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Science 4 February 1983:
Vol. 219. no. 4584, pp. 505 - 507
DOI: 10.1126/science.219.4584.505
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Articles

Leaf Dimorphism in Aquatic Angiosperms: Significance of Turgor Pressure and Cell Expansion

PAULA A. DESCHAMP 1 and TODD J. COOKE 1

1 Department of Botany University of Maryland, College Park 20742

Depending on environmental conditions, the aquatic angiosperm Callitriche heterophylia can develop two different leaf types with distinctive morphological characteristics. Cellular turgor pressure seems to act as the biophysical mechanism responsible for the selection of leaf form in control conditions designed to mimic the natural habitat of this plant. The experimental induction of leaf form involves the ability of various treatments to mediate cell expansion through their effects on turgor pressure or wall extensibility.

Submitted on August 31, 1982
Revised on October 27, 1982


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Abscisic acid regulation of heterophylly in Marsilea quadrifolia L.: effects of R-(-) and S-(+) isomers.
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