Intracellular fibers in oat coleoptile cells and their possible significance in cytoplasmic streaming.

Abstract

The epidermis and parenchyma cells of the oat coleoptile contain very long, fine fibers, 0.1 to 0.2 [mu] wide, which, when fixed in glutaraldehyde, are seen to be constructed of microfilaments 50 to 70 A wide. Their orientation is parallel to the long axis of the cell, and longitudinal also in transvacuolar strands of cytoplasm. Evidence that the fibers are associated with cytoplasmic streaming is discussed.