scholarly journals Growth of Acidithiobacillus Ferrooxidans ATCC 23270 in Thiosulfate Under Oxygen-Limiting Conditions Generates Extracellular Sulfur Globules by Means of a Secreted Tetrathionate Hydrolase

2011 ◽  
Vol 2 ◽  
Author(s):  
Simón Beard ◽  
Alberto Paradela ◽  
Juan P. Albar ◽  
Carlos A. Jerez
Keyword(s):  
Acidithiobacillus Ferrooxidans ◽  
Sulfur Globules

scholarly journals Hydroxyl, Fe2+, and Acidithiobacillus ferrooxidans Jointly Determined the Crystal Growth and Morphology of Schwertmannite in a Sulfate-Rich Acidic Environment

ACS Omega ◽  
2021 ◽  
Vol 6 (4) ◽  
pp. 3194-3201
Author(s):  
Kun Feng ◽  
Xiaomeng Wang ◽  
Bo Zhou ◽  
Min Xu ◽  
Jianru Liang ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Acidithiobacillus Ferrooxidans ◽  
Acidic Environment

Biofilm Formation, Communication and Interactions of Mesophilic Leaching Bacteria during Pyrite Oxidation

2013 ◽  
Vol 825 ◽  
pp. 107-110
Author(s):  
Sören Bellenberg ◽  
Robert Barthen ◽  
Mario Vera ◽  
Nicolas Guiliani ◽  
Wolfgang Sand
Keyword(s):  
Quorum Sensing ◽  
Acidithiobacillus Ferrooxidans ◽  
Biofilm Formation ◽  
Pyrite Oxidation ◽  
Cell Communication ◽  
Homoserine Lactone ◽  
Mixed Cultures ◽  
Acyl Homoserine Lactone ◽  
Leaching Bacteria ◽  
Leaching Efficiency

A functional luxIR-type Quorum Sensing (QS) system is present in Acidithiobacillus ferrooxidans. However, cell-cell communication among various acidophilic chemolithoautotrophs growing on pyrite has not been studied in detail. These aspects are the scope of this study with emphasis on the effects exerted by the N-acyl-homoserine lactone (AHL) type signaling molecules which are produced by Acidithiobacillus ferrooxidans. Their effects on attachment and leaching efficiency by other leaching bacteria, such as Acidithiobacillus ferrivorans, Acidiferrobacter spp. SPIII/3 and Leptospirillum ferrooxidans in pure and mixed cultures growing on pyrite is shown.

The rus Operon Genes Are Differentially Regulated When Acidithiobacillus ferrooxidans LR is Kept in Contact with Metal Sulfides

2008 ◽  
Vol 57 (4) ◽  
pp. 375-380 ◽  
Author(s):  
Camila Carlos ◽  
Fernanda C. Reis ◽  
Renato Vicentini ◽  
Danielle J. Madureira ◽  
Laura M. M. Ottoboni
Keyword(s):  
Acidithiobacillus Ferrooxidans ◽  
Metal Sulfides

Effects of Copper Exposure on Expression of Glutathione-Related Genes in Acidithiobacillus ferrooxidans

2011 ◽  
Vol 62 (5) ◽  
pp. 1460-1466 ◽  
Author(s):  
Jin-lan Xia ◽  
Shun Wu ◽  
Rui-yong Zhang ◽  
Cheng-gui Zhang ◽  
Huan He ◽  
...  
Keyword(s):  
Acidithiobacillus Ferrooxidans ◽  
Copper Exposure

Surface Characteristic of Pyrrhotite Bio-Oxidized by Acidithiobacillus Ferrooxidans

2011 ◽  
Vol 343-344 ◽  
pp. 920-925
Author(s):  
Jiang Lei
Keyword(s):  
Acidithiobacillus Ferrooxidans ◽  
Extracellular Polymeric Substances ◽  
Surface Characteristic

This paper deals with the surface characteristic of pyrrhotite bio-oxidized byAcidithiobacillus ferrooxidans. Large amounts of jarosite and element sulfur were determined in the bio-oxidation processe of pyrrhotite. More complicatedly, biofilm exists on the surface of pyrrhotite. This type of structured community ofA. ferrooxidanswas enclosed in the extracellular polymeric substances (EPS), and covered with the deposition generated in the bio-oxidation processe of pyrrhotite.

Electron transport pathways for the oxidation of endogenous substrate(s) in Acidithiobacillus ferrooxidans

2006 ◽  
Vol 52 (4) ◽  
pp. 317-327 ◽  
Author(s):  
Yongqiang Chen ◽  
Isamu Suzuki
Keyword(s):  
Electron Transport ◽  
Electron Acceptor ◽  
Acidithiobacillus Ferrooxidans ◽  
Complex I ◽  
Iron Chelators ◽  
Endogenous Respiration ◽  
Sugar Alcohols ◽  
Transport Pathways ◽  
Endogenous Substrate ◽  
Transport Inhibitors

Oxidation of endogenous substrate(s) of Acidithiobacillus ferrooxidans with O2 or Fe3+ as electron acceptor was studied in the presence of uncouplers and electron transport inhibitors. Endogenous substrate was oxidized with a respiratory quotient (CO2 produced/O2 consumed) of 1.0, indicating its carbohydrate nature. The oxidation was inhibited by complex I inhibitors (rotenone, amytal, and piericidin A) only partially, but piericidin A inhibited the oxidation with Fe3+ nearly completely. The oxidation was stimulated by uncouplers, and the stimulated activity was more sensitive to inhibition by complex I inhibitors. HQNO (2-heptyl-4-hydroxyquinoline N-oxide) also stimulated the oxidation, and the stimulated respiration was more sensitive to KCN inhibition than uncoupler stimulated respiration. Fructose, among 20 sugars and sugar alcohols including glucose and mannose, was oxidized with a CO2/O2 ratio of 1.0 by the organism. Iron chelators in general stimulated endogenous respiration, but some of them reduced Fe3+ chemically, introducing complications. The results are discussed in view of a branched electron transport system of the organism and its possible control.Key words: Acidithiobacillus ferrooxidans, endogenous respiration, uncouplers, electron transport.

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