DGAT genes for increased seed storage lipid production and altered fatty acid profiles in oilseed plants
Transgenic oilseeds having increased total fatty acid content of at least 10% and altered fatty acid profiles when compared to the total fatty acid content of null segregant oilseeds are described. Novel DGAT genes are used to achieve the increase in seed storage lipids.
1. An oilseed comprising a type 1 plant DGAT sequence having 80% sequence identity to SEQ ID NO: 153 and further comprising at least one of the following amino acid substitutions: a non-alanine at a position corresponding to position 146 of SEQ ID NO: 153 to alanine; a non-lysine at a position corresponding to position 206 of SEQ ID NO: 153 to lysine; a non-leucine at a position corresponding to position 273 of SEQ ID NO: 153 to leucine; a non-valine at a position corresponding to position 364 of SEQ ID NO: 153 to valine; and a non-valine at a position corresponding to position 483 of SEQ ID NO: 153 to valine, the oilseed having an increased total fatty acid content of at least 10% when compared to the total fatty acid content of an oilseed instead comprising a corresponding type 1 plant DGAT sequence not comprising the amino acid substitutions.
2. The oilseed of claim 1 , wherein the oilseed is a soybean seed.
3. The oilseed of claim 1 , wherein the type 1 plant DGAT sequence further comprises at least one of the following amino acid substitutions: a non-methionine at a position corresponding to position 170 of SEQ ID NO: 153 to methionine; a non-glutamic acid at a position corresponding to position 258 of SEQ ID NO: 153 to glutamic acid; and a non-serine at a position corresponding to position 422 of SEQ ID NO: 153 to serine.
4. The oilseed of claim 1 , wherein the type 1 plant DGAT sequence further comprises at least one of the following amino acid substitutions: a non-asparagine at a position corresponding to position 58 of SEQ ID NO: 153 to asparagine; a non-phenylalanine at a position corresponding to position 231 of SEQ ID NO: 153 to phenylalanine; a non-threonine at a position corresponding to position 264 of SEQ ID NO: 153 to threonine; a non-valine at a position corresponding to position 303 of SEQ ID NO: 153 to valine; a non-methionine at a position corresponding to position 440 of SEQ ID NO: 153 to methionine; and a non-lysine at a position corresponding to position 467 of SEQ ID NO: 153 to lysine.
5. The oilseed of claim 1 , wherein the type 1 plant DGAT sequence further comprises each of the following amino acid substitutions: a non-methionine at a position corresponding to position 170 of SEQ ID NO: 153 to methionine; a non-glutamic acid at a position corresponding to position 258 of SEQ ID NO: 153 to glutamic acid; and a non-serine at a position corresponding to position 422 of SEQ ID NO: 153 to serine.
6. The oilseed of claim 1 , wherein said type 1 plant DGAT comprises at least 90% sequence identity to SEQ ID NO: 153.
7. The oilseed of claim 1 , wherein said type 1 plant DGAT comprises at least 95% sequence identity to SEQ ID NO: 153.
8. The soybean seed of claim 2 , wherein the type 1 plant DGAT sequence further comprises at least one of the following amino acid substitutions: a non-methionine at a position corresponding to position 170 of SEQ ID NO: 153 to methionine; a non-glutamic acid at a position corresponding to position 258 of SEQ ID NO: 153 to glutamic acid; and a non-serine at a position corresponding to position 422 of SEQ ID NO: 153 to serine.
9. The soybean seed of claim 2 , wherein the type 1 plant DGAT sequence further comprises at least one of the following amino acid substitutions: a non-asparagine at a position corresponding to position 58 of SEQ ID NO: 153 to asparagine; a non-phenylalanine at a position corresponding to position 231 of SEQ ID NO: 153 to phenylalanine; a non-threonine at a position corresponding to position 264 of SEQ ID NO: 153 to threonine; a non-valine at a position corresponding to position 303 of SEQ ID NO: 153 to valine; a non-methionine at a position corresponding to position 440 of SEQ ID NO: 153 to methionine; and a non-lysine at a position corresponding to position 467 of SEQ ID NO: 153 to lysine.
