Abstract
FM (Fei-Mao) styryl dyes are commonly used for the fluorescence imaging of plasma membrane (PM) and endocytosis in vivo. Thanks to their amphiphilic character, these dyes are incorporated in the outer leaflet of the PM lipid bilayer and emit fluorescence in its hydrophobic environment. The endocytic pathway of FM dye uptake starts with rapid PM staining and continues in PM invaginations and membrane vesicles during endocytosis, followed by staining of trans-Golgi network (TGN) and ending in tonoplast (vacuolar membrane). FM dyes do not stain endoplasmic reticulum and nuclear membrane. The time-lapse fluorescence microscopy could track endocytic vesicles and characterize the rate of endocytosis in vivo. On the other hand, fixable FM dyes (FX) can be used for the visualization of particular steps in the FM dye uptake in situ. Staining with FM dyes and subsequent microscopic observations could be performed on both tissue and cellular level. Here, we describe simple procedures for the effective FM dye staining and destaining in root tip of Arabidopsis thaliana seedlings and suspension-cultured tobacco cells.
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Acknowledgments
We acknowledge the Imaging Facility of the Institute of Experimental Botany CAS supported by the MEYS CR LM2015062 Czech-BioImaging and CZ.02.1.01/0.0/0.0/16_013/0001775 and Operational Programme Prague Competitiveness (OPPC) CZ.2.16/3.1.00/21519.
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Jelínková, A., Malínská, K., Petrášek, J. (2019). Using FM Dyes to Study Endomembranes and Their Dynamics in Plants and Cell Suspensions. In: Cvrčková, F., Žárský, V. (eds) Plant Cell Morphogenesis. Methods in Molecular Biology, vol 1992. Humana, New York, NY. https://doi.org/10.1007/978-1-4939-9469-4_11
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DOI: https://doi.org/10.1007/978-1-4939-9469-4_11
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