Characterization of a uranium-tolerant green microalga with high potential for the remediation of metal-polluted waters - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2023

Characterization of a uranium-tolerant green microalga with high potential for the remediation of metal-polluted waters

Camille Beaulier
  • Fonction : Auteur
  • PersonId : 1279502
Marie Dannay
  • Fonction : Auteur
  • PersonId : 1279503
Fabienne Devime
  • Fonction : Auteur
  • PersonId : 1205541
Claude Alban
Jacques Bourguignon
Stéphane Ravanel

Résumé

Uranium (U) pollution of terrestrial and aquatic ecosystems poses a significant threat to the environment and human health because this radionuclide is chemotoxic. Characterization of organisms that tolerate and accumulate U is critical to decipher the mechanisms evolved to cope with the radionuclide and to propose new effective strategies for bioremediation of U-contaminated environments. We isolated a unicellular green microalga that is much more tolerant to U than Chlamydomonas reinhardtii and Chlorella vulgaris. The isolated microalga is able to accumulate U very rapidly and, then, progressively release it into the medium, behaving as an excluder to limit the toxic effects of U. The U-tolerant microalga is able to grow, maintain high photosynthesis and capture 25-55% of U from natural metal-contaminated waters from a reclaimed U mine. The isolated microalga is very promising for the remediation of polluted waters with valorization of algal biomass that accumulates neutral lipids.
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Dates et versions

hal-04193132 , version 1 (01-09-2023)

Identifiants

  • HAL Id : hal-04193132 , version 1

Citer

Camille Beaulier, Marie Dannay, Fabienne Devime, Galeone Adrien, Claude Alban, et al.. Characterization of a uranium-tolerant green microalga with high potential for the remediation of metal-polluted waters. Plant Biology Europe, Jul 2023, Marseille, France. ⟨hal-04193132⟩
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