Toxicity of zinc to fungi, bacteria, and coliphages: influence of chloride ions - PubMed (original) (raw)

Toxicity of zinc to fungi, bacteria, and coliphages: influence of chloride ions

H Babich et al. Appl Environ Microbiol. 1978 Dec.

Abstract

A 10 mM concentration of Zn2+ decreased the survival of Escherichia coli; enhanced the survival of Bacillus cereus; did not significantly affect the survival of Pseudomonas aeruginosa, Norcardia corallina, and T1, T7, P1, and phi80 coliphages; completely inhibited mycelial growth of Rhizoctonia solani; and reduced mycelial growth of Fusarium solani, Cunninghamella echinulata, Aspergillus niger, and Trichoderma viride. The toxicity of zinc to the fungi, bacteria, and coliphages was unaffected, lessened, or increased by the addition of high concentrations of NaCl. The increased toxicity of zinc in the presence of high concentrations of NaCl was not a result of a synergistic interaction between Zn2+ and elevated osmotic pressures but of the formation of complex anionic ZnCl species that exerted greater toxicities than did cationic Zn2+. Conversely, the decrease in zinc toxicity with increasing concentrations of NaCl probably reflected the decrease in the levels of Zn2+ due to the formation of Zn-Cl species, which was less inhibitory to these microbes than was Zn2+. A. niger tolerated higher concentrations of zinc in the presence of NaCl at 37 than at 25 degrees C.

PubMed Disclaimer

Similar articles

Cited by

References

    1. Can J Microbiol. 1975 Nov;21(11):1855-65 - PubMed
    1. Experientia. 1976 Mar 15;32(3):312-4 - PubMed
    1. Appl Environ Microbiol. 1977 May;33(5):1059-66 - PubMed
    1. Environ Res. 1978 Jun;15(3):405-17 - PubMed
    1. Adv Appl Microbiol. 1978;23:55-117 - PubMed

MeSH terms

Substances

LinkOut - more resources