Transgenic plants with enhanced agronomic traits

• US 20110004955A1
• Filed: 01/29/2009
• Published: 01/06/2011
• Est. Priority Date: 01/30/2008
• Status: Abandoned Application

• Current Assignee: Monsanto Technology LLC (Bayer AG)
• Original Assignee: Monsanto Technology LLC (Bayer AG)
• Inventors: Brustad, Kraig, Gabbert, Karen K., Rajani, M. S., Bell, Erin, Iandolino, Albert, Cerny, R. Eric, Abad, Mark, Davis, Julie, Goldman, Barry S., Ravanello, Monica, Zhao, Jianmin, McDill, Bradley, Neelam, Anil, Sangeetha, S., Pitkin, John, Ambika, T., Edgerton, Michael D., He, Steve, Chittoor-Vijayanath, Jaishree M., Wu, Xiaoyun, Heard, Jacqueline E., Venkatesh, T. V., Petracek, Marie, Morrell, Peter, Hauge, Brian, Dezwaan, Todd, Rodriguez, Maria F., Chomet, Paul, Madappa, Savitha, Ruff, Thomas, Vijayalakshmi, K., Li, Ping, Ursin, Virginia, Deng, Molian, Vidya, K. R., Char, Shobha, Meister, Robert J., Ramachandra, Dhanalakshmi, Lutfiyya, Linda
• Application Number:
  US12/322,120
• Publication Number:
  US 20110004955A1
• Time in Patent Office: Days
• US Class Current: 800/275
• CPC Class Codes: C07K 14/415 from plants
• CPC Class Codes: C12N 15/8247 involving modified lipid metabolism, e.g. seed oil composition
• CPC Class Codes: C12N 15/8251 Amino acid content, e.g. synthetic storage proteins, altering amino acid biosynthesis
• CPC Class Codes: C12N 15/8261 with agronomic (input) traits, e.g. crop yield
• CPC Class Codes: C12N 15/8271 for stress resistance, e.g. heavy metal resistance
• CPC Class Codes: C12N 15/8273 for drought, cold, salt resistance
• CPC Class Codes: C12N 15/8274 for herbicide resistance
• CPC Class Codes: C12N 15/8275 Glyphosate
• CPC Class Codes: C12Q 1/6895 for plants, fungi or algae
• CPC Class Codes: C12Q 2600/13 Plant traits
• CPC Class Codes: G01N 2333/415 from plants
• CPC Class Codes: G01N 33/68 involving proteins, peptides or amino acids involving lipoproteins G01N33/92
• CPC Class Codes: Y02A 40/146 Genetically Modified [GMO] plants, e.g. transgenic plants

Abstract

This invention provides transgenic plant cells with recombinant DNA for expression of proteins that are useful for imparting enhanced agronomic trait(s) to transgenic crop plants. This invention also provides transgenic plants and progeny seed comprising the transgenic plant cells where the plants are selected for having an enhanced trait selected from the group of traits consisting of enhanced water use efficiency, enhanced cold tolerance, increased yield, enhanced nitrogen use efficiency, enhanced seed protein and enhanced seed oil. Also disclosed are methods for manufacturing transgenic seed and plants with enhanced traits.

Claims

1. A recombinant DNA construct comprising a polynucleotide encoding a protein that has an amino acid sequence having at least 95% identity over at least 95% of the length of a reference sequence selected from the group consisting of SEQ ID NO:

122-242 when said amino acid sequence is aligned with said reference sequence.

2. A recombinant DNA construct comprising a promoter that is functional in a plant cell and that is operably linked to a polynucleotide that, when expressed in a plant cell:

(a) encodes a protein;

i) having an amino acid sequence selected from the group consisting of SEQ ID NO;

123-140, 145-151, 153-173, 175-187, 189, 191-202, 204-207, 209-238, and 242;

ii) having an amino acid sequence having at least 95% identity over at least 95% of a reference sequence selected from the group consisting of SEQ ID NO;

123-140, 145-151, 153-173, 175-187, 189, 191-202, 204-207, 209-238, and 242 when said amino acid sequence is aligned to said reference sequence;

or

iii) that is a homolog of a protein with an amino acid sequence selected from the group consisting of SEQ ID NO;

123-140, 145-151, 153-173, 175-187, 189, 191-202, 204-207, 209-238, and 242;

or

(b) is transcribed into an RNA molecule that suppresses the level of an endogenous protein in said plant cell wherein said endogenous protein has an amino acid sequence selected from the group consisting of SEQ ID NO;

122, 141-144, 152, 174, 188, 190, 203, 208, or 239-241 or is a homolog thereof;

wherein said construct is stably integrated into plant chromosomal DNA.

