Reversibility of the Red - Far-red Reaction by Irradiation at Different Sites

SINCE the discovery that red light promotes and far-red light inhibits the germination of lettuce seeds 1,2 this reversible photoreaction has been studied in detail 3,4 and has been found to be identical with that involved in controlling flowering and other biological processes. Because of the wides...

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Bibliographic Details
Published in:Nature (London) 1958-01, Vol.181 (4603), p.200-201
Main Authors: KLEIN, SHIMON, PREISS, JOHN W
Format: Article
Language:English
Subjects:
Humanities and Social Sciences
letter
multidisciplinary
Science
Science (multidisciplinary)
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Summary:SINCE the discovery that red light promotes and far-red light inhibits the germination of lettuce seeds 1,2 this reversible photoreaction has been studied in detail 3,4 and has been found to be identical with that involved in controlling flowering and other biological processes. Because of the widespread occurrence and importance of this reaction, a detailed understanding of its mechanism is of the utmost importance, and attempts to explain it have been made by a number of workers. Most recently, the available knowledge has been summed up by Hendricks in a formula of general terms 5 . The form in which this process is usually stated makes it appear that the same pigment molecules which, for example, have been brought to the far-red absorbing form by red radiation are directly reversed to their former state by the absorption of far-red light.
ISSN:0028-0836
1476-4687
DOI:10.1038/181200a0