• Identification and characterization of plant-parasitic nematode species affecting major crops in North Dakota

  Our research focuses on understanding the distribution patterns and population dynamics of economically important nematode species, particularly in soybean, corn, and sugar beet production systems.

• Host range studies and resistance screening

  Comprehensive evaluation of crop varieties and breeding lines for resistance to key nematode species, with emphasis on developing sustainable management strategies for growers.

• Nematode community analysis

  Investigation of soil food web interactions and the impact of agricultural practices on beneficial and plant-parasitic nematode populations in agricultural ecosystems.

• Integrated pest management strategies

  Development and evaluation of comprehensive management approaches combining cultural, biological, and chemical control methods for sustainable nematode control.

• Cover crop evaluation

  Assessment of various cover crop species for their potential to suppress plant-parasitic nematode populations while promoting soil health and beneficial organisms.

• Chemical control optimization

  Evaluation of nematicide efficacy and application timing to maximize control while minimizing environmental impact and production costs.

• DNA-based species identification

  Implementation of cutting-edge molecular techniques for rapid and accurate identification of plant-parasitic nematodes, enabling precise species-level diagnostics.

• Population genetics studies

  Analysis of genetic diversity and population structure of key nematode species to understand their adaptation and spread patterns in agricultural systems.

• Development of diagnostic tools

  Creation of species-specific molecular markers and quantitative PCR assays for efficient detection and quantification of plant-parasitic nematodes in soil samples.

• Yan, G. P. 2025. Stubby root nematodes, sting and awl Nematodes, in Compendium of Potato Diseases, Third Edition. American Phytopathological Society, APS Press, St. Paul, MN, U.S.A. (submitted).

• Bird, G. and Yan, G. P. 2024. Plant diseases caused by nematode-vectored viruses, in Nematode Disease Complexes in Agricultural Crops, CAB International, trading as CABI, editor Mujeebur Rahman Khan. (in press).

• Poudel, D. and Yan, G. P. 2024. Trichodorus and Paratrichodorus. Chapter 30, in Compendium of Phytopathogenic Microbes in Agro-ecology (vol III), Bacteria, Protozoa, Algae and Nematodes, Springer Nature Switzerland AG.

• Gossen, B. D., Kalil, A., Chapara, V., Karasev, A., Yan, G. P., Hwang, S.F., Chang, K.F., and Burlakoti, R. R. 2024. Diseases of Pea. In: Handbook of Vegetable and Herb Diseases. Handbook of Plant Disease Management. Springer, Cham.

• Owen, K., Walia, R. K., Yan, G. P., and Khan, M. R. 2023. Nematode problems in wheat and barley and their sustainable management, in Nematode Diseases of Crops and Their Sustainable Management, Elsevier Science & Technology, Academic Press Inc., Oxford, United Kingdom, pp. 97-131.

• Chowdhury, I. A., Yan, G. P., and Khan, M. 2022. Diseases caused by nematodes on the sugar beet, in Sugar Beet Cultivation, Management and Processing, Volume 1, Springer Nature Singapore Pte Ltd., pp. 737-750.

• Inglis, D. A., Riga, E., and Yan, G. P. 2021. Diseases caused by nematodes, Pages 61-66 in Compendium of Pea Diseases and Pests, third edition, APS Press, St. Paul, MN, U.S.A.

• Yan, G. P. and Baidoo, R. 2018. Plant-parasitic nematodes of North Dakota and South Dakota, in Plant Parasitic Nematodes in Sustainable Agriculture of North America, Volume 2: Northeastern, Midwestern and Southern USA, Springer Nature Switzerland AG, pp. 181-207.

• Marion, O. H., Jacob, J., Brown, P., and Yan, G. P. 2017. Wheat pests: introduction, rodents and nematodes, in Achieving sustainable cultivation of wheat Volume 1: Breeding, quality traits, pests and diseases, Burleigh Dodds Science Publishing, Cambridge, UK, pp. 443-466.

2025

• Lawaju, B. R. and Yan, G. P. Enhancing PCR assay sensitivity for detecting Tobacco rattle virus in vector stubby root nematode (Paratrichodorus allius). Journal of Nematology (internal review).

• Ranabhat, S. and Yan, G. P. Development of a real-time PCR assay for direct detection and quantification of the new root-lesion nematode species Pratylenchus dakotaensis from soybean roots. PhytoFrontiers (internal review).

