WO 2016/191357 Al 1 December 2016 (01.12.2016) P O P C T

WO 2016/191357 Al 1 December 2016 (01.12.2016) P O P C T

(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date WO 2016/191357 Al 1 December 2016 (01.12.2016) P O P C T (51) International Patent Classification: AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, A 57/16 (2006.01) A01N 65/00 (2009.01) BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, C12N 15/82 (2006.01) DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, (21) International Application Number: KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, PCT/US2016/033749 MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, (22) International Filing Date: PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, 23 May 20 16 (23.05.2016) SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (25) Filing Language: English (84) Designated States (unless otherwise indicated, for every (26) Publication Language: English kind of regional protection available): ARIPO (BW, GH, (30) Priority Data: GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, 62/166,985 27 May 2015 (27.05.2015) US TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, (71) Applicant: DOW AGROSCIENCES LLC [US/US]; DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, 9330 Zionsville Road, Indianapolis, IN 46268 (US). LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, (72) Inventors: NARVA, Kenneth; 9330 Zionsville Road, In GW, KM, ML, MR, NE, SN, TD, TG). dianapolis, IN 46268 (US). FISHILEVICH, Elane; 9330 Zionsville Road, Indianapolis, IN 46268 (US). FREY, Declarations under Rule 4.17 : Meghan L.; 1090 Fiesta Drive, Greenwood, IN 46143 — as to applicant's entitlement to apply for and be granted a (US). RANGASAMY, Murugesan; 9330 Zionsville patent (Rule 4.1 7(H)) Road, Indianapolis, IN 46268 (US). WORDEN, Sarah, E.; 9330 Zionsville Road, Indianapolis, IN 46268 (US). Published: GANDRA, Premchand; 9330 Zionsville Road, Indiana — with international search report (Art. 21(3)) polis, IN 46268 (US). — before the expiration of the time limit for amending the (74) Agent: ROSENFELD, Marcia; Dow AgroSciences LLC, claims and to be republished in the event of receipt of 9330 Zionsville Road, Indianapolis, IN 46268 (US). amendments (Rule 48.2(h)) (81) Designated States (unless otherwise indicated, for every — with sequence listing part of description (Rule 5.2(a)) kind of national protection available): AE, AG, AL, AM, (54) Title: THREAD NUCLEIC ACID MOLECULES THAT CONFER RESISTANCE TO HEMIPTERAN PESTS Figure 1. Generation of dsRNA from a single transcription template with a single pair of primers T7 NA polymerase dsRNA T7 (57) Abstract: This disclosure concerns nucleic acid molecules and methods of use thereof for control of hemipteran pests through RNA interference-mediated inhibition of target coding and transcribed non-coding sequences in hemipteran pests. The disclosure also concerns methods for making transgenic plants that express nucleic acid molecules useful for the control of hemipteran pests, and the plant cells and plants obtained thereby. THREAD NUCLEIC ACID MOLECULES THAT CONFER RESISTANCE TO HEMIPTERAN PESTS CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This Application claims priority from, and benefit of, U.S. Provisional Application 62/166,985 filed on May 27, 2015. The entire contents of this application is hereby incorporated by reference into this Application. REFERENCE TO SEQUENCE LISTING SUBMITTED ELECTRONICALLY [0002] The official copy of the sequence listing is submitted electronically via EFS- Web as an ASCII formatted sequence listing with a file named "75883-WO- PCT_20160523_Priority_Sequence_Listing_as_filed_20 150527", created on May 13, 2016, and having a size of 28 kilobytes, and is filed concurrently with the specification. The sequence listing contained in this ASCII formatted document is part of the specification, and is incorporated herein by reference in its entirety. TECHNICAL FIELD OF THE DISCLOSURE [0003] The present invention relates generally to genetic control of plant damage caused by hemipteran pests. In particular embodiments, the present invention relates to identification of target coding and non-coding sequences, and the use of recombinant DNA technologies for post-transcriptionally repressing or inhibiting expression of target coding and non-coding sequences in the cells of a hemipteran pest to provide a plant protective effect. BACKGROUND [0004] Stink bugs and other hemipteran: heteroptera insects comprise an important agricultural pest complex. Worldwide over 50 closely related species of stink bugs are known to cause crop damage. McPherson & McPherson, R.M. (2000) Stink bugs of economic importance in America north of Mexico CRC Press. These insects are present in a large number of important crops including maize, soybean, cotton, fruit, vegetables, and cereals. The Neotropical Brown Stink Bug, Euschistus hews, the Red-banded Stink Bug, Piezodorus guildinii, Brown Marmorated Stink