Nucleic acid molecules that confer resistance to coleopteran pests

Patent metadata

Field	Value
Publication number	US-10676745-B2
Application number	US-201414577854-A
Country	US
Kind code	B2
Filing date	Dec 19, 2014
Priority date	Dec 20, 2013
Publication date	Jun 9, 2020
Grant date	Jun 9, 2020

Abstract

This disclosure concerns nucleic acid molecules and methods of use thereof for control of coleopteran pests through RNA interference-mediated inhibition of target coding and transcribed non-coding sequences in coleopteran pests. The disclosure also concerns methods for making transgenic plants that express nucleic acid molecules useful for the control of coleopteran pests, and the plant cells and plants obtained thereby.

First claim

What is claimed is:

1. An isolated nucleic acid molecule comprising a polynucleotide operably linked to a heterologous promoter, wherein the polynucleotide encodes a double-stranded ribonucleic acid (dsRNA) molecule, the polynucleotide comprising:
a first nucleotide sequence comprising at least 23 contiguous nucleotides of a nucleotide sequence selected from the group consisting of SEQ ID NOs:1-3;
a second nucleotide sequence; and
a third nucleotide sequence that is at least 90% complementary to the reverse complement of the first nucleotide sequence,
wherein the second nucleotide sequence is located between the first and third nucleotide sequences in the polynucleotide.

2. The nucleic acid molecule of claim 1 , wherein the first nucleotide sequence is SEQ ID NO:2 or SEQ ID NO:3.

3. The nucleic acid molecule of claim 1 , wherein the heterologous promoter is functional in a plant cell.

4. A hairpin RNA (hpRNA) molecule with a stem and a loop structure, comprising:
a first ribonucleotide sequence comprising at least 23 contiguous nucleotides of a nucleotide sequence selected from the group consisting of SEQ ID NOs:71-73; and
a second ribonucleotide sequence,
wherein the stem structure comprises the first ribonucleotide sequence hybridized to a third ribonucleotide sequence in the hpRNA molecule, and
wherein the loop structure comprises the second ribonucleotide sequence.

5. A prokaryotic cell comprising the nucleic acid molecule of claim 1 .

6. A transgenic plant cell comprising the nucleic acid molecule of claim 3 .

7. A transgenic plant material comprising the nucleic acid molecule of claim 1 , wherein the heterologous promoter is functional in cells of the plant material.

8. The transgenic plant material of claim 7 , wherein the plant material is a seed.

9. A transgenic plant comprising the nucleic acid molecule of claim 1 , wherein the heterologous promoter is functional in cells of the plant.

10. The transgenic plant material of claim 7 , wherein the plant material is corn or soybean plant material.

11. The transgenic plant material of claim 10 , wherein the plant material is a corn plant material.

12. The transgenic plant of claim 9 , wherein the plant is corn or soybean.

13. The transgenic plant of claim 12 , wherein the plant is corn.

14. A transgenic plant commodity product comprising a detectable amount of the nucleic acid molecule of claim 3 , wherein the commodity product is selected from the group consisting of meals, oils, crushed grains, whole grains, and any food product comprising a meal, oil, crushed grain, or whole grain.

15. The nucleic acid molecule of claim 1 , wherein the third nucleotide sequence is at least 95% identical to the reverse complement of the first nucleotide sequence.

16. The nucleic acid molecule of claim 1 , wherein the third nucleotide sequence comprises the reverse complement of the first nucleotide sequence.

17. The nucleic acid molecule of claim 16 , wherein the polynucleotide is SEQ ID NO:14 or SEQ ID NO:15.

18. The nucleic acid molecule of claim 16 , wherein the heterologous promoter is functional in a plant cell.

19. The dsRNA molecule encoded by the polynucleotide of the nucleic acid molecule of claim 1 .

20. A prokaryotic cell comprising the nucleic acid molecule of claim 16 .

21. A transgenic plant cell comprising the hpRNA molecule of claim 4 .

22. A transgenic plant material comprising the hpRNA molecule of claim 4 .

23. The transgenic plant material of claim 22 , wherein the plant material is a seed.

24. A transgenic plant comprising the hpRNA molecule of claim 4 .

25. The transgenic plant material of claim 22 , wherein the plant material is corn or soybean plant material.

26. The transgenic plant of claim 24 , wherein the plant is corn or soybean.

27. A transgenic plant commodity product comprising a detectable amount of the nucleic acid molecule of claim 16 , wherein the commodity product is selected from the group consisting of meals, oils, crushed grains, whole grains, and any food product comprising a meal, oil, crushed grain, or whole grain.

28. The nucleic acid molecule of claim 1 , wherein the second nucleotide sequence comprises SEQ ID NO:17.

29. A method for controlling a coleopteran insect population, the method comprising feeding insects of the population with an agent comprising the hpRNA molecule of claim 4 .

30. The method according to claim 29 , wherein the agent is a sprayable composition.

31. The method according to claim 29 , wherein the agent is a host plant material of the coleopteran insect comprising the hpRNA molecule.

32. The method according to claim 31 , wherein the host plant material is a transgenic host plant material that expresses the hpRNA molecule.

33. A method for improving the yield of a corn crop, the method comprising:
cultivating in the crop the transgenic plant of claim 26 , such that the hpRNA molecule is expressed.

34. A transgenic corn plant comprising a polynucleotide operably linked to a heterologous promoter, wherein the polynucleotide encodes a hairpin ribonucleic acid (hpRNA) molecule, the polynucleotide comprising, in the 5′ to 3′ direction:
a nucleotide sequence comprising SEQ ID NO:3;
SEQ ID NO:17; and
a nucleotide sequence that is at least 90% complementary to the reverse complement of SEQ ID NO:3.

Assignees

• Dow Agrosciences Llc
• Fraunhofer Ges Forschung

Inventors

• Narva Kenneth E
• Arora Kanika
• Rangasamy Muregesan
• Veeramani Balaji
• Gandra Premchand
• Worden Sarah E
• Li Huarong
• Vilcinskas Andreas
• Knorr Eileen

Classifications

• C12N15/1137 Primary

  against enzymes (viral enzymes C12N15/1131; receptors C12N15/1138) · CPC title

• C12N15/8286

  for insect resistance · CPC title

• C12N2310/531

  Stem-loop; Hairpin · CPC title

• C12N15/8218

  Antisense, co-suppression, viral induced gene silencing [VIGS], post-transcriptional induced gene silencing [PTGS] · CPC title

• C12N2310/14

  interfering nucleic acids [NA] · CPC title