Fatty acid hydroperoxide lyase nucleic acid sequences

C - Chemistry – Metallurgy – 12 – N

Patent

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C12N 15/82 (2006.01) A01H 5/00 (2006.01) C12N 1/21 (2006.01) C12N 9/88 (2006.01) C12N 15/60 (2006.01) C12Q 1/68 (2006.01)

Patent

CA 2301856

This invention relates to plant Hydroperoxide Lyase or HPO lyase polynucleotides and polypeptides. DNA constructs useful for the expression of a plant HPO lyase in a cell are described. Furthermore, DNA constructs useful for the antisense expression of a plant HPO lyase in a plant cell are described. Such constructs will contain a DNA sequence encoding the plant HPO lyase of interest under the control of regulatory elements capable of preferentially directing the expression of the plant HPO lyase in plant tissue, when such a construct is expressed in a transgenic plant. This invention also relates to methods of using a DNA sequence encoding a plant HPO lyase for the modification of the volatile aldehydes in plant tissues, as well as for methods of increasing disease resistance in a plant.

L'invention concerne une hydroperoxyde lyase de plante et des polynucléotides ou des polypeptides de HPO lyase ; des produits de recombinaison d'ADN utiles pour l'expression d'une HPO lyase de plante dans une cellule ; des produits de recombinaison d'ADN utiles pour l'expression antisens d'une HPO lyase de plante dans une cellule de plante. Ces produits de recombinaison contiendront une séquence d'ADN codant la HPO lyase de plante sous le contrôle d'éléments régulateurs capables de diriger de façon préférentielle l'expression de cette HPO lyase dans le tissu de la plante, quand ce produit de recombinaison est exprimé dans une plante transgénique. Elle concerne également des procédés de mise en application d'une séquence d'ADN codant une HPO lyase de plante afin de modifier les aldéhydes volatils dans le tissu de la plante, ainsi que des procédés servant à augmenter la résistance d'une plante à des maladies.

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