FORMATION OF CAROTENOIDS AND CHLOROPHYLLS IN ETIOLATED BARLEY SEEDLINGS EXPOSED TO RED LIGHT
- 1 April 1938
- journal article
- research article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 13 (2) , 413-418
- https://doi.org/10.1104/pp.13.2.413
Abstract
Etiolated barley seedlings contain small quantities of carotenes relative to the xanthophylls. Exposure of these plants to red light causes a large, rapid increase in carotenes and chlorophylls and a small increase in xanthophylls. This effect is not obtained by impregnation of etiolated leaves with sucrose. Spectral absorption curves of [beta]-carotene and lutein acetate that are recorded indicate that the principal constituents of barley leaf carotenoids, [beta]-carotene and lutein, absorb considerable light in the red region of the spectrum. Reasons for the formation of carotene in etiolated barley seedlings exposed to red light remain to be established.This publication has 1 reference indexed in Scilit:
- Leaf XanthophyllsScience, 1936