Affiliation entity
CPNFB Chemistry of Fungal and Bacterial Natural Products
Accreditation to supervise research
Pathologie des algues, génomique fonctionnelle


claire.gachon [at]
(+33) 1 40 79 31 33
(+33) 1 71 21 46 66

43 rue Buffon

24 allée des crapauds

75005 Paris

Responsibilities outside unit

Head of the UMS 2700


Research activities: I specialise in the establishment of model interactions involving eukaryotic pathogens and their macro- or microalgal host(s). I lean on interdisciplinary array of tools, including biochemistry, histology, genomics to tackle questions ranging from algal ecology to the physiology and evolution of parasites in aquatic (marine and freshwater) systems, disease management and biosecurity in commercial algal cultivation. I have specific expertise in the oxidative stress, programmed cell death, and more generally the functional annotation and characterisation of the defence genes of algae. More recently, I have started transferring this expertise to disease management in commercial facilities, and to the development of biosecurity for algal aquaculture.


list_of_publications_20210701.pdf Format (Pdf) - 59.87 KB


  • Brakel Janina, Sibonga Rema C., Dumilag Richard V., Montalescot Valeria, Campbell Iona, Cottier‐Cook Elizabeth J., Ward Georgia, Le Masson Virginie, Liu Tao, Msuya FlowerE., Brodie Juliet, Lim Phaik‐Eem & Gachon Claire M. M., July 2021Exploring, harnessing and conserving marine genetic resources towards a sustainable seaweed aquaculture. PLANTS, PEOPLE, PLANET vol. 3, n° 4, p. 337-349
    2572-2611, 2572-2611
  • Strittmatter Martina, Rad-Menéndez Cecilia & Gachon Claire M. M., November 2020Cryopreservation of the parasitic and saprophytic life stage of the blastocladialean pathogen Paraphysoderma sedebokerense infecting the green algae Haematococcus pluvialis and Scenedesmus dimorphus. Host–pathogen interactions involving microalgae have attracted more and more interest over the past decade. In order to… Phycologia vol. 59, n° 6, p. 566-570 Publisher: Taylor & Francis _eprint:
  • Kumar Yushanthini Nair, Poong Sze-Wan, Gachon Claire, Brodie Juliet, Sade Ahemad & Lim Phaik-Eem, September 2020Impact of elevated temperature on the physiological and biochemical responses of Kappaphycus alvarezii (Rhodophyta). The eucheumatoids Kappaphycus and Eucheuma are cultivated in tropical or subtropical regions for the production of carrageenan,… PLOS ONE vol. 15, n° 9, e0239097 Publisher: Public Library of Science
  • Badstöber Julia, Gachon Claire M. M., Ludwig-Müller Jutta, Sandbichler Adolf M. & Neuhauser Sigrid, August 2020Demystifying biotrophs: FISHing for mRNAs to decipher plant and algal pathogen–host interaction at the single cell level. Plant-pathogen interactions follow spatial and temporal developmental dynamics where gene expression in pathogen and host… Scientific Reports vol. 10, n° 1, p. 14269 Bandiera_abtest: a Cc_license_type: cc_by Cg_type: Nature Research Journals Number: 1 Primary_atype: Research Publisher: Nature Publishing Group Subject_term: Parasitism;Pathogens;Plant symbiosis Subject_term_id: parasitism;pathogens;plant-symbiosis
  • Vallet Marine, Chong Yee-Meng, Tourneroche Anne, Genta-Jouve Grégory, Hubas Cédric, Lami Raphael, Gachon Claire M. M., Klochkova Tatyana, Chan Kok-Gan & Prado Soizic, July 2020Novel α-Hydroxy γ-Butenolides of Kelp Endophytes Disrupt Bacterial Cell-to-Cell Signaling. Frontiers in Marine Science vol. 7, , p. 601
  • Murúa Pedro, Müller Dieter G., Etemadi Mohammad, van West Pieter & Gachon Claire M. M., June 2020Host and pathogen autophagy are central to the inducible local defences and systemic response of the giant kelp Macrocystis pyrifera against the oomycete pathogen Anisolpidium ectocarpii. Kelps are key primary producers of cold and temperate marine coastal ecosystems and exhibit systemic defences against pathogens… The New Phytologist vol. 226, n° 5, p. 1445-1460
  • Tourneroche Anne, Lami Raphaël, Burgaud Gaëtan, Domart-Coulon Isabelle, Li Wei, Gachon Claire, Gèze Marc, Boeuf Dominique & Prado Soizic, 2020The Bacterial and Fungal Microbiota of Saccharina latissima (Laminariales, Phaeophyceae). Frontiers in Marine Science vol. 7, , p. 587566
  • Monteiro João P., Rey Felisa, Melo Tânia, Moreira Ana S. P., Arbona Jean-François, Skjermo Jorunn, Forbord Silje, Funderud Jon, Raposo Diogo, Kerrison Philip D., Perrineau Marie-Mathilde, Gachon Claire, Domingues Pedro, Calado Ricardo & Domingues M. Rosário, January 2020The Unique Lipidomic Signatures of Saccharina latissima Can Be Used to Pinpoint Their Geographic Origin. The aquaculture of macroalgae for human consumption and other high-end applications is experiencing unprecedented development… Biomolecules vol. 10, n° 1, E107