Chemical basis of plant leaf movement

Minoru Ueda, Yoko Nakamura

Research output: Contribution to journalShort surveypeer-review

40 Citations (Scopus)

Abstract

Nyctinastic plants open and close leaves with a circadian rhythm. Here we discuss chemical aspects of the mechanism of nyctinastic leaf movement. Nyctinastic plants from five different genera are known to contain species-specific leaf-opening and leaf-closing factors. The relative concentrations of leaf-closing and leaf-opening factors of the nyctinastic plant Phyllanthus urinaria change circadianly, suggesting that nyctinastic movement is regulated by two classes of circadianly regulated factors with opposing functions. A closing and an opening factor of Albizzia, when linked to a fluorescent dye, both specifically labeled motor cells of pluvini. A membrane fraction of pluvini contains proteins of 210 and 180 kDa that bind to a leaf-opening factor of Cassia mimosoides. The molecular identification of these proteins is underway.

Original languageEnglish
Pages (from-to)900-907
Number of pages8
JournalPlant and Cell Physiology
Volume48
Issue number7
DOIs
Publication statusPublished - 2007 Jul

Keywords

  • Endogenous bioactive substance
  • Legumes
  • Motor cell
  • Nyctinasty
  • Receptor

ASJC Scopus subject areas

  • Physiology
  • Plant Science
  • Cell Biology

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