• Dhakal, R., Plaisance, A., Markell, S. G., and Yan, G. P. Identification of suppressive soil against soybean cyst nematode (Heterodera glycines) in North Dakota. Nematology (internal review).

• Dhakal, R., Yan, G. P., and Kandel, S. L. Characterization of fungal communities in the soil suppressive to soybean cyst nematode (Heterodera glycines) in soybean fields of North Dakota. Phytobiomes Journal (internal review).

• Ojha, E., Singh, G., Plaisance, A., and Yan, G. P. Evaluation of field pea cultivars for resistance to pin nematode (Paratylenchus nanus type B) in North Dakota. Plant Disease (submitted).

2024

• Poudel, D., Yan, G. P., Miranda, C., Kreutz, G. F., and Chowdhury, I. A. Copy number variations at the Rhg1 locus and their relationship with resistance to soybean cyst nematode (Heterodera glycines). Frontiers in Plant Science 15:1504932.

• Dhakal, R., Chowdhury, I. A., Plaisance, A., and Yan, G. P. Development of a recombinase polymerase amplification assay for rapid detection of the new root-lesion nematode Pratylenchus dakotaensis on soybean. Plant Disease (First Look).

• Goraya, M. and Yan, G. P. Rapid and direct detection of the stubby root nematode, Paratrichodorus allius from soil DNA extracts using recombinase polymerase amplification assay. International Journal of Molecular Sciences 25:10371.

• Lawaju, B. R. and Yan, G. P. Assessment of common factors associated with droplet digital PCR (ddPCR) quantification of Paratrichodorus allius in soil. International Journal of Molecular Sciences 25:3104.

• Goraya, M., Yan, G. P., Whitworth, J., and Grimm, K. S. Advancing nematode identification on potato: an isothermal recombinase polymerase amplification assay for stubby root nematode, Paratrichodorus allius. American Journal of Potato Research 101: 52-64.

2023

• Kaur, H., Osorno, J. M., and Yan, G. P. Screening dry edible bean germplasm for resistance to soybean cyst nematode (Heterodera glycines). Bean Improvement Cooperative (BIC) and North American Pulse Improvement Association (NAPIA) Biennial Meeting, Greenville, SC November 5-9, 2023.

• Yan, G. P., Poudel, D., Nelson, B., Ebert, M., Mathew, F., Markell, S., and Webster, R. First detection of the fungal species Clonostachys rosea from infected soybean plants in North Dakota. American Phytopathological Society Annual Meeting, Denver, Colorado, August 12-16, 2023.

• Poudel, D. and Yan, G. P. Evaluation of soybean accessions with soybean cyst nematode resistance for resistance to the fungus Clonostachys rosea. American Phytopathological Society Annual Meeting, Denver, Colorado, August 12-16, 2023.

• Lawaju, B. R. and Yan, G. P. Quantitative detection of Paratrichodorus allius in soil by droplet digital polymerase chain reaction (ddPCR). American Phytopathological Society Annual Meeting, Denver, Colorado, August 12-16, 2023.

• Yan, G. P., and Neupane, K. Hosting and population reduction abilities of cover crops to the root-lesion nematode Pratylenchus penetrans associated with potato. 107th Annual Meeting of the Potato Association of America, Charlottetown, Prince Edward Island, Canada, July 23-27, 2023.

• Yan, G. P., Lawaju, B. R., Pasche, J., Whitworth, J., and Grimm, K. S. Detection of Tobacco rattle virus in viruliferous stubby root nematodes (Paratrichodorus allius) using reverse transcription PCR. 107th Annual Meeting of the Potato Association of America, Charlottetown, Prince Edward Island, Canada, July 23-27, 2023.

• Goraya, M., Yan, G. P., and Handoo, Z. A. Identification and reproduction of dagger nematode (Xiphinema americanum) in potato. 107th Annual Meeting of the Potato Association of America, Charlottetown, Prince Edward Island, Canada, July 23-27, 2023.

• Goraya, M. and Yan, G. P. Development of a recombinase polymerase amplification assay for rapid detection of the stubby root nematode, Paratrichodorus allius in potato fields. 107th Annual Meeting of the Potato Association of America, Charlottetown, Prince Edward Island, Canada, July 23-27, 2023.

