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Published on: March 4, 2021
Light-induced Ethylene Production in Sorghum
L E Craker1, F B Abeles, W Shropshire
1Suburban Experiment Station, University of Massachusetts, Waltham, Massachusetts 02154.
Plant Physiology
|June 1, 1973
Summary
Light exposure triggers ethylene production in Sorghum vulgare seedlings. This response, likely mediated by phytochrome, is a high irradiance response, suggesting a role for light in plant development.
Area of Science:
- Plant Physiology
- Photobiology
- Biochemistry
Background:
- Ethylene is a plant hormone regulating various growth and developmental processes.
- Light is a critical environmental factor influencing plant physiology.
- Phytochrome is a key photoreceptor involved in light perception in plants.
Purpose of the Study:
- To investigate the effect of light on ethylene production in Sorghum vulgare seedlings.
- To determine the effective light spectrum for inducing ethylene production.
- To elucidate the photoreceptor involved in light-induced ethylene production.
Main Methods:
- Sections of dark-grown Sorghum vulgare seedlings were treated with light.
- Specific regions of the light spectrum (blue and far-red) were used for treatment.
- Ethylene production was measured in response to light treatment.
Main Results:
- Light treatment, particularly in the blue and far-red regions, induced ethylene production.
- The action spectrum for light-induced ethylene production aligned with high irradiance responses.
- Phytochrome was identified as the likely initial photoreceptor.
Conclusions:
- Light-induced ethylene production in Sorghum vulgare is a high irradiance response.
- Phytochrome plays a crucial role in mediating this light response.
- This finding contributes to understanding light signaling pathways in plants.
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