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Colorless Sulfur Bacteria José Rojas Echenique. Colorless Sulfur? Colorless: Non-phototrophic...
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Colorless Sulfur Bacteria José Rojas Echenique. Colorless Sulfur? Colorless: Non-phototrophic Sulfur: Sulfur oxidizing
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Slide 1
Colorless Sulfur Bacteria Jos Rojas Echenique
Slide 2
Colorless Sulfur? Colorless: Non-phototrophic Sulfur: Sulfur
oxidizing
Slide 3
Mats O2O2 H2SH2S
Slide 4
Thiovulum veil Thanks Olivia!
Slide 5
Thiovulum at the gradient Thanks Isabella!
Slide 6
Excellent swimmers Schulz and Jrgensen, 2001
Slide 7
Thiovulum slime thread Thanks Isabella!
Slide 8
Business Plan Straddling the gradients Excellent swimming: stay
at the optimal spot Slime threads: the veil makes a better
interface
Slide 9
Beggiatoa Thanks Olivia!!
Slide 10
Beggiatoa Mubmann et al. 2007
Slide 11
Business Plan 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
Slide 12
Enrichments S 2 O 3 2- NO 3 - S 2 O 3 2- O2O2
Slide 13
Gradient tubes O2O2 H2SH2S
Slide 14
2S o + 3O 2 + 2H 2 O2SO 4 2- + 4H + Gradient tubes
Slide 15
From Aarons gradient tube
Slide 16
Gradient tubes
Slide 17
Anaerobic Thiosulfate Plates S 2 O 3 2- NO 3 -
Slide 18
Anaerobic Thiosulfate Plates S 2 O 3 2- + 2H 2 OSO 4 2- + H 2 S
Thiosulfate Fermentation ( Desulfovibrio sulfodismutans, Desulfu
ocapsa thiozymogenes )
Slide 19
Anaerobic Thiosulfate Plates Thanks Katrin!
Slide 20
Aerobic Thiosulfate Plates S 2 O 3 2- O2O2
Slide 21
Aerobic Thiosulfate Plates S 2 O 3 2- + 2O 2 + H 2 OSO 4 2- + H
2 SO 4 4S 2 O 3 2- + O 2 + 2H 2 O2SO 4 2- + 4OH - 2S 2 O 3 2- + 7O
2 + 6H 2 O2SO 4 2- + 6H 2 SO 4
Slide 22
Aerobic Thiosulfate Plates Thanks Veronica!
Slide 23
Colorless Sulfur Bacteria
Slide 24
Sulfur Cycle
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