10. The soybean seed of claim 9 , wherein the type 1 plant DGAT sequence further comprises at least one of the following amino acid substitutions: a non-methionine at a position corresponding to position 170 of SEQ ID NO: 153 to methionine; a non-glutamic acid at a position corresponding to position 258 of SEQ ID NO: 153 to glutamic acid; and a non-serine at a position corresponding to position 422 of SEQ ID NO: 153 to serine.
11. The soybean seed of claim 2 , wherein said type 1 plant DGAT comprises at least 90% sequence identity to SEQ ID NO: 153.
12. The soybean seed of claim 2 , wherein said type 1 plant DGAT comprises at least 95% sequence identity to SEQ ID NO: 153.
13. A method of producing a food or feed product, said method comprising: (a) obtaining the oilseed of claim 1 ; and (b) processing the oilseed to produce a food or feed product.
14. The method of claim 13 , wherein type 1 plant DGAT sequence further comprises at least one of the following amino acid substitutions: a non-methionine at a position corresponding to position 170 of SEQ ID NO: 153 to methionine; a non-glutamic acid at a position corresponding to position 258 of SEQ ID NO: 153 to glutamic acid; and a non-serine at a position corresponding to position 422 of SEQ ID NO: 153 to serine.
15. The method of claim 13 , wherein type 1 plant DGAT sequence further comprises at least one of the following amino acid substitutions: a non-asparagine at a position corresponding to position 58 of SEQ ID NO: 153 to asparagine; a non-phenylalanine at a position corresponding to position 231 of SEQ ID NO: 153 to phenylalanine; a non-threonine at a position corresponding to position 264 of SEQ ID NO: 153 to threonine; a non-valine at a position corresponding to position 303 of SEQ ID NO: 153 to valine; a non-methionine at a position corresponding to position 440 of SEQ ID NO: 153 to methionine; and a non-lysine at a position corresponding to position 467 of SEQ ID NO: 153 to lysine.
16. The method of claim 15 , wherein type 1 plant DGAT sequence further comprises at least one of the following amino acid substitutions: a non-methionine at a position corresponding to position 170 of SEQ ID NO: 153 to methionine; a non-glutamic acid at a position corresponding to position 258 of SEQ ID NO: 153 to glutamic acid; and a non-serine at a position corresponding to position 422 of SEQ ID NO: 153 to serine.
17. A method of producing a food or feed product, said method comprising: (a) obtaining the soybean seed of claim 2 ; and (b) processing the soybean seed to produce a food or feed product.
18. The method of claim 17 , wherein type 1 plant DGAT sequence further comprises at least one of the following amino acid substitutions: a non-methionine at a position corresponding to position 170 of SEQ ID NO: 153 to methionine; a non-glutamic acid at a position corresponding to position 258 of SEQ ID NO: 153 to glutamic acid; and a non-serine at a position corresponding to position 422 of SEQ ID NO: 153 to serine.
19. The method of claim 17 , wherein type 1 plant DGAT sequence further comprises at least one of the following amino acid substitutions: a non-asparagine at a position corresponding to position 58 of SEQ ID NO: 153 to asparagine; a non-phenylalanine at a position corresponding to position 231 of SEQ ID NO: 153 to phenylalanine; a non-threonine at a position corresponding to position 264 of SEQ ID NO: 153 to threonine; a non-valine at a position corresponding to position 303 of SEQ ID NO: 153 to valine; a non-methionine at a position corresponding to position 440 of SEQ ID NO: 153 to methionine; and a non-lysine at a position corresponding to position 467 of SEQ ID NO: 153 to lysine.
20. The method of claim 19 , wherein type 1 plant DGAT sequence further comprises at least one of the following amino acid substitutions: a non-methionine at a position corresponding to position 170 of SEQ ID NO: 153 to methionine; a non-glutamic acid at a position corresponding to position 258 of SEQ ID NO: 153 to glutamic acid; and a non-serine at a position corresponding to position 422 of SEQ ID NO: 153 to serine.