Shuttle-like movements of Golgi vesicles in the tip of growingChara rhizoids |
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| Authors: | E. Bartnik Z. Hejnowicz A. Sievers |
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| Affiliation: | (1) Botanisches Institut, Universität Bonn, Venusbergweg 22, D-W-5300 Bonn 1, Federal Republic of Germany;(2) Present address: Department of Molecular Biology and Department of Genetics, Harvard Medical School, Massachusetts General Hospital, Boston, Massachusetts, USA |
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| Abstract: | Summary In tip-growingChara rhizoids, the in-vivo saltatory movements of Golgi vesicles were recorded. The movements in radial direction back and forth between the ER aggregate and the plasma membrane occurred three times more often than movements passing the ER aggregate tangentially. The mean velocity of the class of Golgi vesicles observed (0.4–1  m in diameter) was approx. 0.3 m/s. Higher speed of 1–1.5 m/s occurred only in radial directions. Possibly, the ER aggregate is involved in guidance of the Golgi vesicles.Abbreviations DIC differential interference contrast - ER endoplasmic reticulum - OsFeCN osmium tetroxide-potassium ferricyanideDedicated to the memory of Professor O. Kiermayer |
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| Keywords: | Chara ER aggregate Golgi vesicle (movement) |
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