon-Cordet1, Audrey Weber1, Aude Coupel-Ledru 4, Thierry Simonneau4, Benoit Pallas4, Gaelle Rolland4, Stéphane Berthezène4, Romain Boulord4, Julien Pirrello2, Farid Regad2, Olivier Geffroy 3, Olivier Rodrigues3, Aurélie Roland5, Somaya Sachot5, Nicolas Saurin6, Emmanuelle Garcia-Adrados6, Cécile Marchal7, Sandrine Dedet7, Anne Mocoeur7, Alban Jacques3, Patrice This1*

1 AGAP Institute, Univ Montpellier – CIRAD – INRAE, Institut Agro, F-34398 Montpellier, France
2 LRSV,  Université de Toulouse – INP – Purpan, 31076 Toulouse, France
3 PPGV, Université de Toulouse -, INP – Purpan, 31076 Toulouse, France
4 LEPSE, Univ Montpellier – INRAE – Institut Agro, Montpellier, France
5 SPO, INRAE – Institut Agro -University Montpellier, 34060 Montpellier, France
6 Domaine de Pech Rouge, Univ Montpellier – INRAE, F-11430 Gruissan, France
7 Domaine de Vassal, INRAe, route de Sète, 34340 Marseillan, France

Contact the author*

Keywords

Vitis vinifera, plasticity, pangenome, water/carbon balance, aroma

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

The exploitation of Croatian grapevine genetic resources for the breeding of new resistant cultivars 

Croatian viticulture is mainly based on native grapevine varieties susceptible to various diseases and pests, which leads to unsustainable use of large amounts of pesticides. The sustainable development of viticulture in the future will only be possible by increasing the resistance of the grapevine through the development of new resistant varieties. Breeding programs have been launched in the leading wine-growing countries to develop resistant varieties possessing high-quality levels. Native cultivars from Croatia are not included in the breeding programs of other countries.

Read More

Characterization of commercial enological tannins and its effect on human saliva diffusion

Commercial oenological tannins (TECs) are widely used in the wine industry. TECs are rich in condensed tannins, hydrolyzable tannins or a mixture of both. Wine grapes are a important source of proanthocyanidins or condensed tannins while oak wood possess a high concentration of hydrolyzable tannins (Obreque-Slier et al., 2009). TECs contribute with the antioxidant capacity of wine, catalyze oxide-reduction reactions and participate in the removal of sulfur compounds and metals.

Read More

Essai de maîtrise optimisée de la vigueur de deux clones de chenin sur schistes verts du carbonifère en zone A.O.C. Coteaux du Layon

Les buts principaux de cet essai, sont la mise en évidence des effets traitement agroviticole et millésime, par une recherche de liens entre les données vendanges et sensorielles des vins issus.

Read More

Hplc-ms analysis of carotenoids as potential precursors for 1,1,6-trimethyl-1,2-dihydronaphthalene (TDN) in riesling grapes

In recent years, an undesirable premature “aged” character has been noticed in a growing number of young Riesling wines, associated with extreme weather conditions leading to increased radiation intensity and/ or sun exposure of grapes.

Read More

Sélection génétique des variétés originelles d’Arménie, berceau de la viticulture mondiale

Armenia, a small country in the South of the Caucasus, has been rediscovering its wine-growing past since the discovery in 2007 of archaeological wine-growing remains dating back around 8,000 years. They are among the oldest in the world. Despite a great diversity of grape varieties, Armenian winegrowers did not have sufficiently organized genetic collections to produce plants and satisfy the growing demand for planting.

Read More