Author:
Stratton G W,Huber A L,Corke C T
Abstract
Anabaena inaequalis was sensitive to mercuric ion (Hg2+) in the ppb (nanogram per milliliter) range. Growth was inhibited significantly at concentrations of metal ion as low as 2 ppb, and 100 ppb was required to inhibit photosynthesis and acetylene reduction. Low levels of Hg2+ stimulated acetylene reduction and photosynthesis. The lysis of vegetative cells was the primary action of mercuric ions, resulting in the inhibition of growth, photosynthesis, and nitrogenase activity. There was a linear relationship between numbers of cells and the amount of Hg2+ required to induce culture lysis. Calculated on the basis of equivalent cell numbers, Hg2+ was toxic to A. inaequalis at 0.006, 0.009, and 0.100 micrograms of Hg2+ per 10(5) cells for photosynthesis, growth, and acetylene reduction, respectively.
Publisher
American Society for Microbiology
Subject
Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology
Reference35 articles.
1. Barber J. W. Beauford and Y. J. Shieh. 1973. Some aspects of mercury uptake by plant algal and bacterial systems in relation to its biotransformation and volatilization p. 325-345. In M. H. Miller and T. H. Clarkson (ed.) Mercury mercurials mercaptans. Charles C Thomas Publisher Springfield Ill.
2. Action of sublethal doses of heavy metals on the growth characteristics of the diatom Skeletonema costatum;Berland B. R.;Marine Biol.,1977
3. Toxic effects of four heavy metals on the growth of unicellular marine algae;Berland B. R.;C. R. Acad. Sci. Paris Ser. D,1976
4. Influence of extracellular polysaccharides on the toxicity of copper and cadmium toward Klebsiella aerogenes;Bitton G.;Microb. Ecol.,1978
5. ATP and nitrogenase activity in nitrogen-fixing hetercystous blue-green algae;Bottomley P. J.;New Phytol.,1977
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