RRC ID 31302
Author Mikulic P, Beardall J.
Title Contrasting ecotoxicity effects of zinc on growth and photosynthesis in a neutrophilic alga (Chlamydomonas reinhardtii) and an extremophilic alga (Cyanidium caldarium).
Journal Chemosphere
Abstract This study aimed to determine the contrasting ecotoxicity effects of zinc on growth and photosynthesis in a neutrophilic (Chlamydomonas reinhardtii) and an extremophilic (Cyanidium caldarium) alga. Experiments were carried out to see if cells acclimated to zinc would respond differently to cells that were unexposed to zinc. The study also aimed to see if extremophiles displayed different acclimation properties to neutrophiles. Results showed that the neutrophilic alga C. reinhardtii, was more susceptible to free zinc and had a lower IC50 value than the extremophile, however its stress response protected the photosynthetic apparatus. Upon acclimation, the photosynthetic abilities of C. reinhardtii were not significantly compromised when exposed to toxic levels of free zinc. On the other hand, C. caldarium had a stress response which allowed it to tolerate significantly higher amounts of free zinc in its environment compared to C. reinhardtii , however the stress response did not protect the photosynthetic apparatus, and upon acclimation C. caldarium was no better equipped to protect its photosynthetic integrity than unexposed cells.
Volume 112
Pages 402-11
Published 2014-10-1
DOI 10.1016/j.chemosphere.2014.04.049
PII S0045-6535(14)00537-2
PMID 25048933
MeSH Acclimatization / drug effects Chlamydomonas reinhardtii / drug effects* Chlamydomonas reinhardtii / growth & development Chlamydomonas reinhardtii / metabolism Chlamydomonas reinhardtii / physiology Dose-Response Relationship, Drug Ecotoxicology* Environmental Pollutants / toxicity* Hydrogen-Ion Concentration Photosynthesis / drug effects* Rhodophyta / drug effects* Rhodophyta / growth & development Rhodophyta / metabolism Rhodophyta / physiology Zinc / toxicity*
IF 5.778
Times Cited 7
Algae NIES-2137