Synthesis of gibberellin GA6 and its role in flowering of Lolium temulentum.
Phytochemistry
; 62(1): 77-82, 2003 Jan.
Article
em En
| MEDLINE
| ID: mdl-12475622
ABSTRACT
The induction of flowering by one long day (LD) in the grass Lolium temulentum is most closely mimicked by application of the gibberellins (GAs) GA(5) or GA(6), both of which occur naturally. These gibberellins promote floral development but have little effect on stem elongation. Endogenous GA(5) and GA(6) contents in the shoot apex double on the day after the LD and, for GA(5) (and we presume for GA(6) as well) reach a concentration known to be inductive for the excised shoot apex in vitro. They are, therefore, strong candidates as LD floral stimuli in this grass. The synthesis of GA(6) and an examination of its florigenic properties in L. temulentum are described.
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Base de dados:
MEDLINE
Assunto principal:
Lolium
/
Flores
/
Giberelinas
Idioma:
En
Ano de publicação:
2003
Tipo de documento:
Article
País de afiliação:
Austrália