Séminaire INTERNE
3 Présentations des étudiants de 2ème année
Jeudi 18 janvier 2024
Amphi 2 Bât. 2Bis à 14h00
Catharina Utami
Supervisors: Cyrille Violle, Denis Vile, François Vasseur, team ECOPAR (Cefe – CNRS)
Ecological and evolutionary strategies of A. thaliana across its geographic range: Tradeoffs between dispersal-competitive ability
Dispersal and competition are important mechanisms allowing species persistence and maintenance of biodiversity in variable environments. Natural variation in A. thaliana has been well documented along with its global range of distribution. In this study, I explored the variation of dispersal-competitive abilities and the potential trade-offs in order to elucidate the pattern behind the large intraspecific variations and broad distribution of the species.
Timothy Mozzanino
Supervisor: Antoine Martin, team SIRENE
Natural genetic variation studies in plants in response to elevated atmospheric CO2 levels.
The rise in atmospheric CO2 concentration is one of the major drivers of climate change. By the end of the century, atmospheric CO2 content could reach 1000 ppm, more than twice as much as at the beginning of the century (IPCC, 2021). In the vast majority of plants, large-scale studies have shown that elevated CO2 (eCO2) has a negative impact on mineral content. The decline in the mineral status of plants (decrease in the content of mineral elements) is still largely unexplained, but has serious consequences for food safety. Several elements suggest that solutions exist to mitigate or even eliminate the negative effect of eCO2 on the mineral status of plants. One of the main avenues lies in the exploration of the natural genetic variability of plants. A GWAS made in our team has identified genetic variants associated with better mineral status under eCO2 conditions. I will present here, the functional characterization of two genes highlighted by the GWAS. A GATA transcription factor involved in N nutrition, and a putative iron-citrate transporter involved in Fe nutrition.
Eva Coindre
Supervisors Aude Couple-Ledru, Benoît Pallas (team ETAP) et Vincent Segura (AGAP institute).
Analysis of the genetic variability and determinism of water functioning and carbon metabolism under soil water deficit in grapevine
A diversity panel of 250 grapevine varieties was phenotyped under three hydric conditions (from well irrigated to drought conditions) on the PhenoARCH phenotyping platform. Chlorophyll fluorescence and near-infrared spectroscopy data were used to build predictive models for physiological traits linked to water and leaf photosynthesis. Genome Wide Association Studies will be carried out on these different traits to highlight genetic regions of interest linked to the response to water deficit.
Contacts IBIP :
Séminaires à venir : https://www1.montpellier.inra.fr/wp-inra/bpmp/actualites/ rubrique Séminaires (2020-2025)
Sabine Zimmermann (sabine.zimmermann@cnrs.fr)
Justine Drouault (justine.drouault@inrae.fr)
Jessica Bertheloot (jessica.bertheloot@inrae.fr)
Chantal Baracco (chantal.baracco@inrae.fr)