terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Identification of important genomic regions controlling resistance to biotic and abiotic stresses in Vitis sp. through QTL meta-analysis

Identification of important genomic regions controlling resistance to biotic and abiotic stresses in Vitis sp. through QTL meta-analysis

Abstract

In the context of global change, the environmental conditions are expected to be more stressful for viticulture. The choice of the rootstock may play a crucial role to improve the adaptation of viticulture to new biotic and abiotic threats (Ollat et al., 2016). However, the selection of interesting traits in rootstock breeding programs is complex because of the combination of multiple targets in a same ideotype. In this sense, the integration of studies about the genetic architecture for desired biotic and abiotic response traits allow us to identify genomic regions to combine and those with interesting pleiotropic effects. In this work we aimed to study the genetic determinism of several traits related to disease resistance and tolerance to abiotic stresses in Vitis sp. with a potential interest to be used as grapevine rootstocks. For this purpose, 30 genetic maps and QTL mapping data, available in the literature, were collected and combined with unpublished QTL for root traits obtained at EGFV lab. This information was used to construct a dense consensus genetic map of Vitis sp.. Then, a QTL meta-analysis was conducted using the software Biomercator. The obtained consensus genetic map, comprising information from different Vitis sp. is a useful genetic resource for translational genetics. In addition, the identified meta-QTLs, that combined information from independent studies, allowed to reduce QTL confidence intervals, notably for tolerance to abiotic stress traits. These results, highlight the interest of QTL meta-analysis to narrow-down the position of loci controlling desired traits for rootstock breeding programs, as previously proved for scions (Delfino et al., 2019).

References:

Ollat N. et al. (2016) Grapevine rootstocks: Origins and perspectives. Acta Horticulturae, 1136: 11-22. 10.17660/ActaHortic.2016.1136.2
Delfino, P. (2019) Selection of candidate genes controlling veraison time in grapevine through integration of meta-QTL and transcriptomic data. BMC Genomics, 20:1. https://doi.org/10.1186/s12864-019-6124-0

DOI:

Publication date: October 6, 2023

Issue: ICGWS 2023

Type: Poster

Authors

Elsa Chedid1*, Pierre Gastou2, Jean-Pascal Tandonnet1, Philippe Vivin1, Sarah Cookson1, Pierre-François Bert1, Nathalie Ollat1, Elisa Marguerit1, Marina de Miguel1

1 EGFV, Univ. Bordeaux, Bordeaux Sciences Agro, INRAE, ISVV, 33882 Villenave d’Ornon, France
2 UMR SAVE, INRAE, BSA, ISVV, 33882 Villenave d’Ornon, France

Contact the author*

Keywords

biotic stress, abiotic stress, meta-analysis, QTL, Vitis sp

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Volatile composition of Cabernet Sauvignon wines from Argentina, Portugal and Spain

Cabernet Sauvignon is one of the most cultivated grape varieties worldwide being grown in different environmental conditions due to its excellent adaptability. Volatile compounds deeply contribute to the sensory properties of wines therefore to wine quality. The aim of this work was to compare the aroma profile of Cabernet Sauvignon wines from different geographical areas and climatic conditions, namely from Argentina, Portugal and Spain, from the vintage 2022. In addition, the volatile composition of the Cabernet Sauvignon Portuguese wines from three vintages was evaluated.

Read More

Induction of polyphenols in seedlings of Vitis vinifera cv. Monastrell by the application of elicitors

Contamination problems arising from the use of pesticides in viticulture have raised concerns. One of the alternatives to reduce contamination is the use of elicitors, molecules capable of stimulating the natural defences of plants, promoting the production of phenolic compounds (PC) that offer protection against biotic and abiotic stress. Previous studies on Cabernet-Sauvignon seedlings demonstrated that foliar application of elicitors methyl jasmonate (MeJ) and benzothiadiazole (BTH) increased proteins and PC involved in grapevine defence mechanisms. However, no trials had been conducted on Monastrell seedlings, a major winegrape variety in Spain.

Read More

Wine racking in the winery and the use of inerting gases

The O2 uptake in the different winemaking processes is generally considered to be negative for the sensory characteristics of white and rosé wines. Wine racking is a critical point of O2 uptake, as the large surface area of the wine exposed during this operation and the inability to maintain an effective inert gas blanket over it.
The objective was to study O2 uptake during the racking of a model wine without using inert gases and to compare it with the purging of the destination tank with different inert gases.

Read More

Uncovering the interplay between Copper and SO2 tolerance in Saccharomyces cerevisiae

[lwp_divi_breadcrumbs home_text="IVES" use_before_icon="on" before_icon="||divi||400" module_id="publication-ariane" _builder_version="4.20.4" _module_preset="default" module_text_align="center" module_font_size="16px" text_orientation="center"...
Read More

Nitrogen forms and Iron deficiency: how do Grapevine rootstocks responses change?

Grapevine rootstocks provide protection against environmental biotic and abiotic stresses. Nitrogen (N) and iron (Fe) are growth-limiting factors in many crop plants due to their effects on the chlorophyll and photosynthetic characteristics. Iron nutrition of plants can be significantly affected by different nitrogen forms through altering the uptake ratio of cations and anions, and changing rhizosphere pH. The aim of this study was to investigate the response mechanisms of grapevine rootstocks due to the interaction between different nitrogen forms and iron uptake.

Read More