Claims for Patent: 6,323,395

Summary for Patent: 6,323,395

Title:	Nucleotide sequences of maize and soybean .beta.-Ketoacyl-Acyl Carrier Protein Synthase II and their use in the regulation of fatty acid content of oil
Abstract:	Genes encoding .beta.-Ketoacyl-Acyl Carrier Protein Synthase II have been isolated from maize and soybean tissues. These proteins, when expressed in a plant, can alter the saturate levels of the oil.
Inventor(s):	Rubin-Wilson; Beth C. (Indianapolis, IN), Young; Scott A. (Indianapolis, IN), Folkerts; Otto (Guilford, CT)
Assignee:	Dow AgroSciences LLC (Indianapolis, IN)
Application Number:	09/212,609
Patent Claims:	1. An isolated DNA construct comprising, in the 5' to 3' direction: a promoter regulatory element, a nucleic acid fragment that encodes a .beta.-ketoacyl-acyl carrier protein synthase II isolated from maize or soybean, said nucleic acid fragment being selected from the group consisting of SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:14, SEQ ID NO:16, SEQ ID NO:17, SEQ ID NO:19, SEQ ID NO:21, and SEQ ID NO:22, and a transcriptional terminator sequence. 2. The DNA construct of claim 1 wherein said promoter regulatory element is selected from the group consisting of ubiquitin promoter, maize globulin promoter, maize streak virus enhancer region, 35s promoter, doubly enhanced 35s promoter and the first intron of maize alcohol dehydrogenase. 3. The DNA construct of claim 1 wherein said nucleic acid fragment is in the sense orientation. 4. The DNA construct of claim 1 wherein said nucleic acid fragment is in an antisense orientation. 5. An isolated nucleic acid fragment selected from the group consisting of SEQ ID NO:1, SEQ ID NO:2, SEQ ID NO:3, SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:10, SEQ ID NO:11, SEQ ID NO:12, SEQ ID NO:14, SEQ ID NO:16, SEQ ID NO:17, SEQ ID NO:19, SEQ ID NO:21, SEQ ID NO:22, SEQ ID NO:24, SEQ ID NO:25, SEQ ID NO:26, SEQ ID NO:27, and SEQ ID NO:28. 6. A DNA isolate consisting essentially of a DNA sequence encoding .beta.-ketoacyl-acyl carrier protein synthase II isolated from maize or soybean, wherein said .beta.-ketoacyl-acyl carrier protein synthase II has an amino acid sequence selected from the group consisting of SEQ ID NO:4, SEQ ID NO:6, SEQ ID NO:9, SEQ ID NO:13, SEQ ID NO:15, SEQ ID NO:18, SEQ ID NO:20, and SEQ ID NO:23. 7. A plant cell containing a DNA construct of claim 1. 8. The plant cell of claim 7 wherein said promoter regulatory element is selected from the group consisting of ubiquitin promoter, maize globulin promoter, maize streak virus enhancer region, 35s promoter, doubly enhanced 35s promoter and the first intron of maize alcohol dehydrogenase. 9. The plant cell of claim 7 wherein said nucleic acid fragment is in the sense orientation. 10. The plant cell of claim 7 wherein said nucleic acid fragment is in an antisense orientation. 11. The plant cell of claim 7 wherein said plant cell is selected from the group consisting of soybean, Brassicaceae sp., canola, rape, sunflower, flax, safflower, coconut, palm, olive, peanut, cotton, castor bean, coriander, Crambe sp., Cuphea sp., Euphorbia sp., Oenothera sp., jojoba, Lesquerella sp., marigold, Limnanthes sp., Vernonia sp., Sinapis alba, cocoa, and maize. 12. The plant cell of claim 11 wherein said plant cell is a seed embryo cell. 13. A transgenic plant produced from the plant cell of claim 7. 14. A seed, and the progeny thereof, produced from the transgenic plant of claim 13. 15. A method of producing a plant oil having altered levels of fatty acids comprising: growing a plant cell having integrated into its genome a construct comprising, in the 5' to 3' direction, a promoter regulatory element functional in a plant cell, a nucleic acid fragment that encodes a .beta.-ketoacyl-acyl carrier protein synthase II isolated from maize or soybean, said nucleic acid fragment being selected from the group consisting of SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:14, SEQ ID NO:16, SEQ ID NO:17, SEQ ID NO:19, SEQ ID NO:21, and SEQ ID NO:22, and a transcriptional terminator sequence, wherein overexpression of .beta.-ketoacyl-acyl carrier protein synthase II gene results in the production of altered levels of fatty acid in said plant cell. 16. The method of claim 15 wherein said plant cell is selected from the group consisting of soybean, Brassicaceae sp., canola, rape, sunflower, flax, safflower, coconut, palm, olive, peanut, cotton, castor bean, coriander, Crambe sp., Cuphea sp., Euphorbia sp., Oenothera sp., jojoba, Lesquerella sp., marigold, Limnanthes sp., Vernonia sp., Sinapis alba, cocoa, and maize. 17. The method of claim 15 wherein said plant cell is a seed embryo cell. 18. The method of claim 15 comprising the further step of regenerating a transgenic plant from said plant cell. 19. The method of claim 18 wherein said plant oil is isolated from said transgenic plant and the progeny thereof. 20. The method of claim 15 wherein said nucleic acid fragment is in the sense orientation. 21. The method of claim 15 wherein said nucleic acid fragment encoding is in an antisense orientation. 22. The isolated nucleic acid fragment of claim 5 selected from the group consisting of SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:14, SEQ ID NO:16, SEQ ID NO:17, SEQ ID NO:19, SEQ ID NO:21, and SEQ ID NO:22.

Details for Patent 6,323,395

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