FAD3 performance loci and corresponding target site specific binding proteins capable of inducing targeted breaks
A method of gene editing or gene stacking within a FAD3 loci by cleaving, in a site directed manner, a location in a FAD3 gene in a cell, to generate a break in the FAD3 gene and then ligating into the break a nucleic acid molecule associated with one or more traits of interest is disclosed.
1. A transgenic cell comprising an exogenous nucleotide sequence integrated into a FAD3A, FAD3A′, FAD3A″, FAD3C, FAD3C″ and/or a FAD3C′ gene, wherein the exogenous nucleotide sequence is integrated into a target site using a nuclease that binds to the target site as shown in SEQ ID NOs: 20-23, SEQ ID NOs: 25-38, SEQ ID NOs: 40-45, SEQ ID NO: 47 and SEQ ID NO: 49.
2. The transgenic cell of claim 1 , wherein the exogenous nucleotide sequence comprises a sequence encoding a polypeptide.
3. The transgenic cell of claim 1 , wherein the exogenous nucleotide sequence is a non-coding sequence.
4. The transgenic cell of claim 2 , wherein the polypeptide confers herbicide resistance.
5. The transgenic cell of claim 1 , wherein the exogenous nucleotide sequence is integrated into some but not all copies of the FAD3A, FAD3A′, FAD3A″, FAD3C, FAD3C″ and/or a FAD3C′ gene.
6. A transgenic plant or seed, comprising the transgenic cell of claim 1 .
7. The transgenic cell of claim 1 , wherein presence of the exogenous nucleotide sequence in the FAD3A, FAD3A′, FAD3A″, FAD3C, FAD3C″ and/or a FAD3C′ gene does not negatively influence the agronomic or quality properties of a plant comprising the cell.
8. A method for making a cell according to claim 1 , the method comprising:
cleaving, in a site specific matter, a FAD3A, FAD3A′, FAD3A″, FAD3C, FAD3C″ and/or a FAD3C′ gene, using a nuclease that binds to the target site as shown in SEQ ID NOs: 20-23, SEQ ID NOs: 25-38, SEQ ID NOs: 40-45, SEQ ID NO: 47 and SEQ ID NO: 49, to thereby generate a break in the FAD3 gene;
integrating into the break the exogenous nucleotide sequence.
9. The method according to claim 1 , wherein the nuclease comprises a DNA-binding domain and a cleavage domain or cleavage half-domain into the cell, wherein the nuclease binds with specificity to the target site and cleaves at or near the target site to thereby generate the break.
10. The method according to claim 9 , wherein the DNA-binding domain is selected from a group comprising a meganuclease DNA-binding domain, a leucine zipper DNA-binding domain, a transcription activator-like (TAL) DNA-binding domain, a recombinase, a RNA-guided CRISPR-Cas9, a zinc finger protein DNA-binding domain, and chimeric combinations of any of the foregoing.
11. The method according to claim 9 , wherein the cleavage domain or cleavage half-domain is selected from a group consisting of a cleavage half-domain from a type IIS restriction endonuclease, a cleavage half-domain from FokI endonuclease, a cleavage half-domain from StsI endonuclease, and a homing endonuclease.
12. The method according to claim 9 , wherein the zinc finger protein is a zinc finger nuclease.
13. The method according to claim 12 , wherein the zinc finger nuclease comprises from three to six zinc finger domains, each zinc finger domain comprising a recognition helix region, wherein the zinc finger protein comprises the recognition helix regions ordered and shown in a single row of Table 3.
14. The method according to claim 8 , wherein the cleaving in a site specific manner is specific for some but not all copies of a FAD3A, FAD3A′, FAD3A″, FAD3C, FAD3C″ and/or a FAD3C′.
15. The method according to claim 8 , wherein the cell is a plant.
16. The method according to claim 8 , wherein the break is a double strand break.
17. The method according to claim 8 , wherein the exogenous nucleotide sequence encodes a protein.
18. The method according to claim 17 , wherein the nucleic acid sequence of interest is selected from the group consisting of insecticidal resistance genes, herbicide tolerance genes, nitrogen use efficiency genes, water use efficiency genes, nutritional quality genes, DNA binding genes, and selectable marker genes.
19. The method according to claim 8 , wherein the exogenous nucleotide sequence of interest comprises a DNA-binding domain binding site.
20. The method according to claim 8 , wherein the nuclease is introduced into the cell as a polynucleotide encoding the fusion protein.