A Unique Microbial Photosynthesis (IMAGE) Washington State University Caption Conceptual model of a new type of anaerobic photosynthesis of G. sulfurreducens and P. aestuarii via direct, inter-species electron transfer. Credit Washington State University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.