Cadmium uptake in Anacystis nidulans: Effect of modifying factors.
- 1 January 1985
- journal article
- research article
- Published by Microbiology Research Foundation in The Journal of General and Applied Microbiology
- Vol. 31 (1) , 39-48
- https://doi.org/10.2323/jgam.31.39
Abstract
Cd2+ uptake rates in the cyanobacterium A. nidulans IU 625 (ATCC 27144) were found to be concentration-dependent. While Ca2+ and Zn2+ showed competitive inhibition, Hg2+ enhanced Cd2+ uptake. The pH values optimal for growth of the organism (pH 8.5) resulted in more Cd2+ uptake than low (pH 6.5) or high pH (10.0) conditions. Dithiol (dithiothreitol) proved more effective in lessening Cd2+ uptake than monothiol (mercaptoethanol). The test organism suspended in spent medium showed negligible Cd2+ uptake. Among the synthetic complexans, EDTA inhibited metal uptake, while citrate favored the process. There was more Cd2+ uptake by dense cultures, but the specific rate expressed per unit protein was less.This publication has 3 references indexed in Scilit:
- Uptake and accumulation of copper, nickel, and iron by Typha latifolia grown in solution cultureCanadian Journal of Botany, 1983
- Cadmium toxicity in a cyanobacterium: Effect on modifying factorsEnvironmental and Experimental Botany, 1981
- Release of weak and strong copper‐complexing agents by algae1Limnology and Oceanography, 1979