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Colorless Sulfur Bacteria

Colorless Sulfur Bacteria. José Rojas Echenique. Colorless: Non-phototrophic Sulfur: Sulfur oxidizing. Colorless Sulfur?. O 2. H 2 S. Mats. Thiovulum veil. Thanks Olivia!. Thiovulum at the gradient. Thanks Isabella!. Excellent swimmers. Schulz and Jørgensen , 2001.

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Colorless Sulfur Bacteria

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  1. Colorless Sulfur Bacteria José Rojas Echenique

  2. Colorless: • Non-phototrophic • Sulfur: • Sulfur oxidizing Colorless Sulfur?

  3. O2 H2S Mats

  4. Thiovulum veil Thanks Olivia!

  5. Thiovulum at the gradient Thanks Isabella!

  6. Excellent swimmers Schulz and Jørgensen, 2001

  7. Thiovulum slime thread Thanks Isabella!

  8. Straddling the gradients • Excellent swimming: stay at the optimal spot • Slime threads: the veil makes a better interface Business Plan

  9. Beggiatoa Thanks Olivia!!

  10. Beggiatoa Mubmann et al. 2007

  11. Being in two places at the same time, and at two times in the same place • Long filaments: sulfur and electron donor in different places • Vacuole store: sulfur and electron donor at different times • Gliding: two places at two times also works, they reach through the boundary layer Business Plan

  12. NO3- O2 S2O32- S2O32- Enrichments

  13. O2 Gradient tubes H2S

  14. Gradient tubes 2So + 3O2 + 2H2O 2SO42- + 4H+

  15. From Aaron’s gradient tube

  16. Gradient tubes

  17. NO3- S2O32- Anaerobic Thiosulfate Plates

  18. S2O32- + 2H2O SO42- + H2S Anaerobic Thiosulfate Plates Thiosulfate “Fermentation” (Desulfovibriosulfodismutans, Desulfuocapsathiozymogenes)

  19. Anaerobic Thiosulfate Plates Thanks Katrin!

  20. O2 S2O32- Aerobic Thiosulfate Plates

  21. S2O32- + 2O2 + H2O SO42- + H2SO4 4S2O32- + O2 + 2H2O 2SO42- + 4OH- 2S2O32- + 7O2 + 6H2O 2SO42- + 6H2SO4 Aerobic Thiosulfate Plates

  22. Aerobic Thiosulfate Plates Thanks Veronica!

  23. Colorless Sulfur Bacteria

  24. Sulfur Cycle

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