Organelle Identification and Characterization in Plant Cells: Using a Combinational Approach of Confocal Immunofluorescence and Electron Microscope |
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Authors: | Yu Chung Tse Sheung Kwan Lam Liwen Jiang |
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Institution: | (1) Department of Biology and Molecular Biotechnology Program, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China;(2) Centre for Cell and Developmental Biology, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China;(3) Present address: Department of Molecular Genetics and Cell Biology, The University of Chicago, Chicago, IL, USA;(4) Present address: Department of Molecular and Cell Biology and Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, CA 94720, USA; |
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Abstract: | The plant secretory and endocytic pathways consist of several functionally distinct membrane-bounded compartments. The ultra
structures of the endoplasmic reticulum, the Golgi apparatus, and central vacuoles have been well characterized via traditional
structural electron microscope (EM). However, the identification of plant prevacuolar compartments (PVCs) and early endosomes
(EEs) had not been achieved until more recently because of the lack of specific markers for these organelles. Recent development
of fluorescent reporters for PVCs and EEs expressing in transgenic tobacco BY-2 cells and Arabidopsis plants has allowed their dynamic characterization in living cells via confocal microscopy and drug treatment, which led to
their subsequent morphological identification via structural and immunogold EM. Thus, in this review, we will use our studies
on PVCs and EEs as examples to present an efficient approach for organelle identification in plant cells via primary characterization
of fluorescent-marked organelles in living cells and their dynamic response to drug treatments, which then serves as the basis
for subsequent immunogold and structural EM studies for organelle identification. Such strategy thus represents a powerful
approach in future research for the identification of novel organelles and transport vesicles in plant cells. |
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