Methods for agrobacterium-mediated transformation

A - Human Necessities – 01 – H

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A01H 4/00 (2006.01) A01H 5/00 (2006.01) C12N 15/82 (2006.01)

Patent

CA 2278618

The present invention relates to methods for improving the transformation frequency of Agrobacterium-mediated transformation of maize embryos. A preferred method for transforming maize using Agrobacterium comprises the steps of: contacting at least one immature embryo from a maize plant with Agrobacterium capable of transferring at least one gene to said embryo; co- cultivating the embryos with Agrobacterium; culturing the embryos in medium comprising N6 salts, an antibiotic capable of inhibiting the growth of Agrobacterium, and a selective agent to select for embryos expressing the gene; and regenerating plants expressing the gene.

La présente invention concerne des procédés permettant d'améliorer la fréquence de transformation d'une transformation génétique d'embryons de maïs ayant l'agrobactérie pour médiateur. Un procédé préféré de transformation génétique du maïs au moyen de l'agrobactérie consiste à: mettre en contact au moins un embryon immature d'une plante de maïs avec une agrobactérie capable de transférer au moins un gène à cet embryon; à procéder à la coculture des embryons et de l'agrobactérie; à mettre les embryons en culture dans un milieu comprenant des sels N6, un antibiotique capable d'inhiber la croissance de l'agrobactérie, et un agent de sélection permettant de sélectionner les embryons exprimant le gène; et à régénérer les plantes exprimant le gène.

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