• Yan, G. P. and Arora, D. First draft genome assembly of the root-lesion nematode Pratylenchus scribneri generated using long-read sequencing. 62th Annual Meeting of the Society of Nematologists, Columbus, Ohio, July 9-14, 2023.

• Dhakal, R., Plaisance, A., and Yan, G. P. Assessment of soybean cyst nematode suppressive soil from soybean fields in North Dakota. 62th Annual Meeting of the Society of Nematologists, Columbus, Ohio, July 9-14, 2023.

• John, M., Plaisance, A., and Yan, G. P. Root penetration and reproductive abilities of root-lesion nematode, pratylenchus penetrans in cover crops. 62th Annual Meeting of the Society of Nematologists, Columbus, Ohio, July 9-14, 2023.

• Paudel, S., Yan, G. P., and Neupane, K. Developing a real-time PCR for rapid detection and identification of the pin nematode Paratylenchus nanus type B. American Phytopathological Society North Central Meeting, West Lafayette, Indiana, June 20-22, 2023.

• Poudyal, P., Yan, G. P., and Osorno, M. Exploring host resistance in dry edible bean to a new virulent population of soybean cyst nematode (Heterodera glycines) in North Dakota. American Phytopathological Society North Central Meeting, West Lafayette, Indiana, June 20-22, 2023.

• Ranabhat, S., Yan, G. P., Plaisance, A., and Dhakal, R. Resistance of soybean varieties to Pratylenchus dakotaensis, a new root-lesion nematode species infecting soybean. American Phytopathological Society North Central Meeting, West Lafayette, Indiana, June 20-22, 2023.

• Kaur, H. and Yan, G. P. Reproduction of soybean cyst nematode on commercial cultivars and breeding lines of dry edible bean. North Dakota State University Student Research Day, Fargo, ND, April 18, 2023.

• Goraya, M. and Yan, G. P. Developing a recombinase polymerase amplification assay for detection of stubby root nematode (Paratrichodorus allius) on potato. North Dakota State University Student Research Day, Fargo, ND, April 18, 2023.

• Poudel, D. and Yan, G. P. Screening of soybean cultivars and breeding lines for resistance to soybean cyst nematode (Heterodera glycines). The 3rd Annual NDSU Soybean Symposium, Fargo, ND, March 31, 2023.

2022

• Yan, G. P. Pratylenchus dakotaensis, a recently named root-lesion nematode species from soybean fields in North Dakota. National Soybean Nematode Conference, Savannah, Georgia, December 14-16?, 2022.

• Yan, G. P. Recent advancements in molecular detection and quantification of soybean cyst and root-lesion nematodes. National Soybean Nematode Conference, Savannah, Georgia, December 14-16?, 2022.

• Dhakal, R., Chowdhury, I., Plaisance, A., and Yan, G. P. Developing a recombinase polymerase amplification assay for rapid detection of the new root-lesion nematode, Pratylenchus dakotaensis on soybean. National Soybean Nematode Conference, Savannah, Georgia, December 14-16?, 2022.

• Neupane, K., Yan, G. P., and Plaisance, A. Evaluation of cover crops for their effects on hatching and root penetration of soybean cyst nematode. National Soybean Nematode Conference, Savannah, Georgia, December 14-16?, 2022.

• Goraya, M. and Yan, G. P. Development of a recombinase polymerase amplification assay for rapid detection of the stubby root nematode, Paratrichodorus allius. Pages 63-64 in Program & Abstracts of 61th Annual Meeting of the Society of Nematologists, Anchorage, Alaska, September 26-30, 2022.

• Poudel, D. and Yan, G. P. Assessment of breeding lines for resistance to soybean cyst nematode (Heterodera glycines) and their copy number variation at Rhg1 locus. Pages 89-90 in Program & Abstracts of 61th Annual Meeting of the Society of Nematologists, Anchorage, Alaska, September 26-30, 2022.

• Neupane, K. and Yan, G. P. Hosting and population reduction abilities of cover crops to the root-lesion nematode Pratylenchus penetrans. American Phytopathological Society Annual Meeting, Pittsburgh, PA, August 6-10, 2022.

• Dhakal, R., Plaisance, A., and Yan, G. P. Assessment of soybean fields for soil suppressiveness against soybean cyst nematode (Heterodera glycines). American Phytopathological Society North Central Division Meeting, Lincoln, Nebraska, June 21-23, 2022.

