Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
Bioorganic Studies on Nyctinasty of the Plant Controlled by a Biological Clock
Minoru UedaNoboru TakadaShosuke Yamamura
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2002 Volume 75 Issue 11 Pages 2337-2347

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Abstract

Most leguminous plants close their leaves in the evening, as if to sleep, and open them early in the morning. This circadian rhythm is known to be controlled by the biological clock of such plants. Extensive studies on other nyctinastic plants led to the isolation of a variety of leaf-closing and leaf-opening substances. And we found that the circadian rhythmic leaf-movement of these plants is controlled by a biological clock that regulates the balance of concentration between leaf-opening and -closing substances.

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© 2002 The Chemical Society of Japan
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