Stem Sensitivity and Ethylene Involvement in Phototropism of Mung Bean
- 1 February 1976
- journal article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 57 (2), 286-289
- https://doi.org/10.1104/pp.57.2.286
Abstract
A system is described for the examination of phototropism in the epicotyl of a dicot seedling, mung bean (Phaseolus aureus Roxb.), under conditions approximating nature, including the use of intact, nonetiolated plants exposed to elevated, continuous, white, unilateral light. It is found that in this system perception of the phototropic stimulus by the leaves alone cannot account for the curvature, and that exposure of the stem is also necessary. The phototropic response was found to be strongly altered in nonintact plants. Hypobaric treatment indicates that ethylene may participate in phototropism, possibly by acting as an inhibitor of auxin transport.Keywords
This publication has 8 references indexed in Scilit:
- Dose-Response Curves for Radish Seedling PhototropismPlant Physiology, 1974
- Red Light Enhancement of the Phototropic Response of Etiolated Pea StemsPlant Physiology, 1974
- Light-induced Ethylene Production in SorghumPlant Physiology, 1973
- Ethylene in Plant GrowthProceedings of the National Academy of Sciences, 1973
- Auxin Transport in Zea mays Coleoptiles II. Influence of Light on the Transport of Indoleacetic Acid-2-14CPlant Physiology, 1967
- Role of Leaves in PhototropismPlant Physiology, 1966
- Effects of Ethylene on Auxin TransportPlant Physiology, 1966
- Regulation of Ethylene Evolution and Leaf Abscission by AuxinPlant Physiology, 1964