发明名称 |
4-ketocarotenoids in flower petals |
摘要 |
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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申请公布号 |
US2004003430(A1) |
申请公布日期 |
2004.01.01 |
申请号 |
US20030392942 |
申请日期 |
2003.03.20 |
申请人 |
HAUPTMANN RANDAL;EISENREICH ROBERT;ESCHENFELDT WILLIAM;KHAMBATTA ZUBIN |
发明人 |
HAUPTMANN RANDAL;EISENREICH ROBERT;ESCHENFELDT WILLIAM;KHAMBATTA ZUBIN |
分类号 |
A01H5/00;C12N15/09;C12N15/82;(IPC1-7):A01H1/00;A61K35/78 |
主分类号 |
A01H5/00 |
代理机构 |
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