Biological containment system

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/29 (2006.01) A01H 1/02 (2006.01) A01H 5/00 (2006.01) A01H 5/10 (2006.01) C12N 15/82 (2006.01)

Patent

CA 2499375

The invention relates to materials and methods useful for controlling the unwanted spread of transgenic traits. The methods involve a male-sterile female containing a transgene for a desired trait and a transgene causing seed infertility. The methods also involve a male-fertile plant carrying a transcription activator that activates expression of both transgenes carried by the male-sterile female. Pollination of the male-sterile female by a male- fertile plant activates expression of both transgenes in the female. The resulting seeds express the gene product of the desired trait and are infertile.

L'invention concerne des matériaux et des procédés servant à maîtriser la propagation non désirée de caractères transgéniques. Les procédés selon l'invention impliquent une plante femelle androstérile contenant un transgène pour un caractère désiré et un transgène provoquant une infertilité des semences. Les procédés selon l'invention impliquent également une plante androfertile portant un activateur de transcription qui active l'expression des deux transgènes portés par la plante femelle androstérile. La pollinisation de la plante femelle androstérile par une plante androfertile active l'expression des deux transgènes dans la plante femelle. Les semences qui en résultent expriment le produit génique du caractère désiré et sont infertiles.

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