Double strand RNA as molecular biopesticides for RNA interference through feeding in the hemipteran invasive insect pest, brown marmorated stink bug

Patent metadata

Field	Value
Publication number	US-10246710-B2
Application number	US-201715657646-A
Country	US
Kind code	B2
Filing date	Jul 24, 2017
Priority date	Jul 25, 2016
Publication date	Apr 2, 2019
Grant date	Apr 2, 2019

Abstract

The present disclosure provides compositions and methods of delivering double strand ribonucleic acid (dsRNA) to control the insect pest, the brown marmorated stink bug. Several dsRNA species that target genes are disclosed herein that can be used individually or in combination. The dsRNA species can be used to induce RNA-mediated interference (RNAi) to decrease target gene expression. RNAi can be used alone, or in combination with other pest control measures to target the brown marmorated stink bug.

First claim

What is claimed is:

1. A double-stranded ribonucleic acid (dsRNA) comprising a sense region with at least 95% sequence identity to any one of SEQ ID NOs: 56, 66, 67, or 68 and an antisense region comprising a second sequence complementary to the sense region, wherein said dsRNA is capable of inducing ribonucleic acid interference (RNAi) in an insect.

2. The dsRNA of claim 1 , wherein the sense region has at least 99% or 100% sequence identity to any one of SEQ ID NOs: 56, 66, 67, or 68.

3. The dsRNA of claim 1 , wherein the dsRNA is distributed throughout at least part of a living plant material's vascular tissues.

4. The dsRNA of claim 3 , wherein the living plant material is a fruit, vegetable, stem or leaf.

5. The dsRNA of claim 1 , wherein the dsRNA is expressed in a bacterial or yeast cell.

6. The dsRNA of claim 1 , wherein the dsRNA is expressed in a transgenic plant cell.

7. The dsRNA of claim 1 , wherein the insect is a brown marmorated stink bug.

8. A method of controlling H. halys comprising applying one or more dsRNA molecules of claim 1 to a living plant material such that the one or more dsRNA molecules are taken up and distributed by the vascular tissue of the living plant material and allowing the one or more insects to ingest an effective amount of the one or more dsRNA molecules to induce RNAi, thereby controlling the one or more insects.

9. The method of claim 8 , wherein the one or more dsRNA molecules comprise a first dsRNA molecule and a second dsRNA molecule, wherein the first dsRNA molecule comprises a sense region with at least 95% sequence identity to SEQ ID NO: 56 and an antisense region comprising a second sequence complementary to the sense region and wherein the second dsRNA molecule comprises a sense region with at least 95% sequence identity to SEQ ID NO: 68 and an antisense region comprising a second sequence complementary to the sense region.

10. A method of controlling H. halys comprising the steps of:
a) providing a living plant material containing at least one double-strand RNA (dsRNA) wherein the at least one dsRNA molecule comprises a sense region with at least 95% sequence identity to SEQ ID NOs: 56, 66, 67, or 68 and an antisense region comprising a second sequence complementary to the sense region, wherein the at least one dsRNA molecule is distributed throughout at least part of the living plant material's vascular tissues and wherein the living plant material does not contain genetic information allowing for the production of the at least one double strand dsRNA molecule;
b) allowing the insect to ingest a sufficient amount of the at least one dsRNA molecule, by feeding on the plant material, to interfere with the production of at least one protein targeted by the at least one dsRNA molecule, thereby inducing RNAi in the insect, and;
c) controlling the insect via RNAi.

11. The method of claim 10 , wherein the living plant material is a fruit, vegetable, stem or leaf.

12. The method of claim 11 , wherein the living plant material is a green bean.

13. The method of claim 10 , wherein the at least one dsRNA molecule comprises two dsRNA molecules wherein the first dsRNA molecule comprises a sense region with at least 95% sequence identity to SEQ ID NO: 56 and an antisense region comprising a second sequence complementary to the sense region and wherein the second dsRNA molecule comprises a sense region with at least 95% sequence identity to SEQ ID NO: 68 and an antisense region comprising a second sequence complementary to the sense region.

Assignees

• Us Agriculture

Inventors

• Ghosh Saikat Kumar B
• Gundersen-Rindal Dawn E

Classifications

• A01N37/46

  N-acyl derivatives · CPC title

• C12N15/8286

  for insect resistance · CPC title

• C12N15/8218

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

• A01N57/16

  containing heterocyclic radicals · CPC title

• C12N2310/14

  interfering nucleic acids [NA] · CPC title