Abstract
Portulaca oleracea is one of the uncommon cases in which a plant is able to cycle between two CO2 concentrating mechanisms (i.e., C4 and CAM), thereby contradicting the theory that C4 and CAM are incompatible and highlighting how our knowledge about these photosynthetic adaptations is still limited. Whether plant hormones play a significant role in regulating C4 and CAM when these syndrom…