This study reports the toxicity of nickel to Anacystis nidulans and Spirulina platensis grown in artificial culture medium and also the accumulation of this metal by these cyanobacteria. The two species were treated with different concentrations of Ni as NiSO4 5H2O. Growth rate, carbon assimilation (C14) and chlorophyll‐A content were the parameters measured for toxicity. Both species showed significant reduction in growth rates with increasing concentrations of the metal. In the case of A. nidulans 0.1 ppm Ni resulted in a significant reduction, while at this concentration S. platensis had a hormetic effect. Chlorophyll‐A content of and carbon assimilation by these cyanobacteria were negatively correlated with Ni concentration. However, the rate of decrease varied with the species. Carbon assimilation was inhibited more than chlorophyll‐A content, as indicated by assimilation efficiency, i.e., the ratio between carbon assimilation and chlorophyll‐A content. In the case of metal accumulation the concentration factor was negatively correlated with metal concentration in the medium.
Nickel uptake and toxicity in cyanobacteria
Reprints and Corporate Permissions
Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?
To request a reprint or corporate permissions for this article, please click on the relevant link below:
Academic Permissions
Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?
Obtain permissions instantly via Rightslink by clicking on the button below:
If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.
Related Research Data
Related research
People also read lists articles that other readers of this article have read.
Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.
Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.