Herbicide-tolerant plants through bypassing metabolic pathway
AssigneeBayer CropScience AG
InventorsOlivier Zink, Eric Paget, Anne Rolland, Alain Sailland, Georges Freyssinet
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Abstract
The invention concerns a novel method for making herbicide-tolerant plants, in particular to HPPD inhibiting herbicides, the nucleic acid sequences coding for enzymes capable of being used in said method, expression cassettes containing them and transgenic plants comprising at least one of said expression cassettes.
Claims31
A method for making plants tolerant to a herbicide, characterized in that at least one enzyme making it possible to bypass the metabolic pathway inhibited by said herbicide is expressed in said plant, wherein said at least one enzyme includes HPAH or HPAC.
A polypeptide, characterized in that it has HPP oxidase activity.
The polypeptide of claim 31 characterized in that it has HPAH activity.
The polypeptide of claim 31 characterized in that it has HPAC activity.
A nucleic acid sequence, characterized in that it encodes a polypeptide as claimed in claim 31.
(canceled)
A method for making plants tolerant to an herbicide which is an HPPD inhibitor, comprising the step of growing plants expressing at least one enzyme insensitive to said herbicide that allows conversion of para-hydroxyphenylpyruvate (HPP) to 4-hydroxyphenylacetic acid (4-HPA) and at least one enzyme insensitive to said herbicide that allows conversion of 4-HPA to homogentisate as a result of nucleic acid sequences encoding said enzymes being inserted into said plants.
A polypeptide characterized in that it has HPAH activity or HPAC activity.
Dependencies are inferred from the claim text.