%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Ben Ouada, S.
%A Ben Ali, R.
%A Leboulanger, Christophe
%A Zaghden, H.
%A Choura, S.
%A Ben Ouada, H.
%A Sayadi, S.
%T Effect and removal of bisphenol A by two extremophilic microalgal strains (Chlorophyta)
%D 2018
%L fdi:010073142
%G ENG
%J Journal of Applied Phycology
%@ 0921-8971
%K Microalgae ; Extremophiles ; Chlorophyta ; Bisphenol a ; Toxicity ; Biodegradation
%K TUNISIE
%M ISI:000433966200029
%N 3
%P 1765-1776
%R 10.1007/s10811-017-1386-x
%U https://www.documentation.ird.fr/hor/fdi:010073142
%> https://www.documentation.ird.fr/intranet/publi/2018/07/010073142.pdf
%V 30
%W Horizon (IRD)
%X The effects and the removal efficiency of bisphenol A (BPA) on two extremophilic Chlorophyta strains, an alkaliphilic Picocystis and a thermophilic Graesiella, were assessed. BPA was shown to inhibit the growth and photosynthesis of both species, but to a greater extent for Graesiella. The growth IC50 (4 days) was 32 mg L-1 for Graesiella and higher than 75 mg L-1 for Picocystis. Oxidative stress was induced in both strains when exposed to increasing BPA concentrations, as evidenced by increased malondialdehyde content. BPA exposure also resulted in an over-expression of antioxidant activities (ascorbate peroxidase, glutathione S-transferase and catalase) in Picocystis whereas they were repressed in Graesiella. Both species exhibited high BPA removal efficiency, reaching 72% for Picocystis and 52.6% for Graesiella at 25 mg L-1. BPA removal was mostly attributed to biodegradation for both species. Overall, according to its extended tolerance and its removal capacity, Picocystis appeared to be a promising species for the BPA bioremediation even at high contamination levels.
%$ 038 ; 034 ; 084 ; 020