Article (Scientific journals)
Gibberellins and the floral transition in Sinapis alba
Corbesier, Laurent; Kustermans, Gaëlle; Périlleux, Claire et al.
2004In Physiologia Plantarum, 122 (1), p. 152-158
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Keywords :
gibberellins; sinapis alba; flowering
Abstract :
[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.
Research center :
Département des Sciences de la Vie, Physiologie végétale
Disciplines :
Phytobiology (plant sciences, forestry, mycology...)
Author, co-author :
Corbesier, Laurent;  Université de Liège, Département des sciences de la vie > Physiologie végétale
Kustermans, Gaëlle ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Anatomie et cytologie pathologiques
Périlleux, Claire ;  Université de Liège - ULiège > Département des sciences de la vie > Physiologie végétale
Melzer, C.
Morritz, T.
Havelange, Andrée ;  Université de Liège - ULiège
Bernier, Georges
Language :
English
Title :
Gibberellins and the floral transition in Sinapis alba
Publication date :
2004
Journal title :
Physiologia Plantarum
ISSN :
0031-9317
eISSN :
1399-3054
Publisher :
Blackwell Munksgaard, Copenhagen, Denmark
Volume :
122
Issue :
1
Pages :
152-158
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 24 March 2009

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