Plant Physiol. Journal of Pharmacology and Experimental Therapeutics
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Plant Physiology 50:510-517 (1972)
© 1972 American Society of Plant Biologists

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Articles

Ethylene-induced Pea Internode Swelling

Its Relation to Ribonucleic Acid Metabolism, Wall Protein Synthesis, and Cell Wall Structure 1

W. R. Eisinger2 and S. P. Burg

a Department of Biology, University of Miami, and Fairchild Tropical Gardens, Coral Gables, Florida 33156

Exposure of etiolated pea (Pisum sativum L. var. Alaska) subapical sections to ethylene disrupts normal polar cell expansion, but fresh weight increase is little affected and the tissue expands radially, swelling. Ethylene has no effect on gross ribonucleic acid metabolism before or during the period when swelling occurs, but incorporation of 14C-proline and leucine into wall-associated protein is markedly inhibited after an initial 3-hour lag period which precedes swelling. Ethylene affects the composition of this protein, altering the proline-hydroxyproline ratio. The gas also alters the optical birefringence pattern of the cell wall, indicating that the cellulose microfibrillar orientation has been changed.

2 Present address: Department of Biological Sciences, Stanford University, Stanford, Calif. 94305.

1 This investigation was supported in part by a National Science Foundation Grant GB-27424 to S. P. Burg, and W. R. Eisinger was supported in part by a predoctoral trainee grant from the National Institutes of Health to the Department of Cellular and Molecular Biology, University of Miami.




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H. Kazama, H. Dan, H. Imaseki, and G. O. Wasteneys
Transient Exposure to Ethylene Stimulates Cell Division and Alters the Fate and Polarity of Hypocotyl Epidermal Cells
Plant Physiology, April 1, 2004; 134(4): 1614 - 1623.
[Abstract] [Full Text] [PDF]


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