In vivo phytochrome-mediated perception of reflected light signals
A L Mancinelli1, O Hobert, G Nikas
1Department of Biological Sciences, Columbia University, New York, NY 10027, USA.
Abstract:
The spectrophotometric assay of phytochrome in vivo in etiolated plant material was used to determine the effects of changes in reflected light on the state of the photoreceptor in etiolated seedlings exposed simultaneously to direct and reflected light. Changes in reflected light that were small in terms of the total (direct + reflected) radiation incident on the seedlings produced detectable changes in the state of phytochrome in vivo. The contribution of reflected light to the state of phytochrome in vertical organs was greater than expected from its low contribution to total incident light. These data from laboratory studies complement and are consistent with results of field studies on the effects of light reflected from neighboring vegetation on plant growth under natural radiation conditions.
More Related Videos
10:20Evaluation of Photosynthetic Behaviors by Simultaneous Measurements of Leaf Reflectance and Chlorophyll Fluorescence Analyses
Published on: August 9, 2019
08:21Real-time In Vivo Recording of Arabidopsis Calcium Signals During Insect Feeding Using a Fluorescent Biosensor
Published on: August 15, 2017
Related Concept Videos
Photoreceptors and Plant Responses to Light
Cell Signaling in Plants
Biological Clocks and Seasonal Responses
Photoreceptors and Visual Pathways
Channel Rhodopsins
Rhodopsins belong to the family of cell surface proteins called G-protein coupled receptors,...
