Synthesis of gibberellin GA6 and its role in flowering of Lolium temulentum

Rod W. King; Lloyd T. Evans; Lewis N. Mander; Thomas Moritz; Richard P. Pharis; Bruce Twitchin

doi:10.1016/S0031-9422(02)00447-8

Synthesis of gibberellin GA₆ and its role in flowering of Lolium temulentum

Rod W. King, Lloyd T. Evans, Lewis N. Mander^*, Thomas Moritz, Richard P. Pharis, Bruce Twitchin

^*Corresponding author for this work

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44 Citations (Scopus)

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) GA₅ or GA₆, both of which occur naturally. These gibberellins promote floral development but have little effect on stem elongation. Endogenous GA₅ and GA₆ contents in the shoot apex double on the day after the LD and, for GA₅ (and we presume for GA₆ 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 GA₆ and an examination of its florigenic properties in L. temulentum are described.

Original language	English
Pages (from-to)	77-82
Number of pages	6
Journal	Phytochemistry
Volume	62
Issue number	1
DOIs	https://doi.org/10.1016/S0031-9422(02)00447-8
Publication status	Published - Jan 2003

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10.1016/S0031-9422(02)00447-8

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title = "Synthesis of gibberellin GA6 and its role in flowering of Lolium temulentum",

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) GA5 or GA6, both of which occur naturally. These gibberellins promote floral development but have little effect on stem elongation. Endogenous GA5 and GA6 contents in the shoot apex double on the day after the LD and, for GA5 (and we presume for GA6 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 GA6 and an examination of its florigenic properties in L. temulentum are described.",

keywords = "Darnel, Flowering, Gibberellin A, Gramineae, Lolium temulentum, Shoot apex, Stem elongation",

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T1 - Synthesis of gibberellin GA6 and its role in flowering of Lolium temulentum

AU - King, Rod W.

AU - Evans, Lloyd T.

AU - Mander, Lewis N.

AU - Moritz, Thomas

AU - Pharis, Richard P.

AU - Twitchin, Bruce

PY - 2003/1

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N2 - The induction of flowering by one long day (LD) in the grass Lolium temulentum is most closely mimicked by application of the gibberellins (GAs) GA5 or GA6, both of which occur naturally. These gibberellins promote floral development but have little effect on stem elongation. Endogenous GA5 and GA6 contents in the shoot apex double on the day after the LD and, for GA5 (and we presume for GA6 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 GA6 and an examination of its florigenic properties in L. temulentum are described.

AB - The induction of flowering by one long day (LD) in the grass Lolium temulentum is most closely mimicked by application of the gibberellins (GAs) GA5 or GA6, both of which occur naturally. These gibberellins promote floral development but have little effect on stem elongation. Endogenous GA5 and GA6 contents in the shoot apex double on the day after the LD and, for GA5 (and we presume for GA6 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 GA6 and an examination of its florigenic properties in L. temulentum are described.

KW - Darnel

KW - Flowering

KW - Gibberellin A

KW - Gramineae

KW - Lolium temulentum

KW - Shoot apex

KW - Stem elongation

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U2 - 10.1016/S0031-9422(02)00447-8

DO - 10.1016/S0031-9422(02)00447-8

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SN - 0031-9422

VL - 62

SP - 77

EP - 82

JO - Phytochemistry

JF - Phytochemistry

IS - 1

ER -

Synthesis of gibberellin GA₆ and its role in flowering of Lolium temulentum

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