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INRAE

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Last update: May 2021

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Ecophysiologie et Génomique Fonctionnelle de la Vigne - Umr 1287 EGVF

UMR 1287 - EGVF

Unité Mixte de Recherche (INRA, ENITAB, Université de Bordeaux)

Ecophysiologie et Génomique Fonctionnelle de la Vigne
I.S.V.V Bordeaux, 210 Chemin de Leysotte

33882 Villenave d’Ornon Cedex, France

PhD Offer

Genetic diversity of root traits in Vitis sp. and potential for breeding grapevine rootstocks

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© https://commons.wikimedia.org/wiki/File:Greffe_omega.JPG
Thesis period: from the 1 st of january 2023 to the 31st of December 2025

PhD subject

Genetic diversity of root traits in Vitis sp. and potential for breeding grapevine rootstocks

(Graduate Research School: Sciences de la Vie et de la Santé)
Supervisor: Marina de Miguel Vega

Thesis period: from the 1 st of january 2023 to the 31st of December 2025

Background: Since the end of the19th century, the European vine Vitis vinifera L. has been grown
grafted in most vineyards around the world due to its susceptibility to Phylloxera. The rootstocks
used today are accessions or hybrids of American species of Vitis sp. naturally resistant to
Phylloxera. Most of the rootstocks currently in use were selected over 100 years ago and have a
narrow genetic background. In the current context of global change, new threats may limit the
sustainability and production of viticulture. In particular, drought is one of the most important risks
in the context of climate change. It is therefore necessary to provide new genetic resources and
next-generation breeding tools, assisted by molecular methods, to improve the performance of
rootstocks today and in the future.

Objectives: the main objective of the PhD project is to characterize the genetic variability of root
development and functioning under drought conditions in genotypes of wild species of Vitis sp. with
potential interest for rootstocks breeding. To do this, three specific objectives will be addressed:
1. Evaluate the response to drought in Vitis species largely unexplored for its use as rootstocks from
an integrative approach.
2. Establish the link between genetic variation of metabolism and genetic variation of complex root
traits involved in drought tolerance of wild species of Vitis sp.
3. Determine the potential for using new genetic resources in the rootstocks breeding program.

Methods:
- Conducting water deficit experiments.
- Root phenotyping at different ontogenetic stages.
- Metabolomic study of the roots responses to water deficit.
- Estimation of quantitative genetics parameters.

Education and skills: We are seeking a highly motivated candidate with skills in genetics and an
interest for biochemistry and/or plant physiology. An aptitude for the analysis of large omics
datasets (metabolomics) is desired. Experience with laboratory and greenhouse experimental work
will be appreciated.

Place of work: Institute of Vine and Wine Sciences, 210, chemin de Leysotte, 33882 Villenave
d'Ornon, France. UMR Ecophysiologie et Génomique Fonctionnelle de la Vigne. The EGFV lab
ofers the necessary scientific and technical environment for the PhD projetc.
https://www6.bordeaux-aquitaine.inrae.fr/egfv/
Salary: €1,874 monthly (before taxes).
Contact: marina.de-miguel@inrae.fr
Candidates should send a CV and a cover letter. Call for applications open until the position is
filled.