Organic acid metabolism in nectarine fruit development under protected cultivation Behavior Study of NAD-Malic Enzyme in Facultative CAM Plants Photosynthetic Features of Transgenic Rice Expressing Sorghum C4 Type NADP-ME THE ACTIVITY CHANGES OF NADP-MALIC ENZYME AND ITS REGULATION IN THE TRANSFORMATION C_3 TYPE PHOTOSYNTHESIS INTO CAM TYPE Photosynthetic Characteristics of Transgenic Wheat Expressing Maize C4-Type NADP-ME Gene Cloning of NAD-Malic Enzymes and Their Expression Analysis During Tissues and Fruit Development of Apple Cloning of NAD-Malic Enzymes and Their Expression Analysis During Tissues and Fruit Development of Apple The effect and the mechanism of drought, salt and temperature on NADP-malic enzymes in plants