PMID: 10698768Mar 4, 2000

Selective inhibition of the oxidation of ferrous iron or sulfur in Thiobacillus ferrooxidans

Applied and Environmental Microbiology
L HarahucI Suzuki


The oxidation of either ferrous iron or sulfur by Thiobacillus ferrooxidans was selectively inhibited or controlled by various anions, inhibitors, and osmotic pressure. Iron oxidation was more sensitive than sulfur oxidation to inhibition by chloride, phosphate, and nitrate at low concentrations (below 0.1 M) and also to inhibition by azide and cyanide. Sulfur oxidation was more sensitive than iron oxidation to the inhibitory effect of high osmotic pressure. These differences were evident not only between iron oxidation by iron-grown cells and sulfur oxidation by sulfur-grown cells but also between the iron and sulfur oxidation activities of the same iron-grown cells. Growth experiments with ferrous iron or sulfur as an oxidizable substrate confirmed the higher sensitivity of iron oxidation to inhibition by phosphate, chloride, azide, and cyanide. Sulfur oxidation was actually stimulated by 50 mM phosphate or chloride. Leaching of Fe and Zn from pyrite (FeS(2)) and sphalerite (ZnS) by T. ferrooxidans was differentially affected by phosphate and chloride, which inhibited the solubilization of Fe without significantly affecting the solubilization of Zn.


Jul 16, 2013·Journal of Mathematical Biology·Miguel A Dumett, James P Keener
Sep 29, 2001·Journal of Microbiological Methods·C A du PlessisS H de Kock
Oct 11, 2003·Biotechnology Advances·I Suzuki
Aug 15, 2001·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·A MalikP K Roychoudhury
May 16, 2006·Canadian Journal of Microbiology·Yongqiang Chen, Isamu Suzuki
Nov 28, 2012·Journal of Hazardous Materials·Hongmei WangXiang Fu
Mar 4, 2010·Biotechnology and Bioengineering·Chandra Sekhar GahanAke Sandström
May 24, 2016·Research in Microbiology·Helen R WatlingElizabeth L J Watkin
Jan 24, 2017·Frontiers in Microbiology·Mark DopsonElizabeth L J Watkin
May 26, 2020·World Journal of Microbiology & Biotechnology·Paola Gissel Duarte BriceñoMarco Antonio Márquez Godoy


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Related Concepts

Chloride Ion Level
Zinc sulfide
Phosphate Measurement
Potassium Cyanide (K(C(15)N))
Sulfur Oxidation

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