Chemical studies on plant leaf movement controlled by a biological clock
M. Ueda, T. Sugimoto, Y. Sawai, T. Ohnuki, and S. Yamamura
Laboratory of Natural Products, Department of Chemistry,
Faculty of Science and Technology, Keio University, Hiyoshi, Yokohama
Abstract: Most leguminous plants close their leaves
in the evening, as if to sleep, and open them early in the morning according
to the circadian rhythm controlled by a biological clock. Extensive
studies on nyctinastic plants led to the isolation of a variety of leaf-closing
and -opening substances. And we found that the biological clock regulates
the balance of concentration between leaf-opening and -closing substances
in the plant body during the day.
*Pure Appl.Chem. 75,
141419 (2003). An issue of reviews and research papers based on
lectures presented at the 23rd IUPAC International Symposium on the
Chemistry of Natural Products, Florence, Italy, 28 July 2 August 2002.
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