Reference : Gibberellins and the floral transition in Sinapis alba
Scientific journals : Article
Life sciences : Phytobiology (plant sciences, forestry, mycology...)
Gibberellins and the floral transition in Sinapis alba
Corbesier, Laurent [Université de Liège, Département des sciences de la vie>Physiologie végétale]
Kustermans, Gaëlle mailto [Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Anatomie et cytologie pathologiques >]
Périlleux, Claire mailto [Université de Liège - ULiège > Département des sciences de la vie > Physiologie végétale >]
Melzer, C. [> >]
Morritz, T. [> >]
Havelange, Andrée mailto [Université de Liège - ULiège > > >]
Bernier, Georges mailto [> >]
Physiologia Plantarum
Blackwell Munksgaard
Yes (verified by ORBi)
[en] gibberellins ; sinapis alba ; flowering
[en] The putative role of gibberellins in the transition to flowering was investigated in Sinapis alba, a caulescent long-day (LD) plant. It was observed that: (1) physiological doses of exogenous gibberellins (GA(1), GA(3), GA(9)) do not cause the floral shift of the meristem when applied to plants grown in short days but have some positive effect on the flowering response to a suboptimal LD; no inhibition was observed in any case; (2) GA-biosynthesis inhibitors (prohexadione-Ca and paclobutrazol) considerably inhibit stem growth but have some negative effect on flowering only when a suboptimal LD is given; and (3) the floral transition induced by one 22-h LD does not correlate with any detectable change in GA content of the apical bud, of the leaves, and of the phloem exudate reaching the apex. Taken together, these results suggest that GAs do not act as a major signal for photoperiodic flower induction in Sinapis.
Département des Sciences de la Vie, Physiologie végétale
Researchers ; Professionals ; Students

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