Bug, Halyomorpha halys, and the Southern Green Stink Bug, Nezara viridula, are of particular concern. These pests cause millions of dollars in crop damage yearly in the U.S. alone. [0005] Stink bugs go through multiple nymph stages before reaching the adult stage. The time to develop from eggs to adults is about 30-40 days. Multiple generations occur in warm climates resulting in significant insect pressure. [0006] Both nymphs and adults feed on sap from soft tissues into which they also inject digestive enzymes causing extra-oral tissue digestion and necrosis. Digested plant material and nutrients are then ingested. Depletion of water and nutrients from the plant vascular system results in plant tissue damage. Damage to developing grain and seeds is the most significant as yield and germination are significantly reduced. [0007] Current management of hemipteran insects relies on insecticide treatment on an individual field basis. Therefore, alternative management strategies are urgently needed to minimize ongoing crop losses. [0008] RNA interference (RNAi) is a process utilizing endogenous cellular pathways, whereby an interfering RNA (iRNA) molecule (e.g., a dsRNA molecule) that is specific for all, or any portion of adequate size, of a target gene sequence results in the degradation of the mRNA encoded thereby. In recent years, RNAi has been used to perform gene "knockdown" in a number of species and experimental systems; for example, Caenorhabditis elegans, plants, insect embryos, and cells in tissue culture. See, e.g., Fire et al. (1998) Nature 391:806-811; Martinez et al. (2002) Cell 110:563-574; McManus and Sharp (2002) Nature Rev. Genetics 3:737-747. [0009] RNAi accomplishes degradation of mRNA through an endogenous pathway including the DICER protein complex. DICER cleaves long dsRNA molecules into short fragments of approximately 20 nucleotides, termed small interfering RNA (siRNA). The siRNA is unwound into two single-stranded RNAs: the passenger strand and the guide strand. The passenger strand is degraded, and the guide strand is incorporated into the RNA-induced silencing complex (RISC). Micro inhibitory ribonucleic acid (miRNA) molecules may be similarly incorporated into RISC. Post-transcriptional gene silencing occurs when the guide strand binds specifically to a complementary sequence of an mRNA molecule and induces cleavage by Argonaute, the catalytic component of the RISC complex. This process is known to spread systemically throughout the organism despite initially limited concentrations of siRNA and/or miRNA in some eukaryotes such as plants, nematodes, and some insects. [0010] Only transcripts complementary to the siRNA and/or miRNA are cleaved and degraded, and thus the knock-down of mRNA expression is sequence-specific. In plants, several functional groups of DICER genes exist. The gene silencing effect of RNAi persists for days and, under experimental conditions, can lead to a decline in abundance of the targeted transcript of 90% or more, with consequent reduction in levels of the corresponding protein. SUMMARY OF THE DISCLOSURE [0011] Disclosed herein are nucleic acid molecules (e.g., target genes, DNAs, dsRNAs, siRNAs, shRNA, miRNAs, and hpRNAs), and methods of use thereof, for the control of hemipteran pests, including, for example, Euschistus heros (Fabr.) (Neotropical Brown Stink Bug, "BSB"), Nezara viridula (L.) (Southern Green Stink Bug), Piezodorus guildinii (Westwood) (Red-banded Stink Bug), Halyomorpha halys (Stal) (Brown Marmorated Stink Bug), Chinavia hilare (Say) (Green Stink Bug), Euschistus servus (Say) (Brown Stink Bug), Dichelops melacanthus (Dallas), Dichelops furcatus (F.), Edessa meditabunda (F.), Thyanta perditor (F.) (Neotropical Red Shouldered Stink Bug), Chinavia marginatum (Palisot de Beauvois), Horcias nobilellus (Berg) (Cotton Bug), Taedia stigmosa (Berg), Dysdercus peruvianus (Guerin-Meneville), Neomegalotomus parvus (Westwood), Leptoglossus zonatus (Dallas), Niesthrea sidae (F.)» Lygus hesperus (Knight) (Western Tarnished Plant Bug), and Lygus lineolaris (Palisot de Beauvois). In particular examples, exemplary nucleic acid molecules are disclosed that may be homologous to at least a portion of one or more native nucleic acid sequences in a hemipteran pest. [0012] In these and further examples, the native nucleic acid sequence may be a target gene, the product of which may be, for example and without limitation: involved in a metabolic process; involved in a reproductive process; or involved in nymph development. In some examples, post-translational inhibition of the expression of a target gene by a nucleic acid molecule comprising a sequence homologous thereto may be lethal in hemipteran pests, or result in reduced growth and/or reproduction. In specific examples, a gene consisting of the inhibitor of apoptosis (IAP) family of proteins (referred to herein as thread) may be selected as a target gene for post-transcriptional silencing.

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