Some Cyanobacteria can grow photohererotrophically with some simple organic compounds such glucose or acetate. I don't know which species though.

This is an extract from the section about physiology of Cyanobacteria in the Brock:

"Most species tested are obligate phototrophs, being unable to grow in the dark on organic compounds. However, some cyanobacteria can assimilate simple organic compounds such as glucose and acetate if light is present (photoheterotrophy). A few cyanobacteria, mainly filamentous species, can grow in the dark on glucose or sucrose, using the sugar as both carbon and energy source"

Thanks Xabier, I didnt know this ability of Cyanobacteria. Jackilin, non-slufur purple and green bacteria are photoheterotrophs but they have not PS-II

Hi Daniel,

I don't think this sounds energetically possible. Since water is fully oxidised it would need to be able to donate an electron that it doesn't have so that it could become further oxidised. This may be possible from a chemistry point of view but would require a huge amount of energy and end up with a very receive molecule.

hope this helps

cheers,

Richard

Dear Campos.

The Photoheterotrophs can use organic matters as C and electron source. They can use light as energy source. They can not use water as electron donor. However various member of the Cyanophyceae and Chlorophyceae familia can utilize water as electron source, they can not use organic matter  as electron donor generally. Photolitotrophic ototrophs can use water as electron donor under photosynthetic conditions. Their C source is CO2, and energy source is light. However, I always prudent when I talk about photosynthetic organisms. If you find any photoheterotrophs which can utilize water as electron donor, please report me.

Sorry, I accidentally sent a message to Mr.Campos. Now I'm sending the message to Mr. Puyol:

Dear Puyol.

The Photoheterotrophs can use organic matters as C and electron source. They can use light as energy source. They can not use water as electron donor. However various member of the Cyanophyceae and Chlorophyceae familia can utilize water as electron source, they can not use organic matter  as electron donor generally. Photolitotrophic ototrophs can use water as electron donor under photosynthetic conditions. Their C source is CO2, and energy source is light. However, I always prudent when I talk about photosynthetic organisms. If you find any photoheterotrophs which can utilize water as electron donor, please report me.

The linked publication shows a great decrease in C-fixation in Cyanothece under photoheterotrophic conditions using glycerol while maintaining photosynthesis indicators (oxygen evolution).

Article Mixotrophic and photoheterotrophic metabolism in Cyanothece ...