Leaf-closing Substance in Leucaena leucocephala

Yoshihiro SOHTOME; Takashi TOKUNAGA; Katsuhiro UEDA; Shosuke YAMAMURA; Minoru UEDA

doi:10.1271/bbb.66.51

Organic Chemistry Regular Papers

Leaf-closing Substance in Leucaena leucocephala

Yoshihiro SOHTOME, Takashi TOKUNAGA, Katsuhiro UEDA, Shosuke YAMAMURA, Minoru UEDA

著者情報

キーワード: nyctinasty, Leucaena leucocephala, leaf-closing substance, potassium (2R,3R)-2,3,4-trihydroxy-2-methylbutanoate

ジャーナルフリー

2002 年 66 巻 1 号 p. 51-56

DOI https://doi.org/10.1271/bbb.66.51

詳細

抄録

Potassium (2R,3R)-2,3,4-trihydroxy-2-methylbutanoate (1) was identified as a leaf-closing substance in the nyctinastic plant, Leucaena leucocephala. Compound 1 showed strong leaf-closing activity toward L. leucocephala and was not effective against other nyctinastic plants. The potassium ion was indispensable for the bioactivity of 1. Compound 1 gradually lost its bioactivity because of the exchange of the counter cation during isolation. A leaf-opening substance was also observed in the same plant.

責任著者(Corresponding author)

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