Senior researcher CNRS

Marine microbiologist

Fred Partensky

Frédéric Partensky is a specialist of the ecology and genomics of marine picocyanobacteria, the smallest and most abundant microorganisms of the marine phytoplankton.



Senior scientist at the French National Center for Scientific Research (CNRS)



2000      Habilitation to supervise students (Habilitation à Diriger des Recherches)
1989      PhD University of Paris VI in Biological Oceanography. Station Biologique de Roscoff, France. Advisor: D. Vaulot. (French Research & Education Ministry grant)



1989-1990 Bedford Institute of Oceanography (Dartmouth, Canada). Advisor: W.K.W Li (NSERC grant)    



2009 " Ocean Sciences Award" ("Prix des Sciences de la Mer"), attributed by the French Academy of Sciences



    Ecological distribution and diversity of marine picocyanobacteria
    Genomics and evolution of light-harvesting complexes in marine picocyanobacteria




  1. Dufour L., Gouriou B., Clairet J., Ratin M., Garczarek L. & Partensky F. Differential acclimation kinetics of the two forms of Type IV chromatic acclimaters occurring in marine Synechococcus cyanobacteria. Frontiers in Microbiology. 15: 1349322.

  2. Doré H., Guyet U., Leconte J., Farrant G.K., Alric B., Ratin M., Ostrowski M., Ferrieux M., Brillet-Guéguen L., Hoebeke M., Siltanen J., Le Corguillé G., Corre E., Wincker P., Scanlan D.J., Eveillard D., Partensky F., Garczarek L. Differential global distribution of marine picocyanobacteria gene clusters reveals distinct niche-related adaptive strategies. The ISME Journal. https://doi-org/10.1038/s41396-023-01386-0

  3. Carrigee L.A., Frick J.P., Liu X., Karty J.A., Trinidad J.C., Tom I.P., Yang X., Dufour L., Partensky F. & Schluchter W.M. (2022) The phycoerythrobilin isomerization activity of MpeV in Synechococcus sp. WH8020 is prevented by the presence of a histidine at position 141 within its phycoerythrin-I β-subunit substrate. Frontiers in Microbiology 13: Article 893413.

  4. Doré H., Leconte J., Guyet U., Breton S., Farrant G.K., Demory D., Ratin m., Hoebeke M., Corre E., Pitt F.D., Ostrowski M., Scanlan D.J., Six C. & Garczarek L. (2022) Global phylogeography of marine Synechococcus in coastal areas reveals strikingly different communities than in the open ocean. Msystems 7 (6): e00656-22.

  5. Haney A.M., Sanfilippo J.E., Garczarek L., Partensky F. & Kehoe D.M. (2022) Multiple photolyases protect the marine cyanobacterium Synechococcus from ultraviolet radiation. MBio 13(4):e0151122.

  6. Ferrieux M., Dufour L., Doré H., Ratin M., Guéneuguès A., Chasselin L., Marie D., Rigaut-Jalabert F., Le Gall F., Sciandra T., Monier G., Hoebeke M., Corre E., Xia X., Liu H., Scanlan D.J., Partensky F. & Garczarek L. (2022) Comparative thermophysiology of marine Synechococcus CRD1 strains isolated from different thermal niches in iron-depleted areas. Frontiers in Microbiology 13:893413.

  7. Grébert T., Garczarek L., Daubin V., Humily F., Marie D., Ratin M., Devailly A., Farrant G.K., Mary I., Mella-Flores D., Tanguy G., Labadie K., Wincker P., Kehoe D.M. & Partensky F. (2022) Diversity and evolution of the phycobilisome gene region in relation to light niches in marine Synechococcus cyanobacteria. Genome Biology and Evolution 111: evac035,

  8. Kumarapperuma I., Joseph K.L., Wang C., Biju L., Tom I., Grébert T., Partensky F., Schluchter W.M. & Yang X. (2022) Structure and reaction mechanism of bilin lyase-isomerase. Structure 30: 564-574.e3.

  9. Garczarek L., Guyet U., Doré H., Farrant G.K., Hoebeke M., Brillet-Guéguen L., Bisch A., Siltanen J., Corre, Le Corguillé G., Caron C., Ratin M., Pitt F.D., Ostrowski M., Conan M., Siegel A., Labadie K., Aury J.-M., Wincker P., Scanlan D.J. & Partensky F. (2021). Cyanorak v2.1: a scalable information system dedicated to the visualization and expert curation of marine and brackish picocyanobacteria genomes. Nucleic Acids Research - Database issue 2021: gkaa958 ,

