672341-24-1Relevant articles and documents
Leaf-opening Substance in the Nyctinastic Plant, Albizzia julibrissin Durazz
Ueda, Minoru,Sawai, Yoshiyuki,Shibazaki, Yuichiro,Tashiro, Chitose,Ohnuki, Takashi,Yamamura, Shosuke
, p. 2133 - 2137 (1998)
cis-p-Coumaroylagmatine (1) was isolated from Albizzia julibrissin Durazz, a nyctinastic plant, as a leaf-opening substance. The compound was quite effective for opening the plant leaves at 5 × 10-6 M at night, but was not effective for other nyctinastic plants. The bioactive fraction with leaf-closing activity was also separated from the plant extract. Although the leaf-opening activity of the plant extract changed between the day and night, the content of 1 was almost constant through a 24-h day. These results suggest that the change in content of an unknown leaf-closing factor induced balance between the two leaf-movement factors through a 24-h day.