Alia DELLAGI Professeure

Acquisition d'Azote dans les Systèmes Symbiotiques Plantes-Microbes

CV Alia DELLAGI Professor In Plant functional genomics, Plant-microbe
interactions, Plant nutrition

Nitrogen (N) is the major limiting factor in agriculture and the largest input cost for non-leguminous crops, which can account for up to 60% of the production costs. For maize, yield performance is mainly dependent on N fertilization. However, this extensive use of N affects ecosystems and represents an important environmental threat. Nitrogen nutrition may be optimized with the help of soil-borne microbes such as nitrogen fixing bacteria or mycorrhizal fungi. Optimizing the use of N by plants using soil-borne microbes is the focus of our projects. We develop genomic and physiological approaches to tackle this issue.

Professional career:

  • Since 2018        Professor at AgroParisTech in Institut Jean-Pierre Bourgin UMR1318, (Versailles, France).
  • 2012-2017         Associate professor at AgroParisTech in Institut Jean-Pierre Bourgin UMR1318, (Versailles, France).
  • 2000-2012         Associate professor at  AgroParisTech (previously INA-PG) in Laboratory of Plant-Pathogen Interactions, (Paris, France).
  • 1997-1999        EU funded Postdoc at SCRI (now James Hutton Institute, Dundee, Scotland, UK).
  • 1993-1997        PhD at INA-PG in Plant Molecular Pathology (now AgroParisTech Paris France).    


  • 2010      Habilitation to supervise research (HDR) at Université Paris Sud, France.
  • 1997      PhD at INA-PG, co-financed INRA and Tunisian Ministry of Education Paris, France.
  • 1993      Master’s degree, Diplôme d’Agronomie Approfondie (DAA) at INA-PG, Paris, France.
  • 1992      Diploma of Engineer in Agronomy, at Institut National Agronomique de Tunisie, Tunisia.    
Administration Responsibilities

  • Deputy director of the Laboratory of Excellence of Saclay Plant Sciences.
  • Appointed to the Specialist Scientific Committee 2 of the the French National Research Institute for Sustainable Development (2020-2024).
  • Appointed to the administration board of the French Society of Phytopathology (2012-2019).
  • Appointed to the French Agriculture ministry lecturers evaluation board (CNECA 5, 2012-2018).
  • Appointed  to the Commission d'évaluation des ingénieurs à l'INRA  (2009-2017).
  • Responsible of Plant Sciences Master program of Paris-Saclay  University.
  • Responsible of the AgroParisTech Sustainable production 1 Master 1 Program (2015-2020).    
Major publications of the last 5 years  

  • Rigault M., Citerne  S., Masclaux-Daubresse C. Dellagi A. (2021) Salicylic acid is a key player of Arabidopsis autophagy mutant susceptibility to the necrotrophic bacterium Dickeya dadantii. Sci Rep 11:3624.
  • Verly C., Djoman  A.C.R., Rigault M., Giraud F., Rajjou L., Saint-Macary ME., Dellagi A. (2020) Plant defense stimulator mediated defense activation Is affected by nitrate fertilization and developmental stage in Arabidopsis thaliana. 11:583. Frontiers in Plant Science 11:583.
  • Dellagi A., Quillere I, Hirel B., (2020) Beneficial soil borne bacteria and fungi: a promising way to improve plant nitrogen acquisition. Journal of Experimental Botany.
  • Liu L., Gueguen-Chaignon V., Gonçalves IR, Rascle C, Rigault M, Dellagi A., Loisel E., Poussereau N., Rodrigue A., Terradot L., Condemine G. (2019) A secreted metal-binding protein protects necrotrophic phytopathogens from reactive oxygen species. Nature comm. 24:4853.
  • Rigault M., Buellet A., Masclaux-Daubresse C., Fagard M., Chardon F, Dellagi A. (2017) Quantitative methods to assess differential susceptibility of Arabidopsis thaliana natural accessions to Dickeya dadantii. Frontiers in Plant Sciences 8:394. 6.    
  • Aznar A, Chen NW, Thomine S, Dellagi A. (2015) Immunity to plant pathogens and iron homeostasis. 240:90-7. 7.     Aznar A. et Dellagi A. (2015) New insights into the role of siderophores as triggers of  plant immunity: what can we learn from animals. J. Exp. Bot. 66:3001-10. 8.    
  • Aznar A, Patrit O, Berger A, Dellagi A (2015) Alterations of iron distribution in Arabidopsis tissues infected by Dickeya dadantii. Mol. Plant Pathol. 16:521-8.  


  • 2019 : V/Réf.:N/Réf.: MA/HC – FR 19 15194 DETECTION DE NPR1 FRANCE - Demande de brevet n° 19 15194 Dépôt du 20 décembre 2019 Aux noms de STAPHYT, Institut National De La Recherche Agronomique INRA et de l’institut Des Sciences Et Industries Du Vivant Et De L'environnement. Inventors : Dellagi A, Verly C, Rajjou L, Giraud F, Saint- Macary ME. Internationale extension under process.