Sorry for my english. I need help with definition of photoheterotrophic bacteria. I know that photoheterotrophic bacteria are heliobacteria, green non sulfur bacteria e purple non sulfur bacteria. Photoauthotrophic bacteria use light as energy source anc CO2 as carbon source (CO2 is fixed by Calvin cycle or by reverse TCA or by idrossipropionate pathway). Photoheterotrophic bacteria use light as energy source and organic compounds as carbon source. How they use organic compound as carbon source? they use glucose by EMP pathway, Krebs cycle ecc. or they use organic compounds for gluconeogenesis?
Can anyone help me?