  10. Grébert T., Nguyen A.A., Pokhrel S., Joseph K.L., Chen B., Ratin M. Dufour L., Haney A.M., Trinidad J., Karty J.A., Garczarek L., Schluchter W.M., Kehoe D.M. & Partensky F. (2021) Molecular basis of an alternative dual-enzyme system for light color acclimation of marine Synechococcus cyanobacteria. Proceedings of the National Academy of Sciences of the USA. 118 (9) e2019715118. doi: 10.1073/pnas.2019715118

  11. Holtrop T., Huisman J., Stomp M., Biersteker L., Aerts J., Grébert T., Partensky F., Garczarek L & van der Woerd H.J. (2021) Vibrational modes of water predict spectral niches for photosynthesis in lakes and oceans. Nature Ecology and Evolution.5: 55-66.
  12.  Carrigee L.A., Frick J.P., Karty J.A., Garczarek L., Partensky F. & Schluchter W.M. (2021) MpeV is the lyase isomerase for the doubly-linked phycourobilin on the β-subunit of phycoerythrin I & II in marine Synechococcus. Journal of Biological Chemistry 296: 100031. doi: 10.1074/jbc.RA120.015289
  13. Doré H., Farrant G.K., Guyet U., Haguait J., Humily F., Ratin M., Pitt F.D., Ostrowski M., Six C., Brillet-Guéguen L., Hoebeke M., Bisch A., Le Corguillé G., Erwan C., Labadie K., Aury J.-M., Wincker P., Choi D.H., Noh J.H., Scanlan D.J. Partensky F., & Garczarek L. (2020) Evolutionary mechanisms of long-term genome diversification associated with niche partitioning in marine picocyanobacteria. Frontiers in Microbiology. 11: 567431. doi: 10.3389/fmicb.2020.567431
  14. Guyet U., Nguyen N.A., Doré H., Haguait J., Pittera J., Conan M., Ratin M., Corre E., Le Corguillé G., Brillet-Guéguen L., Hoebeke M., Six C., Steglich C., Siegel A., Eveillard D., Partensky F. & Garczarek L. (2020) Synergic effects of temperature and irradiance on the physiology of the marine Synechococcus strain WH7803. Frontiers in Microbiology 11: 1707. doi: 10.3389/fmicb.2020.01707
  15. Breton S., Jouhet J., Guyet U., Gros V., Pittera J., Demory D., Partensky F., Doré H., Ratin M., Maréchal E., Nguyen N.A., Garczarek L. & Six C. (2020). Unveiling membrane thermoregulation strategies in marine Synechococcus temperature ecotypes. New Phytologist. 225 (6): 2396-2410. https://doi: 10.1111/nph.16239
  16. Sanfilippo JE, Garczarek L, Partensky F & Kehoe DM. (2019). Chromatic acclimation in cyanobacteria: A diverse and widespread process for optimizing photosynthesis. Annual Review of Microbiology 73:407-433
  17. Sanfilippo JE, Nguyen AA, Garczarek L, Karty JA, Strnat JA, Partensky F, Schluchter WM & Kehoe DM (2019). Interplay between differentially expressed enzymes contributes to light color acclimation in marine Synechococcus. Proceedings of the National Academy of Sciences of the USA. 116 (13) 6457-6462
  18. Partensky F., Mella-Flores D., Six C., Garczarek L., Czjzek M., Marie D., Kotabova E., Prasil O, (2018). Oxygen production rates of marine picocyanobacteria with different configurations of the oxygen evolution complex. Photosynthesis Research. DOI: 10.1007/s11120-018-0539-3
  19. Partensky F., Six C., Ratin M., Garczarek L., Vaulot D., Probert I., Calteau A., Gourvil P., Marie D., Grébert T., Bouchier, Le Panse S., Gachenot M.., Rodríguez F. & Garrido J.L. (2018). A novel species of the marine cyanobacterium Acaryochloris with a unique pigment content and lifestyle. Scientific Reports. 8; 9152. DOI: 10.1038/s41598-018-27542-7
  20. Grébert T., Doré H., Partensky F., Farrant G.K., Boss E., Picheral M., Guidi L., Pesant S., Scanlan D.J., Wincker P., Acinas S.G., Kehoe D.M. & Garczarek L. (2018). Light color acclimation: a key process in the global ocean distribution of Synechococcus cyanobacteria. Proceedings of the National Academy of Sciences of the USA 115(9): E2010-E2019
  21. Pittera J., Jouhet J., Breton S., Garczarek L., Partensky F., Maréchal E., Nguyen N.A., Doré H., Ratin M., Pitt F.D., Scanlan D.J. & Six C (2018). Thermoacclimation and genome adaptation of the membrane lipidome in marine Synechococcus. Environmental Microbiology. doi: 10.1111/1462-2920.13985.