Control of flowering

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/29 (2006.01) C07K 14/415 (2006.01) C12N 15/82 (2006.01)

Patent

CA 2353080

The invention relates to control of flowering and reproduction in plants, and in particular to agents and methods for inducing or suppressing flowering. The invention provides isolated nucleic acid molecules which are useful for inducing flowering, particularly initiating early flowering, for delaying or suppressing flowering, or for manipulating the flowering period. In a first aspect, the invention provides an isolated nucleic acid molecule comprising a MADS box, which is capable of altering the flowering time of a plant. Preferably the nucleic acid molecule of the invention comprises a nucleotide sequence corresponding to a FLOWERING LOCUS F (FLF) gene. The nucleic acid molecule may be a genomic DNA, a cDNA, or a messenger RNA. The invention is applicable to any dicotyledonous or monocotyledonous plant species, including but not limited to decorative flower, vegetable, fruit, cereal, grass, tree, and other flowering species.

L'invention concerne la régulation de la floraison et de la reproduction des plantes, et en particulier des agents et des techniques qui favorisent ou suppriment la floraison. L'invention fournit des molécules d'acide nucléique isolées permettant de favoriser la floraison, d'amorcer une floraison particulièrement précoce, de retarder ou de modifier la période de floraison. Selon un premier aspect, l'invention fournit une molécule d'acide nucléique isolée renfermant une boîte MADS, capable de modifier la durée de floraison d'une plante. Cette molécule d'acide nucléique comprend, de préférence, une séquence d'acide nucléique correspondant à un gène de locus F de floraison (FLF). La molécule d'acide nucléique peut être un ADN génomique, un ADNc, ou un ARN messager. L'invention peut s'appliquer à n'importe quelle espèce de plante dicotylédone ou monocotylédone, notamment à une fleur décorative, à un légume, à un fruit, à une céréale, à de l'herbe, à un arbre, et à toute autre espèce de fleur.

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