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 For this purpose, 30 genetic maps and QTL mapping data, available in the literature, were collected and combined with unpublished QTL for root traits obtained at EGFV lab.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…

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

The weak role of organic mulches in shaping bacterial communities in grapevine

The interest in sustainable and ecologic agricultural practices in grapevine has grown significantly in recent years in the context of ecological transition. Organic mulches are treatments that support the circular economy and positively affect the soil and the plant. They are an alternative to herbicides and other conventional practices since they may influence soil moisture, erosion, structure and weed control. However, their effects on the soil and must microbiota remain unknown.

Read More

Assessment of plant water consumption rates under climate change conditions through an automated modular platform

The impact of climate change is noticeable in the present weather, making water scarcity the most immediate mediator reducing the performance and viability of crops, including grapevine (Vitis vinifera L.). The present study developed a system (hardware, firmware, and software) for the determination of plant water use through changes in weight through a period. The aim is to measure the differences in grapevine water consumption in response to climate change (+4oC and 700 ppm) under controlled conditions. The results reveal a correlation between daily plant consumption rates and reference evapotranspiration (ETo).

Read More

Implications of the nature of organic mulches used in vineyards on grapevine water status, yield, berry quality and biological soil health  

Climate emergency is going to affect the agricultural suistainability, wine grapes being probably one of the crops more sensitive to environmental constraints. In this context, mitigation strategies such as the revalorization of agricultural wastes are paramount to cope with the current challenges. The use of organic mulches has been reported to reduce soil water evaporation and improve vine water status, reduce soil erosion, and increase soil organic matter with little impact on berry quality. However, less is known about their effects on the microbiote of vineyards.

Read More

Drought responses of grapevine cultivars under different environments

Using grapevine genetic diversity is one of the strategies to adapt viticulture to climate change. In this sense, assessing the plasticity of cultivars in their responses to environmental conditions is essential. For this purpose, the drought tolerance of Grenache, Tempranillo and Semillon cultivars grafted onto SO4 was evaluated at two experimental vineyards, one located in Valencia (Spain) and the other in Bordeaux (France). This was done by assessing gas exchange parameters, water relations and leaf hydraulic traits at the end of the season.

Read More