223930-86-7Relevant articles and documents
The biological significance of leaf-movement, an approach using a synthetic inhibitor of leaf-closure
Ueda, Minoru,Sugimoto, Takanori,Sawai, Yoshiyuki,Yamamura, Shosuke
, p. 7545 - 7548 (2007/10/03)
Nyctinastic leaf-movement, which is folding and opening movement of the leaves according to circadian rhythm, have been widely observed in leguminous plants. Although this movement has been known since the age of Alexander the Great, the question 'Why doe
Sugar-derivatives of potassium lespedezate, artificial leaf-opening substances of Lespedeza cuneata G. Don, designed for the bioorganic studies of nyctinasty
Ueda, Minoru,Sawai, Yoshiyuki,Yamamura, Shosuke
, p. 3757 - 3760 (2007/10/03)
Potassium lespedezate (1) is the leaf-opening substance of a nyctinastic plant, Lespedeza cuneata G. Don. We synthesized two sugar-derivatives of 1, potassium galactolespedezate (2) and mannoisolespedezate (3). Both 2 and 3 were quite effective for the leaf-opening of L. cuneata, at 8 x 10-7 M, as strong as 1. However, 1 kept the leaf open only for a few days; on the other band, 2 and 3 kept the leaf open after a week at that concentration. Thus, it is assumed that 2 and 3 could not be hydrolyzed by α-glucosidase in the plant body, and are therefore potentially useful molecular probes for the studies of the control of the nyctinastic leaf-movement by a biological clock.