2009-05-012024-05-15https://scholars.lib.ntu.edu.tw/handle/123456789/662373摘要：成熟的蝴蝶蘭是一種CAM植物，但CAM蘭花在原球體時期沒有顯著的可滴定酸變化，推測其光合型態可能為C3，且假設在原球體發育成小苗的過程中，光合型態會從C3轉變成CAM。本研究以台灣蝴蝶蘭為材料，探討CAM關鍵固碳酵素PEPCase活性和PEPCase基因表達與光合作用型態轉變的關連性，並進一步選殖相關基因。<br> Abstract: Mature Phalaenopsis is a typical CAM plant; whereas, no remarkable day/night titratable acidity rhythm was detected at protocorm stage. The observation suggested that Phalaenopsis at its youth may undergo C3 photosynthesis pathway and lead to our hypothesis that there exists a photosynthetic transition, transits from C3 to CAM, at certain developing stage. Phalaenopsis aphrodite var. formosa, the most important indigenous specie in Taiwan, was used to analyze PEPCase activity and gene expression related to such photosynthesis transition.CAM植物光合作用型態轉變台灣蝴蝶蘭CAM plantphotosynthesis transitionPhalaenopsis aphrodite var. formosa