Degradation of Chlorophyll (IMAGE) Hokkaido University Caption Degradation of chlorophyll starts when Mg is extracted from the molecule by Mg-dechelatase. Resulting pheophytin a also plays a role in photosynthesis. Credit Shimoda Y et al., <i>Plant Cell</i>, Sept. 7, 2016 Usage Restrictions This image is copyrighted and can be used for reporting scientific works described in this press release with appropriate credit(s). 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.