3. A transgenic plant cell comprising the recombinant DNA construct of claim 2 wherein said plant cell is in a plant selected by screening a population of transgenic plants that have been transformed with said construct for an enhanced trait as compared to control plants;

and wherein said enhanced trait is enhanced water use efficiency, enhanced cold tolerance, increased yield, enhanced nitrogen use efficiency, enhanced seed protein or enhanced seed oil.

4. A mixture comprising plant cells of claim 3 and an antibody to a protein produced in said cells wherein said protein has an amino acid sequence that has at least 95% identity over at least 95% of the length of a reference sequence selected from the group consisting of SEQ ID NO:

122-242 when said amino acid sequence is aligned to said reference sequence.

5. The plant cell of claim 3 further comprising DNA expressing a protein that provides tolerance from exposure to an herbicide comprising an agent applied at levels that are lethal to a wild type of said plant cell.

6. The plant cell of claim 5 wherein the agent of said herbicide is a glyphosate, dicamba, or glufosinate compound.

7. A transgenic plant comprising a plurality of plant cells of claim 3.

8. The transgenic plant of claim 7 which is homozygous for said recombinant DNA.

9. A transgenic seed comprising a plurality of plant cells of claim 3.

10. The transgenic seed of claim 9 from a corn, soybean, cotton, canola, alfalfa, wheat, rice, sugarcane, or sugar beet plant.

11. Grain comprising transgenic seed identifiable by the recombinant DNA construct of claim 2.

12. Seed meal produced from transgenic seed identifiable by the recombinant DNA construct of claim 2.

13. A transgenic pollen grain comprising a haploid derivative of a plant cell nucleus having a chromosome comprising the recombinant DNA construct of claim 2.

14. A method for manufacturing non-natural, transgenic seed that can be used to produce a crop of transgenic plants with an enhanced trait resulting from expression of the stably-integrated, recombinant DNA construct of claim 2, said method comprising:

(a) screening a population of plants for said enhanced trait and said recombinant DNA, wherein individual plants in said population exhibit said trait at a level less than, essentially the same as or greater than the level that said trait is exhibited in control plants which do not contain said recombinant DNA, wherein said enhanced trait is selected from the group of enhanced traits consisting of enhanced water use efficiency, enhanced cold tolerance, increased yield, enhanced nitrogen use efficiency, enhanced seed protein and enhanced seed oil;

(b) selecting from said population one or more plants that exhibit said trait at a level greater than the level that said trait is exhibited in control plants, and

(c) collecting seed from selected plant from step b.

15. The method of claim 14 wherein said method for manufacturing said transgenic seed further comprises:

(a) verifying that said recombinant DNA is stably integrated in said selected plants, and

(b) analyzing tissue of said selected plant to determine the expression or suppression of a protein having the function of a protein having an amino acid sequence selected from the group consisting of one of SEQ ID NOs;

122-242.

16. The method of claim 15 wherein said seed is corn, soybean, cotton, canola, alfalfa, wheat, rice, sugarcane, or sugar beet seed.

17. A method of producing hybrid corn seed comprising:

(a) acquiring hybrid corn seed from an herbicide tolerant corn plant which also has the stably-integrated, recombinant DNA construct of claim 2;

(b) producing corn plants from said hybrid corn seed, wherein a fraction of the plants produced from said hybrid corn seed is homozygous for said recombinant DNA, a fraction of the plants produced from said hybrid corn seed is hemizygous for said recombinant DNA, and a fraction of the plants produced from said hybrid corn seed has none of said recombinant DNA;

(c) selecting corn plants which are homozygous and hemizygous for said recombinant DNA by treating with an herbicide;

(d) collecting seed from herbicide-treated-surviving corn plants and planting said seed to produce further progeny corn plants;

(e) repeating steps (c) and (d) at least once to produce an inbred corn line; and

(f) crossing said inbred corn line with a second corn line to produce hybrid seed.