Transgenic plants producing trehalose

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/55 (2006.01) A01H 5/00 (2006.01) A01H 5/10 (2006.01) A23L 1/06 (2006.01) C12N 9/10 (2006.01) C12N 9/16 (2006.01) C12N 15/54 (2006.01) C12N 15/82 (2006.01) C13K 13/00 (2006.01)

Patent

CA 2193861

The present invention concerns transgenic plants producing trehalose and methods of increasing the trehalose content of plants. According to the invention, the plants of interest are transformed with the coding sequence of a gene for trehalose-6-phosphate synthase fused to a non-constitutive plant promoter, which allows for temporal, topological or stress-induced control over the expression of the gene. The invention can be used for protecting staple crop plants against drought, high salinity or temperature extremes and for improving the storage properties of harvested plants including green food stuffs, picked fruits and ornamental plants.

L'invention porte sur des plantes transgéniques productrices de tréhalose et sur un procédé pour accroître la teneur de plantes en tréhalose. Selon cette invention, les plantes concernées sont transformées à l'aide d'une séquence d'un gène codant pour la tréhalose-6-phosphate synthase fondue en un promoteur non constitutif de la plante qui assure un contrôle temporel, topologique et fonction des agressions de l'expression du gène. L'invention peut servir à protéger les récoltes de plantes de première nécessité contre la sécheresse, la forte salinité, les températures extrêmes, et pour améliorer les propriétés de stockage des récoltes, y compris des légumes verts, des fruits cueillis et des plantes ornementales.

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