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31326 Castanet Tolosan CEDEX - France

Dernière mise à jour : Mai 2018

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PIAF Thesis 2020 :

  • Study of the dynamics of the transcriptional response of Black Poplar to water deficiency

Thesis supervisor: Philippe Label (DR2, INRAE),

co-supervisor Aurélie Gousset-Dupont (MCF, UCA),

co-supervisor Boris Fumanal (MCF, UCA)

Future climate change modelling predicts global warming in Western Europe associated with an increase in the frequency and severity of extreme weather events. In this context, exploring the response of plants to water scarcity is of great importance in terms of maintaining production and even the survival of individuals in their natural range.

Black poplar is a model for the study of woody plants by the scientific community (rapid growth, sequenced and annotated genome, etc.). An initial study carried out at UMR PIAF on different genotypes of contrasting black poplars (tolerant or avoidant strategy) has made it possible to identify and analyse the role of physiological plasticity in relation to their strategy for responding to drought. The aim of this thesis is to highlight the network of transcriptional regulations of the genes involved in the black poplar response to drought. For this purpose, transcriptomic analysis of RNA and microRNA in kinetics will be carried out on black poplar leaves of contrasting strategies subjected to progressive hydric deficiency. Particular attention will be paid to the regulatory network of genes encoding aquaporins and to the tissue localization of candidate gene expression. This study will ultimately make it possible to decipher the key molecular mechanisms of trees' response to drought.


Garavillon-Tournayre et al. 2018. Integrated drought responses of black poplar: How important is phenotypic plasticity? Physiol. Plant. 163(1):30-44