CYTOCHEMICAL STUDY OF ELECTRON MICROSCOPY ON FRUCTOSE 1,6-DIPHOSPHATASE AND URIDINE DIPHOSPHOGLUCOSE PYROPHOS PHORYLASE IN THE MESO PHYLL CELLS OF Stevia rebaudiana BERTONI

作     者：李里(火昆),汪德耀 

作者机构：Laboratory of Cell Biology Xiamen University Laboratory of Cell Biology Xiamen University 

出 版 物：《Science China Chemistry》 (中国科学:化学(英文版))

年 卷 期：1988年第31卷第2期

页      面：171-178页

核心收录：

主　　题：UDPG CYTOCHEMICAL STUDY OF ELECTRON MICROSCOPY ON FRUCTOSE 1,6-DIPHOSPHATASE AND URIDINE DIPHOSPHOGLUCOSE PYROPHOS PHORYLASE IN THE MESO PHYLL CELLS OF Stevia rebaudiana BERTONI 

摘      要：The subcellular localizations of fructose 1,6-diphosphatase (FDPase, EC 3.***.3.11) and uridine diphos-phoglucose pyrophosphorylase (UDPG PPlase, UTP:α-D-glucose-I-phosphate uridylytransferase, EC 2.***.7.9) in the mesophyll cells of a new sweetener plant (Stevia rebaudiana Bertoni), both of which arecritical in carbohydrate metabolism, were determined and the activities of both enzymes in the leaves ofdifferent ages were compared in this study. This experiment reveals: FDPase is a membrane-bound enzymeand is specifically localized on the thylakoid membranes of chloroplasts and the plasmic *** is only found on the thylakoid membranes of chloroplasts in the young mesophyll cells, while it isfound on both the thylakoid membranes of chloroplasts and the plasmic membranes in the mature meso-phyll cells. UDPG PPlase is distributed in the cytoplasmic matrix freely, and is localized on Golgi flat-tened sacs and Colgi vesicles in a membrane-bound form. In this study, it is suggested that the chloropla