Isolation and identification of lateral bud growth inhibitor, indole-3-aldehyde, involved in apical dominance of pea seedlings.
A lateral bud growth inhibitor was isolated from etiolated pea seedlings and identified as indole-3-aldehyde. The indole-3-aldehyde content was significantly higher in the diffusates from explants with apical bud and indole-3-acetic acid treated decapitated explants, in which apical dominance is maintained, than in those from decapitated ones releasing apical dominance. When the indole-3-aldehyde was applied to the cut surface of etiolated decapitated plants or directly to the lateral buds, it inhibited outgrowth of the latter. These results suggest that indole-3-aldehyde plays an important role as a lateral bud growth inhibitor in apical dominance of pea seedlings.
Nakajima
Eri
E
University of Tsukuba, Doctoral Program in Agricultural Sciences, Tsukuba, Ibaraki, 305-8572, Japan. eri@bsys.tsukuba.ac.jp
Nakano
Hiroshi
H
Yamada
Kosumi
K
Shigemori
Hideyuki
H
Hasegawa
Koji
K
D007210:Indoleacetic Acids / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D018519:Meristem / Q000187:drug effects / Q000235:genetics / Q000254:growth & development*; D019906:Nuclear Magnetic Resonance, Biomolecular; D018532:Pisum sativum / Q000187:drug effects / Q000235:genetics / Q000254:growth & development*; D010937:Plant Growth Regulators / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D012639:Seeds / Q000187:drug effects / Q000235:genetics / Q000254:growth & development*
D007210:Indoleacetic Acids; D010937:Plant Growth Regulators; C030737:indoleacetic acid