Plant Physiol.
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Plant Physiology 53:76-79 (1974)
© 1974 American Society of Plant Biologists

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Articles

Rapid Phytochrome-mediated Changes in Adenosine 5'-Triphosphate Content of Etiolated Bean Buds 1

Judith M. White2 and Carl S. Pike3

a Department of Biology, Franklin and Marshall College, Lancaster, Pennsylvania 17604

This study was designed to determine the effects of red and far red irradiation on ATP metabolism in etiolated bean buds (Phaseolus vulgaris L. var. Red Kidney). Compared to dark controls, red irradiated buds show an initial decline in ATP content at 15 seconds following a 5-minute irradiation. ATP content then rapidly rises to a peak at 1 minute, and then slowly returns to the baseline. The 1-minute promotion of ATP content is red/far red reversible. Acetylcholine does not appear to mimic red light in this system; it causes a marked decrease in ATP content.

2 Present address: Committee on Biophysics, Harvard University, Cambridge, Mass. 02138.

3 To whom correspondence should be addressed.

1 This work was supported by National Science Foundation Grant GY-10168 and research funds of the Department of Biology.






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ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 1974 by the American Society of Plant Biologists