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Syntheses and novel bioactivities of artificial leaf-opening substances of Lespedeza cuneata G. Don, designed for the bioorganic studies of nyctinasty

✍ Scribed by Minoru Ueda; Yoshiyuki Sawai; Shosuke Yamamura

Publisher
Elsevier Science
Year
1999
Tongue
French
Weight
703 KB
Volume
55
Category
Article
ISSN
0040-4020

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✦ Synopsis

Abstraet Potassiut~ lespedezate (1) is the leaf-opening substance of a nyetinastic plant, Lespedeza cuneata G. Don. We have synthesized two sugar-derivatives of 1, potassium galactolespedezate (4) and mannolespedezate (6). Both 4 and 6 were quite effective for the leaf-opening of Cass/a. raimosoides at 8 Γ— 10 "/M, as slzong as 1. However, 1 kept the leaf open only for a few days; on the other hand, 4 and 6 kept the leaf open after a week at that concentration. Additionally, remarkable difference was observed in the rate of enzymatic hydrolysis of natural and artificial leaf-opening sustance by using commercially available 13-glacosidase Therefore, 4 and 6 would not be hydrolized in the plant body, and are potentially useful molecular probes for the studies of the control of the nyctinastic leaf-movement by a biological clock.

πŸ“œ SIMILAR VOLUMES

Sugar-derivatives of potassium lespedeza
Sugar-derivatives of potassium lespedezate, artificial leaf-opening substances of Lespedeza cuneata G. Don, designed for the bioorganic studies of nyctinasty
✍ Minoru Ueda; Yoshiyuki Sawai; Shosuke Yamamura πŸ“‚ Article πŸ“… 1999 πŸ› Elsevier Science 🌐 French βš– 201 KB

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

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In a previous paper, the syntheses of potassium galactolespedezate (1) and potassium galactoisolespedezate (2), artificial leaf-opening substances useful for bioorganic studies of nyctinasty were reported. The fluorescent probe compounds, fluorescence-labeled galactoisolespedezates (3, 10, 13), desi

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