Gene exhibiting resistance to acetolactate synthase inhibitor herbicides
AssigneeSandoz Ltd.
InventorsPaul Bernasconi, Alison R. Woodworth
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Abstract
The present invention provides a novel gene and enzyme isolated from cocklebur (Xanthium sp.) which confers resistance to several structurally unrelated classes of herbicides in plants, plant tissues and seeds. In particular, the class of herbicides consists of herbicides wherein acetolactate synthase (ALS) is the site of action and includes sulfonylureas, imidazolinones, triazolopyrimidines, pyrimidyloxybenzoates and phthalides.
Claims18
An isolated nucleic acid sequence encoding a functional acetolactate synthase enzyme (ALS) having an amino acid sequence of SEQ ID No:
- 2 or a modified ALS thereof wherein said modified ALS has about 90% or greater amino acid sequence similarity with the amino acid sequence of SEQ ID No.:
- 2 said ALS or modified ALS exhibiting herbicidal resistance to ALS herbicides.
The isolated nucleic acid sequence of SEQ ID No:1 encoding a functional ALS tolerant to inhibition by ALS herbicides.
A plant wherein the growth and development of said plant is resistant to ALS inhibition by an ALS herbicide at levels which normally inhibit the growth and development of said plant wherein said resistance is conferred by a heterologous ALS with an amino acid sequence as described in SEQ ID No:2 or a modified ALS thereof wherein said modified ALS has about 90% or greater amino acid sequence similarity with the amino acid sequence of SEQ ID No.:2.
Dependencies are inferred from the claim text.