• John, M., Neupane, K., and Yan, G. P. Evaluation of cover crops for their hosting and population reduction abilities to the root-lesion nematode, Pratylenchus penetrans associated with potato. American Phytopathological Society North Central Division Meeting, Lincoln, Nebraska, June 21-23, 2022.

• Kaur, H., Osorno, J. M., and Yan, G. P. Reproduction of soybean cyst nematode (Heterodera glycines) on commercial cultivars of dry edible bean. American Phytopathological Society North Central Division Meeting, Lincoln, Nebraska, June 21-23, 2022.

• Neupane, K. and Yan, G. P. Impact of cover crops on hatching, penetration and development of soybean cyst nematode, Heterodera glycines. The 2nd Annual NDSU Soybean Symposium, Fargo, ND, March 17, 2022.

• Yan, G. P. Developing a droplet digital PCR assay for detection of the stubby root nematode Paratrichodorus allius. 7th International Congress of Nematology, Antibes Juan-les-Pins, France, May 1-6, 2022.

• Singh, G., Liu, Z., Faris, J. D., and Yan, G. P. Identification of quantitative trait loci for resistance to Pratylenchus neglectus in triticale. 7th International Congress of Nematology, Antibes Juan-les-Pins, France, May 1-6, 2022.

2021

• Baidoo, R. and Yan, G. P. Developing a real-time PCR assay for direct identification and quantification of soybean cyst nematode, Heterodera glycines, in soil and its discrimination from sugar beet cyst nematode, Heterodera schachtii. Plant Disease 105: 3848-3857.

• Chowdhury, I. A., Yan, G. P., Plaisance, A., and Markell, S. Characterization of virulence phenotypes of soybean cyst nematode (Heterodera glycines) populations in North Dakota. Phytopathology 111: 2100-2109.

• Chowdhury, I. A. and Yan, G. P. Development of real-time and conventional PCR assays for identifying a newly named species of root-lesion nematode (Pratylenchus dakotaensis) on soybean. International Journal of Molecular Sciences 22(11), 5872.

• Acharya, K., Yan, G. P., and Plaisance, A. Effects of cover crops on population reduction of soybean cyst nematode, Heterodera glycines. Plant Disease 105: 764-769.

• Handoo, Z. A., Yan, G. P., Kantor, M. R., Huang, D., Chowdhury, I. A., Plaisance, A., Bauchan, G. R., and Mowery, J. D. Morphological and molecular characterization of Pratylenchus dakotiensis n. sp. (Nematoda: Pratylenchidae), a new root-lesion nematode species on soybean in North Dakota, USA. Plants 10: 168.

• KC, A., Yan, G. P., Acharya, K., Plaisance, A., and Khan, M. F. R. Occurrence of plant-parasitic nematodes in sugarbeet fields of North Dakota and Minnesota. Crop Protection 142: 105503.

• Subbotin, S. A., Yan, G. P., Kantor, M., and Handoo, Z. On the molecular identity of Paratylenchus nanus Cobb, 1923 (Nematoda: Tylenchida). Journal of Nematology 52: 1-7.

2020

• Acharya, K., *Yan, G. P., and Berti, M. T. Evaluation of diverse cover crops as hosts of two populations of soybean cyst nematode, Heterodera glycines. Crop Protection 135: 105205.

• Upadhaya, A., *Yan, G. P., Secor, G., and Robinson, A. Effects of co-inoculation with Pratylenchus penetrans and Fusarium oxysporum on growth and yield of potato cultivar Red Norland. American Journal of Potato Research 97: 246-255.

• Arora, D., *Yan, G. P., and Baidoo, R. Developing a real-time PCR assay for direct detection and quantification of Pratylenchus scribneri in field soil. Nematology 22:733-744.

2019

• Chowdhury, I. A. *Yan, G. P. and Friskop, A. Occurrence of vermiform plant-parasitic nematodes in North Dakota corn fields and impact of environmental and soil factors. Canadian Journal of Plant Pathology 42:429-444.

• Acharya, K., *Yan, G. P., and Berti, M. Can winter camelina, crambe, and brown mustard reduce soybean cyst nematode populations? Industrial Crops and Products 140: 111637.

• Huang, D., *Yan, G. P., Gudmestad, N., and Whitworth, J. Assessment of factors associated with molecular quantification of stubby root nematode Paratrichodorus allius from field soil DNA. Plant Disease 103: 3265-3273.

