@article{fdi:010095039,
  title = {{C}ommercial {A}rthrospira platensis extract modifies the photophysiology of {C}ladocopium goreaui, coral endosymbiont microalgae},
  author = {{L}e {V}erge-{C}ampion, {T}. and {J}auffrais, {T}. and {L}efeuvre, {L}. and {H}oulbr{\`e}que, {F}anny},
  editor = {},
  language = {{ENG}},
  abstract = {{A}rthrospira platensis extract is incorporated into sunscreen formulations for its beneficial and {UV}-protective properties on cultured human cells. {H}owever, its effects have not yet been assessed on non-target organisms such as endosymbiotic microalgae in coral tissue. {T}o evaluate its effects, we investigated the photophysiology of the cultured dinoflagellate {C}ladocopium goreaui using {PAM} fluorometry ({RLC}, {OJIP}) after a 5-day exposure to different extract concentrations. {O}ur results show that, through a hormetic effect, {A}. platensis enhances the performance index ({P}i_{A}bs) at 0.018 mg {L}-1 by increasing the number of active reaction centers ({RC}/{ABS}) and improving electron transfer efficiency (phi {E}o, psi {E}o) along the electron transport chain. {C}onversely, beyond 108.8 mg {L}-1, negative impacts appear on {PSII}, increasing the apparent antenna size ({ABS}/{RC}) and impairing the oxygen-evolving complex ({K}-peak), ultimately reducing the maximum relative electron transport rate (r{ETR}m). {T}his relative toxicity, obtained only for the highest concentrations, supports its potential incorporation into cosmetic formulations. {T}his study contributes to improving the ecotoxicity assessment of cosmetic products on non-target organisms.},
  keywords = {{A}rthrospira platensis ; {C}ladocopium goreaui ; photophysiology ; dose-response relationship ; {JIP}-test ; coral ; {PACIFIQUE}},
  booktitle = {},
  journal = {{P}hycology},
  volume = {5},
  numero = {3},
  pages = {50 [16 p.]},
  year = {2025},
  DOI = {10.3390/phycology5030050},
  URL = {https://www.documentation.ird.fr/hor/fdi:010095039},
}