Summary
The deposition of cell walls inMarchantia fiber cells was investigated with the electron microscope using cytochemical and autoradiographic methods. Fiber cells were formed in the meristematic regions of developing gemmalings. Numerous active Golgi bodies were present in rapidly growing fibers; the Golgi vesicles contained fibrous material closely resembling that in the cell wall. Vesicles (probably derived from Golgi) and the cell wall stained strongly after peroxidation with silver hexamine indicating the presence of polysaccharides. When young thalli were fed tritiated glucose, most of the radioactivity in fiber cells was associated with Golgi bodies. If this incubation in labelled glucose was followed by a cold chase the label was localized primarily over the cell wall. These results indicate that Golgi are involved in deposition of fiber cell walls inMarchantia.
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Fowke, L.C., Pickett-Heaps, J.D. A cytochemical and autoradiographic investigation of cell wall deposition in fiber cells ofMarchantia berteroana . Protoplasma 74, 19–32 (1972). https://doi.org/10.1007/BF01279198
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DOI: https://doi.org/10.1007/BF01279198