PMID: 142Nov 1, 1975

Effects of zinc-smelter emissions on forest soil microflora

Canadian Journal of Microbiology
M J Jordan, M P Lechevalier

Abstract

Within 2 km of a zinc (Zn) smelter in Palmerton, Pennsylvania, near the Lehigh Water Gap, up to 13.5% Zn by weight has been measured in the O2 horizon of the soil, and up to 8% Zn in the A1 horizon. The total numbers of bacteria, actinomycetes, and fungi (measured by dilution plate counts) were greatly reduced in the most severely Zn-contaminated soils compared with control soils. The reduction of microbial populations may be a partial cause of the decreased rate of litter decomposition at Lehigh Gap. Growth of most bacteria from control sites was reduced by 100 to 200 muM Zn, most actinomycetes by 100 muM Zn, and most fungi by 100 to 1000 muM Zn in thin-Pablum extract agar (TPab). All the tested actinomycetes and non-spore-forming bacteria isolated from Zn-contaminated Lehigh Gap soils were Zn-tolerant, growing normally in media containing 600-2000 muM Zn. Most fungi, regardless of source, were capable of at least 50% of normal growth at 700 muM Zn. Zinc-tolerant bacteria, actinomycetes, and fungi were readily isolated from low-Zn soils, suggesting that selection for Zn tolerance may proceed rapidly. Acidophilic Mortierella species have been selectively eliminated near the smelter, apparently because of elevated soil pH. Peryr...Continue Reading

Citations

Feb 3, 2011·Archives of Environmental Contamination and Toxicology·W N BeyerR L Chaney
Nov 6, 2004·Applied and Environmental Microbiology·Teresa E Pawlowska, Iris Charvat
May 7, 2004·Applied and Environmental Microbiology·R M C P RajapakshaE Bååth
Feb 27, 2007·Journal of Zhejiang University. Science. B·Yan-de JingXiao-e Yang
Jan 1, 1987·Environmental Pollution·H C Kasan, P Stegmann
Jan 1, 2004·FEMS Microbiology Ecology·Riina TurpeinenMax M Häggblom
May 10, 2017·Ecological Applications : a Publication of the Ecological Society of America·Lee H DietterichBrenda B Casper
May 20, 1999·Acta Microbiologica Et Immunologica Hungarica·M Basu, A K Paul
Jan 3, 2018·Journal of Environmental Quality·M Guittonny-Larchevêque, S Lortie
Jan 1, 1979·Oecologia·P J CoughtreyS W Shales

Related Concepts

Coryneform Group
Cell Density
Soil Pollution
Filamentous fungus
Hydrogen-Ion Concentration
Soil Microbiology
Trees (plant)
Zinc

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