Course theme

Type of course

Banner
Banner

pH Down, Adaptability Up: The Versatile Physiology of Acidophilic Sulfate-Reducing Bacteria

  • 23 April, 2024
  • 16:00
  • Wageningen University, Microbiology
  • prof.dr. D.Z. Machado De Sousa
  • dr. I. Sanchez Andreadr. C.U. Welte

Acid mine drainages (AMD) are streams characterized by their low pH, and high concentrations of sulfate and heavy metals. These characteristics make AMD highly toxic, and if improperly handled AMD can have a detrimental environmental impact on water quality and biodiversity. Acidophilic sulfate-reducing bacteria (aSRB), can attenuate AMD through reducing sulfate to sulfide (biosulfidogenesis). To date, only a few aSRB are known and many questions remain on their stress physiology, metabolic versatility and ecology. Hence, aSRB hold much scientific potential for further exploration. With Acididesulfobacillus acetoxydans as model organism we explored: the response to acetic acid stress, the response to proton stress, and identified a novel mechanism for dissimilatory reduction of nitrate to ammonium. Findings contribute to understanding aSRB microbial physiology and contribute to understanding their ecological role and potential for biosulfidogenic biotechnology. Overall, this thesis explored the fascinating and versatile physiology of aSRB.

Shape
Researcher

Reinier Egas

readmore
shape Banner
We provide a disciplinary and multidisciplinary research programme aimed at advanced understanding of environmental problems and advanced training of PhD candidates in this field.
More information
shape Banner
Here you will find a selection of international events related to the socio-economic and natural sciences of the environment.
View our events