• Upadhaya, A., *Yan, G. P., and Pasche, J. Reproduction ability and growth effect of pin nematode, Paratylenchus nanus, with selected field pea cultivars. Plant Disease 103: 2520-2526.

• Huang, D., *Yan, G. P., Gudmestad, N., Ye, W., Whitworth, J., Frost, K., Crow, W., and Hajihassani, A. Developing a one-step multiplex PCR assay for rapid detection of four stubby-root nematode species Paratrichodorus allius, P. minor, P. pororus and Trichorodorus obtusus. Plant Disease 103: 404-410.

• Upadhaya, A., *Yan, G. P., Pasche, J., and Kalil, A. Occurrence and distribution of vermiform plant-parasitic nematodes and the relationship with soil factors in field pea (Pisum sativum) in North Dakota, USA. Nematology 21: 445-457.

2018

• *Yan, G. P., Plaisance, A., Huang, D., Baidoo, R., Ransom, J. K., and Handoo, Z. A. First report of the ring nematode Mesocriconema nebraskense from a corn field in North Dakota. Journal of Nematology 50: 531-532.

• *Yan, G. P. and Baidoo, R. Current research status of Heterodera glycines resistance and its implication on soybean breeding. Engineering 4: 534-541.

• Huang, D., *Yan, G. P., Gudmestad, N., Whitworth, J., Frost, K., Brown, C., Weimin, Y., Agudelo, P., and Crow, W. Molecular characterization and identification of stubby root nematode species from multiple states in the United States. Plant Disease 102: 2101-2111.

• *Yan, G. P., Plaisance, A., Huang, D., and Handoo, Z. A. First report of a new stunt nematode Tylenchorhynchus sp. from a soybean field in North Dakota. Plant Disease 102: 453.

2017

• Baidoo, R., *Yan, G. P., Nagachandrabose, S., and Skantar, A. M. Developing a real-time PCR assay for direct identification and quantification of Pratylenchus penetrans in soil. Plant Disease 101: 1432-1441.

• *Yan, G. P., Plaisance, A., Huang, D., and Handoo, Z. A. First report of the spiral nematode Helicotylenchus microlobus infecting soybean in North Dakota. Journal of Nematology 49: 1.

• *Yan, G. P., Plaisance, A., Huang, D., Handoo, Z. A., and Chitwood, D. J. First report of a new, unnamed lesion nematode Pratylenchus sp. infecting soybean in North Dakota. Plant Disease 101: 1555.

• Huang, D., *Yan, G. P., Gudmestad, N., and Skantar, A. Quantification of Paratrichodorus allius in DNA extracted from soil using TaqMan Probe and SYBR Green real-time PCR assays. Nematology 19: 987-1001.

• Baidoo, R., *Yan, G. P., Nelson, B., Skantar, A. M., and Chen, S. Use of chemical flocculation and nested PCR for Heterodera glycines detection in DNA extracts from field soils with low population densities. Plant Disease 101: 1153-1161.

• Huang, D., *Yan, G. P., and Skantar, A. M. Development of real-time and conventional PCR assays for identifying stubby root nematode Paratrichodorus allius. Plant Disease 101: 964-972.

• *Yan, G. P., Plaisance, A., Chowdhury, I., Baidoo, R., Upadhaya, A., Pasche, J., Markell, S., Nelson, B., and Chen, S. First report of the soybean cyst nematode Heterodera glycines infecting dry bean (Phaseolus vulgaris L.) in a commercial field in Minnesota. Plant Disease 101: 391.

• Huang, D., and *Yan, G. P. Specific detection of the root-lesion nematode Pratylenchus scribneri using conventional and real-time PCR. Plant Disease 101: 359-365.

2016

• *Yan, G. P., Plaisance, A., Huang, D., and Handoo, Z. A. First report of the lance nematode Hoplolaimus stephanus from a soybean field in North Dakota. Plant Disease 100: 2536.

• *Yan, G. P., Plaisance, A., Huang, D., Liu, Z., Chapara, V., and Handoo, Z. A. First report of the root-lesion nematode Pratylenchus neglectus on wheat (Triticum aestivum) in North Dakota. Plant Disease 100: 1794.

• *Yan, G. P., Plaisance, A., Huang, D., Upadhaya, A., Gudmestad, N. C., and Handoo, Z. A. First report of the stubby root nematode Paratrichodorus allius on potato in North Dakota. Plant Disease 100: 1247.

