Related Experiment Video
Updated: Aug 8, 2026

Non-invasive Assay for Chlorophyll Biosynthesis Kinetics Determination during Early Stages of Arabidopsis De-etiolation
Published on: January 12, 2024
Stimulation by Ethylene of Chlorophyll Biosynthesis in Dark-grown Cucumber Cotyledons
R G Alscher1, P A Castelfranco
1Department of Botany, University of California, Davis, California 95616.
Abstract:
Five-day-old etiolated cucumber (Cucumis sativus L. var. Alpha Green) cotyledons produced more chlorophyll over a 4-hour illumination period after a prolonged exposure (12 to 72 hours) in the dark to ethylene concentrations ranging from 0.1 to 10 mul/l. Intact seedlings and excised cotyledons responded in the same way to this treatment. This effect does not involve a shortening of the lag phase of chlorophyll accumulation. Exposure of cotyledons to ethylene during the illumination period did not produce the same stimulatory effect on chlorophyll synthesis and, under certain conditions, chlorophyll synthesis was slightly inhibited by exposure to ethylene in the light.
More Related Videos
Related Concept Videos
Cell Signaling in Plants
C4 Pathway and CAM
C4 Pathway
The C4 pathway is used by plants such as...
Cycloaddition Reactions: MO Requirements for Photochemical Activation
Photoreceptors and Plant Responses to Light
Plant Hormones
Regulation of Transpiration by Stomata

