4-ketocarotenoids in flower petals

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7223909
APP PUB NO 20040003430A1
SERIAL NO

10392942

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Abstract

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The formation of a carotenoid compound containing a 4-keto-.beta.-ionene ring such as astaxanthin or canthaxanthin in flowers, and particularly in the corolla and reproductive parts of a flower of a higher plant whose flowers produce a carotenoid compound containing a .beta.-ionene ring such as .beta.-carotene or zeaxanthin, but otherwise do not produce astaxanthin or canthaxanthin is disclosed. One or more genes controlled by a promoter are inserted (transformed) into a higher plant. The inserted gene encodes a chimeric enzyme including (a) a carotenoid-forming enzyme that is at least a ketolase. That gene is operatively linked to (b) a plastid-directed transit peptide. Some higher plants to be transformed produce at least zeaxanthin or .beta.-carotene in their flowers prior to transformation, whereas other plants produce little if any colored carotenoid pigments prior to transformation and are transformed with a cassette of carotenoids-forming genes. Methods of transformation and use of the transformed plants are described.

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Patent Owner(s)

Patent OwnerAddress
BALL HORTICULTURAL622 TOWN ROAD WEST CHICAGO IL 60185

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Eisenreich, Robert North Aurora, IL 4 9
Eschenfeldt, William St. Charles, IL 1 3
Hauptmann, Randal Oswego, IL 11 111
Khambatta, Zubin Orland Park, IL 2 18

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