Sulfur production by obligately chemolithoautotrophic thiobacillus species.

Applied and Environmental Microbiology
J M VisserJ G Kuenen

Abstract

Transient-state experiments with the obligately autotrophic Thiobacillus sp. strain W5 revealed that sulfide oxidation proceeds in two physiological phases, (i) the sulfate-producing phase and (ii) the sulfur- and sulfate-producing phase, after which sulfide toxicity occurs. Specific sulfur-producing characteristics were independent of the growth rate. Sulfur formation was shown to occur when the maximum oxidative capacity of the culture was approached. In order to be able to oxidize increasing amounts of sulfide, the organism has to convert part of the sulfide to sulfur (HS(sup-)(symbl)S(sup0) + H(sup+) + 2e(sup-)) instead of sulfate (HS(sup-) + 4H(inf2)O(symbl)SO(inf4)(sup2-) + 9 H(sup+) + 8e(sup-)), thereby keeping the electron flux constant. Measurements of the in vivo degree of reduction of the cytochrome pool as a function of increasing sulfide supply suggested a redox-related down-regulation of the sulfur oxidation rate. Comparison of the sulfur-producing properties of Thiobacillus sp. strain W5 and Thiobacillus neapolitanus showed that the former has twice the maximum specific sulfide-oxidizing capacity of the latter (3.6 versus 1.9 (mu)mol/mg of protein/min). Their maximum specific oxygen uptake rates were very similar...Continue Reading

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Citations

Mar 20, 2004·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Kwang-Seup KimYoung-Sook Oh
Jun 29, 2016·Environmental Technology·José Tavares de SousaWilton Silva Lopes
Apr 1, 1999·Biotechnology and Bioengineering·A J JanssenG Lettinga
Jan 12, 2007·Biotechnology and Bioengineering·Pim L F van den BoschAlbert J H Janssen
Jul 22, 2005·Letters in Applied Microbiology·A González-SánchezS Revah
Dec 24, 2019·Environmental Microbiology·J Gijs Kuenen
Dec 17, 2008·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Chanya PokasoowanAjit P Annachhatre
Jan 7, 2014·Applied and Environmental Microbiology·Honglei LiuLuying Xun
Dec 30, 2017·Environmental Technology·Jinlan XuTinglin Huang
Jun 19, 2019·Applied Microbiology and Biotechnology·Yan-Xiang CuiDi Wu
May 5, 2005·Applied and Environmental Microbiology·Satoshi OkabeHisashi Satoh
Dec 15, 2015·Environmental Technology·Pawel RomanAlbert J H Janssen
Feb 24, 2015·Biotechnology Advances·Dana Pokorna, Jana Zabranska
Feb 26, 2009·Environmental Science & Technology·Pim L F van den BoschAlbert J H Janssen
Mar 19, 2019·Environmental Science & Technology·Rieks de RinkCees J N Buisman

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