PMID: 15224740Jul 1, 2004Paper

Adaptation of soil biological nitrification to heavy metals

Environmental Science & Technology
James A RuskMike J McLaughlin

Abstract

The adaptive response of soil biological nitrification to Zn and Pb was assessed using an in situ method we have developed. The method is based on reinoculating a sterilized metal contaminated soil with the same soil that is either uncontaminated or has been incubated with metal. This approach excludes the potentially confounding effects of metal aging reactions in soils. We found added Zn concentrations which gave rise to a decrease in nitrification to 50% that of the uncontaminated soil (i.e. EC50) of 210 mg/kg for communities not previously exposed to Zn and 850 mg/kg for communities exposed to Zn for 17 months, indicating that significant adaptation of the community to Zn had occurred. Similarly, this protocol was able to demonstrate adaptation of soil biological nitrification to Pb, with EC50 values of 1960 and 3150 mg/kg for the unexposed and exposed treatments, respectively. Exposure of unadapted and adapted microbial communities to a combination of Zn and Cd showed that the presence of Cd did not lead to greater toxicity in either community. Adapted communities were not more sensitive to decreases in soil pH than unadapted communities. Prior exposure to Zn was found to confer significantly greater tolerance of the commu...Continue Reading

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Citations

Sep 23, 2009·Ecotoxicology·Nicholas J BouskillTimothy E Ford
Apr 24, 2009·The ISME Journal·Jelle MertensErik Smolders
Jun 9, 2016·Journal of Environmental Sciences (China)·Ji LiHuiting Xie
Nov 9, 2012·The Science of the Total Environment·Marco ContinMaria De Nobili
Feb 14, 2009·The Science of the Total Environment·Diane A HeemsbergenNancy Penney
Oct 27, 2015·Environmental Science & Technology·Vikram KapoorJorge W Santo Domingo
Jul 6, 2012·Risk Analysis : an Official Publication of the Society for Risk Analysis·Jaana SorvariJari Haimi
Aug 4, 2015·Environmental Science and Pollution Research International·Annette BérardYvan Capowiez
May 10, 2012·FEMS Microbiology Reviews·Bryan S Griffiths, Laurent Philippot
Jul 1, 2015·Environmental Science and Pollution Research International·Aiju LiuXiao Liu
Jul 28, 2009·Environmental Pollution·Erica DonnerStephen Nortcliff
Jan 28, 2017·Marine Pollution Bulletin·Yan HuangGuangcheng Chen
Aug 13, 2008·Environmental Toxicology and Chemistry·Bojeong KimAnthony G Hay
Dec 28, 2016·Environmental Science and Pollution Research International·Salla Selonen, Heikki Setälä
Oct 31, 2020·Environmental Science and Pollution Research International·Xijuan LiuAiju Liu

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