Leaf-closing substance in leucaena leucocephala

Yoshihiro Sohtome, Takashi Tokunaga, Katsuhiro Ueda, Shosuke Yamamura, Minoru Ueda

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)51-56
Number of pages6
JournalBioscience, Biotechnology and Biochemistry
Issue number1
Publication statusPublished - 2002


  • Leaf-closing substance
  • Leucaena leucocephala
  • Nyctinasty
  • Potassium (2R,3R)-2,3,4-trihydroxy-2-methylbutanoate


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