Phytomanagement des sols pollués dans un contexte de changement climatique : étude des réponses du sorgho aux multi-stress (sécheresse et pollution) en utilisant des approches omiques // Phytomanagement of polluted soils in a context of climate change: in
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ABG-136968
ADUM-71891 |
Thesis topic | |
| 2026-03-21 | Other public funding |
Université du Littoral Côte d'Opale
DUNKERQUE - Les Hauts de France - France
Phytomanagement des sols pollués dans un contexte de changement climatique : étude des réponses du sorgho aux multi-stress (sécheresse et pollution) en utilisant des approches omiques // Phytomanagement of polluted soils in a context of climate change: in
- Earth, universe, space sciences
sorgho, sols pollués, phytoremédiation, approches omiques, changement climatique, ETM
sorgho, polluted soils, phytoremediation, omic approachs, climate change, MTE
sorgho, polluted soils, phytoremediation, omic approachs, climate change, MTE
Topic description
Le changement climatique, marqué par l'intensification des sécheresses, rend la réhabilitation durable des sites pollués par les méthodes de phytomanagement plus difficile. Les interactions entre déficit hydrique et contamination métallique, ainsi que leurs effets sur le microbiote tellurique, restent mal comprises, la plupart des études traitant ces stress séparément. Or, leur combinaison génère des effets délétères sur les espèces végétales et les communautés microbiennes rhizosphériques associées. En outre, les mécanismes impliqués dans ces effets demeurent encore mal connus. Ces incertitudes limitent le développement des phytotechnologies. Cette thèse vise à relever ce défi en développant des stratégies de phytomanagement adaptées à des multi- stress combinant à la fois la pollution (ex : éléments traces métalliques (ETM)) et déficit hydrique. Le sorgho, espèce résiliente, sera étudié en interaction avec des champignons mycorhiziens, connus pour améliorer le statut hydrique et la tolérance des plantes hôtes à la pollution métallique. Une approche multi-omiques permettra d'élucider les mécanismes régissant l'adaptation du continuum plante–microbiote et de sélectionner les génotypes les plus performants, tout en évaluant leur implication dans la restauration fonctionnelle des sols et le rétablissement de leurs services écosystémiques (stockage du carbone, fertilité, régulation de l'eau …).
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Climate change, marked by the intensification of droughts, makes the sustainable rehabilitation of polluted sites through phytomanagement methods increasingly difficult to implement. Interactions between water deficit and metal contamination, as well as their effects on soil microbiota, remain poorly understood, as most studies address these stresses separately. Yet their combination generates deleterious effects on plant species and associated rhizosphere microbial communities, and the mechanisms involved are still largely unknown. All these uncertainties limit the development of phytotechnologies. This thesis aims to address this challenge by developing phytomanagement strategies adapted to multi-stress conditions combining both trace element (TE) pollution and water deficit. Sorghum, a resilient species, will be studied in interaction with mycorrhizal fungi, known to improve plant water status and enhance host tolerance to metal pollution. A multi-omics approach will be used to elucidate the mechanisms governing the adaptation of the plant–microbiome continuum and to identify the most efficient genotypes, while also assessing their contribution to functional soil restoration and the recovery of ecosystem services (e.g., carbon storage, water regulation, fertility…).
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Début de la thèse : 01/10/2026
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Climate change, marked by the intensification of droughts, makes the sustainable rehabilitation of polluted sites through phytomanagement methods increasingly difficult to implement. Interactions between water deficit and metal contamination, as well as their effects on soil microbiota, remain poorly understood, as most studies address these stresses separately. Yet their combination generates deleterious effects on plant species and associated rhizosphere microbial communities, and the mechanisms involved are still largely unknown. All these uncertainties limit the development of phytotechnologies. This thesis aims to address this challenge by developing phytomanagement strategies adapted to multi-stress conditions combining both trace element (TE) pollution and water deficit. Sorghum, a resilient species, will be studied in interaction with mycorrhizal fungi, known to improve plant water status and enhance host tolerance to metal pollution. A multi-omics approach will be used to elucidate the mechanisms governing the adaptation of the plant–microbiome continuum and to identify the most efficient genotypes, while also assessing their contribution to functional soil restoration and the recovery of ecosystem services (e.g., carbon storage, water regulation, fertility…).
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Début de la thèse : 01/10/2026
Funding category
Other public funding
Funding further details
ANR Financement d'Agences de financement de la recherche
Presentation of host institution and host laboratory
Université du Littoral Côte d'Opale
Institution awarding doctoral degree
Université du Littoral Côte d'Opale
Graduate school
585 Sciences, Technologie, Santé
Candidate's profile
Le (la) candidat(e) devra avoir une formation en biologie végétale et en écologie microbienne avec un intérêt pour l'agroécologie.
Des connaissances en biologie moléculaire, NGS (extraction et purification d'ADN/ARN, analyse bio-informatique de séquences) sont fortement recommandées, ou une forte motivation pour se former à ces méthodes.
Des compétences en analyse statistique (idéalement avec R ou Python) seront fortement appréciées, ou à défaut des notions de bases et une volonté à les développer.
Le ou la candidat (e) devra avoir un bon niveau en anglais à l'oral et à l'écrit pour communiquer ses résultats via différents moyens
The candidate should have a background in plant biology and microbial ecology, with an interest in agroecology. Proficiency in molecular biology and NGS (DNA/RNA extraction and purification, bioinformatic sequence analysis) is highly recommended; alternatively, the candidate must demonstrate strong motivation to train in these methods. Skills in statistical analysis (ideally using R or Python) will be highly valued, or at the very least, basic knowledge and a willingness to develop these skills. The candidate must have a good command of English, both written and spoken, to effectively communicate their results through various channels.
The candidate should have a background in plant biology and microbial ecology, with an interest in agroecology. Proficiency in molecular biology and NGS (DNA/RNA extraction and purification, bioinformatic sequence analysis) is highly recommended; alternatively, the candidate must demonstrate strong motivation to train in these methods. Skills in statistical analysis (ideally using R or Python) will be highly valued, or at the very least, basic knowledge and a willingness to develop these skills. The candidate must have a good command of English, both written and spoken, to effectively communicate their results through various channels.
2026-04-30
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JobRef. 136133, Ile-de-France , France
Association Bernard Gregory ABGFormateur.rice
Scientific expertises :Open to all scientific expertises
Experience level :Any
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Thesis topicRef. 136882NANTES , Pays de la Loire , FranceAquasys/Université Gustave Eiffel
Thèse CIFRE : De la prévision à la prise de décision sous incertitude : vers une meilleure gestion des ressources en eau (LabCom aiQua)
Scientific expertises :Earth, universe, space sciences
