Sulfur cycle

Aerobic oxidation of sulfide and sulfur

H2S and S0 with oxygen as the terminal acceptor, used as E and electron source

sulfulobus

oxidizes S0 to sulfuric acid

desulfuration

decomposition of organics to H2S

sulfur respiration

S0 as TeA via anaerobic respiration

dissimilatory sulfate reduction

reduces SO4 as TeA via anaerobic respirations to H2S

assimilatory sulfate reduction

assimilates SO3 to S0, tightly regulated and end product inhibited

Dissimilatory SO4 reduction

for anaerobic respiration, no end product limit because is for E production makes H2S and H2 as electron source

desulfovibrio

sulfate reducing bacteria

deposition of S0

S0 deposits in lakes, used for dissimilatory sulfate reduction or ozidize H2S to S0 to make deposits

desulfovibrio, thiobacillus, and chlorbium

sulfate reducing bacteria making H2S

thiobacillus

Aerobically converts H2S into S0

Phototrophs

anaerobically convert H2S to S0

anaerobic oxidation of sulfide and sulfur

oxidation with an acceptor that isn’t oxygen makes S0 or SO4

thiomargarita/beggiatoa

use H2S for electrons and NO3 as terminal electron acceptor