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Frédéric Partensky

Frédéric PARTENSKY

Senior scientist (CNRS Research director)
Marine microbiologist
Unité(s) de recherche
Unité Adaptation et Diversité en Milieu Marin
Equipe(s)
Team ECOMAP - Ecology of Marine Plankton

I am a senior scientist specialized in the ecology, evolution and comparative physiology of marine picocyanobacteria Prochlorococcus, Synechococcus and Cyanobium, a monophyletic group collectively known as alpha-cyanobacteria. I am particularly interested in studying their light-harvesting complexes, and elucidating the molecular bases of their vast pigment diversity, with a special focus on chromatic acclimaters that can modify their pigment content to match the ambient light color. 

My current activity also includes the comprehensive analysis of metabolic pathways of alpha-cyanobacteria, which relies on the expert curation of numerous representative genomes using Cyanorak, an information system based on clusters of orthologous genes. 

Publications

Phytoplankton With Flexible Pigment Content Disadvantaged by Projected Future Decrease in Variability of the Ocean Light Spectrum

Francesco Mattei, Anna E Hickman, Julia Uitz, Vincenzo Vellucci, Laurence Garczarek, et al.. Phytoplankton With Flexible Pigment Content Disadvantaged by Projected Future Decrease in Variability of the Ocean Light Spectrum. Global Change Biology, 2026, 32 (1), pp.e70671. ⟨10.1111/gcb.70671⟩. ⟨hal-05451893⟩

Assessing phytoplankton community composition using in-situ multispectral excitation fluorescence and potential for application to BGC-Argo profiling floats

Flavien Petit, Julia Uitz, Louison Dufour, Collin Roesler, Frédéric Partensky, et al.. Assessing phytoplankton community composition using in-situ multispectral excitation fluorescence and potential for application to BGC-Argo profiling floats. EGUsphere [preprint], 2026, ⟨10.5194/egusphere-2025-6418⟩. ⟨hal-05616950⟩

Chromatic acclimation shapes phytoplankton biogeography

Francesco Mattei, Anna Hickman, Julia Uitz, Louison Dufour, Vincenzo Vellucci, et al.. Chromatic acclimation shapes phytoplankton biogeography. Science Advances , 2025, 11 (8), ⟨10.1126/sciadv.adr9609⟩. ⟨hal-04962714⟩

Competition for light color between marine <i>Synechococcus</i> strains with fixed and variable pigmentation

Louison Dufour, Laurence Garczarek, Francesco Mattei, Bastian Gouriou, Julia Clairet, et al.. Competition for light color between marine Synechococcus strains with fixed and variable pigmentation. Applied and Environmental Microbiology, 2025, 91 (8), pp.e00087-25. ⟨10.1128/aem.00087-25⟩. ⟨hal-05218257⟩

Differential acclimation kinetics of the two forms of type IV chromatic acclimaters occurring in marine Synechococcus cyanobacteria

Louison Dufour, Laurence Garczarek, Bastian Gouriou, Julia Clairet, Morgane Ratin, et al.. Differential acclimation kinetics of the two forms of type IV chromatic acclimaters occurring in marine Synechococcus cyanobacteria. Frontiers in Microbiology, 2024, 15, pp.1349322. ⟨10.3389/fmicb.2024.1349322⟩. ⟨hal-04467770v2⟩

Light color regulation of photosynthetic antennae biogenesis in marine phytoplankton

David M. Kehoe, Avijit Biswas, Bo Chen, Louison Dufour, Théophile Grébert, et al.. Light color regulation of photosynthetic antennae biogenesis in marine phytoplankton. Plant and Cell Physiology, 2024, ⟨10.1093/pcp/pcae115⟩. ⟨hal-04725332⟩

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