Plant Physiol. Bio-Rad Microplate Reader
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Plant Physiology 62:105-106 (1978)
© 1978 American Society of Plant Biologists

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Phytochrome-induced Increase of Fluorescein Translocation in Mung Bean Hypocotyls

Takuma Tanada

Light and Plant Growth Laboratory, Plant Physiology Institute, Federal Research, SEA, United States Department of Agriculture Beltsville, Maryland 20705

Moderate doses of red (660 nanometer) irradiation cause a rapid increase in the translocation of fluorescein in dark-grown mung bean hypocotyl (Vigna radiata L.) segments. The increase fails to appear following large doses of red (660 nanometers) irradiation. The red induced increase is prevented by a subsequent far red (730 nanometer) irradiation. Reversibility suggests the participation of phytochrome in the process. The increase in translocation is attributed to the generation of a positive electrostatic charge in the plasma membrane by some action of phytochrome on membrane molecules.






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ASPB Publications PLANT PHYSIOLOGY THE PLANT CELL
Copyright © 1978 by the American Society of Plant Biologists