PHOTOSYNTHETIC BIOLOGY OF NATIVE AND CULTIVATED FRAGARIA
Fragaria chiloensis is a progenitor of the cultivated strawberry and has a high photosynthetic capacity. The physiological basis for this observation may be related to a number of factors including leaf anatomy and carboxylation potential. Mesophyll surface area and Rubisco levels likely play a role. Another factor may be enhanced light harvesting capacity and energy transfer through PSI and PSII. Strong activity at Cb630, Cb649, Ca684 and Ca703 in association with higher rates of A suggest that photosynthetic potential can be limited by the ATP and NADP supply which drive carboxylation. Biotic and abiotic stresses impact physiology and productivity at this level. While levels of control and genetic regulation of these processes are still open to speculation, a clearer picture is emerging by which plant carbon dynamics may be better regulated and enhanced.