Methods for producing parthenocarpic or female sterile...

C - Chemistry – Metallurgy – 12 – N

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C12N 15/82 (2006.01) A01H 5/00 (2006.01) C07K 14/21 (2006.01) C12N 5/10 (2006.01) C12N 15/31 (2006.01)

Patent

CA 2275974

Described is the use of the promoter region of the DefH9 gene of Anthirrhinum majus or of a promoter of a homologous gene displaying the same expression pattern and characteristics for the establishment of parthenocarpy or female sterility in plants, for increasing gynogenesis or for enhancing fruit setting and development. Also described are recombinant DNA molecules comprising a DefH9 promoter in combination with a DNA sequence which upon expression in plants leads to the above mentioned effects. Furthermore, described are plant cells and plants transformed with such recombinant DNA molecules.

L'invention concerne l'utilisation de la région du promoteur du gène DefH9 d'Anthirrhinum majus ou d'un promoteur d'un gène homologue présentant le même motif d'expression et les mêmes caractéristiques, en vue de l'établissement d'une parthénocarpie ou d'une stérilité de plantes femelles dans le but d'accroître une gynogenèse ou pour améliorer la nouaison et le développement de fruits. Des molécules d'ADN recombinées sont également décrites, dont notamment un promoteur de DefH9 en combinaison avec une séquence d'ADN qui, après expression dans des plantes, produit les effets mentionnés précédemment. De plus, des cellules de plantes et des plantes transformées à l'aide de telles molécules d'ADN recombinées sont décrites.

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