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J Integr Plant Biol, 1995, 37 (8): -, Research Article
Ultrastructure of Jincheng Juice Sac of Citrus sinensis
Guan Xue-lian, Zhu Cheng and Zhang Jin-ren
doi:
Abstract
Ultrastructure of Jincheng juice sac of Citrus sinensis (L.) Osb. was continuously investigated from the initial cell to the stalk-bearing sac. The initial cell and cells formed globularstructure, as well as the uper cells of the column-structure were typical meristem cells with mitochondria, plastids, rough endoplasmic reticulum, rich ribosome without Golgi body in their dense cytoplasm. These meristem cells would differentiate into parenchyma ceils pro2 viding storage function. At the beginning of differentiation of the meristem cells, the number of small vacuoles increased and some Golgi bodies appeared. Small vacuoles gradually fused into a central vacuole. During the fusion of small vacuoles, the cytoplasm became thinned, but still contained mitochondria, plastids, Golgi bodies, end0plasmic reticulum and some chromplasts with lipid drops. Almost no organelle were ever observed in the parenchyma cells of juice sac from mature fruit.
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