Abstract: The present invention provides isolated FAD2, FAD3, FAB1 and FAE1 genes and FAD2, FAD3, FAB1 and FAE1 protein sequences of Camelina species, e.g., Camelina sativa, mutations in Camelina FAD2, FAD3, FAB1 and FAE1 genes, and methods of using the same. In addition, methods of altering Camelina seed composition and/or improving Camelina seed oil quality are disclosed. Furthermore, methods of breeding Camelina cultivars to produce plants having altered or improved seed oil and/or meal quality are provided.

Abstract: Acetolactate synthase (ALS), a key enzyme in the biosynthesis of valine, leucine and isoleucine in plants is inhibited by herbicides comprising imidazolinones. The present invention relates to Arabidopsis thaliana genes encoding a mutant acetolactate synthase (ALS) enzyme that is specifically resistant to imidazolinone herbicides. Exemplary of these genes are DNA sequences which encode an amino acid substitution at position 122 or an amino acid substitution at position 205 of the wild-type ALS enzyme in Arabidopsis thaliana, ecotype Columbia or an amino acid substitution at position 205 of the wild-type ALS enzyme in Arabidopsis thaliana, ecotype Landsberg erecta. The mutant ALS genes can be used to transform plants to herbicide resistance; in this regard, the invention also provides host cells and vectors containing the gene, which cells and vectors are useful in the transformation process.