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- Title
THE SECRETORY CYCLE OF <em>DIONAEA MUSCIPULA</em> ELLIS HI. THE MECHANISM OF RELEASE OF DIGESTIVE SECRETION.
- Authors
Robins, R. J.; Juniper, B. E.
- Abstract
Autoradiography has been used to track the path of secretion in the digestive glands of <em>Dionaea muscipula</em>. Neither the dictyosomes nor dictyosomal vesicles appear to be involved, but radios label is lost rapidly from the endoplasmic reticulum and small osmiophilic vacuoles directly into the cell wall. Radiolabel is subsequently lost from the large osmiophilic vacuoles and accumulates in the small vacuoles. The effects of colchicine and cytochalasin B are complex. Both decrease the enzymatic activity of the secretion, but not the protein content, suggesting effects on the synthesis and discharge of secretion, not directed against microtubules or microfilaments. It is proposed that the discharge of secretion occurs by direct fusion of ER to the plasmalemma or via vesicles and vacuoles derived from the ER.
- Subjects
PLANT secretion; PLANT microtubules; PLANT enzymes; PLANT plasma membranes; BIOLOGICAL transport; PLANT physiology; VENUS'S flytrap; AUTORADIOGRAPHY
- Publication
New Phytologist, 1980, Vol 86, Issue 3, p313
- ISSN
0028-646X
- Publication type
Article
- DOI
10.1111/j.1469-8137.1980.tb00791.x