Sulfur bacteria

Electron flow in green sulfur bacteria

anaerobic, non cyclic electron flow using ferrodoxin reductant and reduces NAD+ when needed otherwise using cyclic electron flow

electron flow in purple non sulfur bacteria anaerobic

phototrophic growth, non cyclic with reverse electron flow to make NADH, cyclic for ATP and reverse

Electron flow purple non sulfur aerobic

chemotrophically where NADH and some ATP from catabolism and o2 and PMF make ATP

PSB pigment

bacteriochlorophyll a or b and PSI

PSB electron donor

H2S, S0 (or H2/organics)

PNSB pigments

bacteriochlorophyll a or b, PSI

PNSB electron source

H2 or organic compounds

GSB pigment

bacteriachlorophyll C, d or e, PSI

GSB electron donor

H2S or S0

GNSB pigment

bacteriochlorophyll c or d, chlorophyll a, PSI

GNSB electron donors

sulfides