Manipulation of plant senescence using an myb gene promoter...

C - Chemistry – Metallurgy – 12 – N

Patent

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C12N 15/11 (2006.01) A01H 1/00 (2006.01) A01H 3/00 (2006.01) A01H 5/00 (2006.01) C12N 15/63 (2006.01) C12N 15/82 (2006.01)

Patent

CA 2421212

The present invention relates to methods of manipulating senescence in plants. The invention also relates to vectors useful in such methods, transformed plants with modified senescence characteristics and plant cells, seeds and other parts of such plants. Specifically the present invention provides a method of manipulating senescence in a plant, said method including introducing into said plant a genetic construct including a myb gene promoter, or functionally active fragment or variant thereof, operably linked to a gene encoding an enzyme involved in biosynthesis of a cytokinin, or a functionally active fragment or variant thereof.

L'invention concerne des méthodes de manipulation de sénescence dans des plantes. Elle concerne également des vecteurs utilisés dans de telles méthodes, des plantes transformées par des caractéristiques de sénescence modifiées, ainsi que des cellules de plantes, graines et autres parties de telles plantes. Plus particulièrement, l'invention concerne une méthode de manipulation de sénescence dans une plante, consistant à introduire dans ladite plante un produit de recombinaison génétique comprenant un promoteur de gène myb, ou un fragment ou variant fonctionnellement actif de celui-ci, lié de façon opérationnelle à un gène codant pour une enzyme impliquée dans une biosynthèse d'une cytokinine, ou un fragment ou un variant fonctionnellement actif de celle-ci.

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