Brassica or helianthus plants having mutant delta-12 or...

Details Brassica or helianthus plants having mutant delta-12 or... Brassica or helianthus plants having mutant delta-12 or...

2006-11-14

2006-11-14

McElwain, Elizabeth F. (Department: 1638)

Multicellular living organisms and unmodified parts thereof and

Method of using a plant or plant part in a breeding process...

Breeding for altered fat, fatty oil, ester-type wax, or...

C800S270000, C536S023100

Reexamination Certificate

active

07135614

ABSTRACT:
Plants are disclosed that contain a mutation in a delta-12 or delta-15 fatty acid desaturase gene. Preferred plants are rapeseed and sunflower plants. Plants carrying such mutant genes have altered fatty acid composition in seeds. In one embodiment, a plant contains a mutation in a region having the conserved motif His-Xaa-Xaa-His, found in delta-12 and delta-15 fatty acid desaturases. A preferred motif has the sequence His-Glu-Cys-Gly-His. A preferred mutation in this motif has the amino acid sequence His-Lys-Cys-Gly-His. Nucleic acid fragments are disclosed that comprise a sequence of at least 20 nucleotides from a mutant delta-12 or delta-15 fatty acid desaturase gene.

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