• *Yan, G. P., Plaisance, A., Huang, D., Gudmestad, N. C., and Handoo, Z. A. First report of the root-lesion nematode Pratylenchus scribneri infecting potato in North Dakota. Plant Disease 100: 1023.

• *Yan, G. P., Khan, M., Huang, D., Lai, X., and Handoo, Z. A. First report of the stubby root nematode Paratrichodorus allius on sugar beet in Minnesota. Plant Disease 100: 1022.

2015

• Smiley, R. W. and Yan, G. P. Discovery of Heterodera filipjevi in Washington and comparative virulence with H. avenae on wheat. Plant Disease 99: 376-386.

• Yan, G. P. (2023). Revising EPPO Global Datasheet: Heterodera glycines. Invited by European and Mediterranean Plant Protection Organization (EPPO/OEPP), PARIS, FRANCE. https://gd.eppo.int/taxon/HETDGL/datasheet.

• Berti, M. T., Yan, G. P., Samarappuli, D., Peterson, A., Wittenberg, A., and Anderson, J. V. (2019). Potential benefits to the environment by integrating winter camelina in current cropping systems of the northern Great Plains of the USA. 5 pages. 27th European Biomass Conference & Exhibition, Lisbon, Portugal, May 27-30, 2019.

• Smiley, R.W. and Yan, G. P. (2015). Molecular diagnostics aid in detecting and managing cereal nematodes in the USA. p. 369-379. In: A.A. Dababat, H. Muminjanov and R.W. Smiley (eds.). Nematodes of Small Grain Cereals: Current Status and Research. FAO, Rome, Italy. The Proceedings of the 5th International Cereal Nematodes Initiative Workshop.

• Yan, G.P., and R.W. Smiley. (2009). Discovery of Heterodera filipjevi on wheat in the USA. p. 94-99 in Cereal Cyst Nematodes: Status, Research and Outlook. I.T. Riley, J.M. Nicol, and A.A. Dababat (eds.). CIMMYT, Ankara, Turkey.

2025

• Plaisance, A., Yan, G. P., Pasche, Thompson, J. A., Peterson, D., and Benz, R. Responses of potato cultivars to plant-parasitic nematodes in North Dakota and Minnesota. NDSU All Ag Conference, November 4-7, 2024, Fargo, ND.

• Poudel, D. and Yan, G. P. Development of real-time quantitative PCR assay for direct and rapid detection of Pratylenchus penetrans in potato roots. NDSU All Ag Conference, November 5-7, 2024, Fargo, ND.

• Mumia, B., Yan, G. P., Pasche, J., and Plaisance, A. Interactions of root-lesion nematode (Pratylenchus scribneri) and fungal pathogen (Verticillium dahliae) in the potato early die complex. NDSU All Ag Conference, November 4-7, 2024, Fargo, ND.

2024

• Yan, G. P. Pratylenchus dakotaensis, a new root-lesion nematode species from soybean fields in the USA. 4th Annual Congress on Plant Science and Biosecurity, September 19-20, 2024, Barcelona, Spain (hybrid event).

• Dhakal, R., Yan, G. P., and Kandel, S. Identification and characterization of suppressive soil microbiome against soybean cyst nematode (Heterodera glycines) in North Dakota. American Phytopathological Society Annual Meeting, Memphis, Tennessee, July 27-30, 2024.

• Dhakal, R., Chowdhury, I. A., Plaisance, A., and Yan, G. P. Development of a recombinase polymerase amplification assay for rapid detection of the new root-lesion nematode Pratylenchus dakotaensis on soybean. American Phytopathological Society Annual Meeting, Memphis, Tennessee, July 27-30, 2024.

• Yan, G. P. and Lawaju, B. Developing a reverse transcription-quantitative polymerase chain reaction (RT-qPCR) assay for detection of Tobacco rattle virus in vector stubby root nematodes. Journal of Nematology, e2024-1 | Vol. 56 | Page 165, DOI: 10.2478/jofnem-2024-0036.

• Poudyal, P., Yan, G. P., Osorno, J. M., and Kaur, H. Unraveling host resistance in dry edible beans against virulent populations of soybean cyst nematode (Heterodera glycines) in North Dakota. Journal of Nematology, e2024-1 | Vol. 56 | Page 118, DOI: 10.2478/jofnem-2024-0036.

• Ranabhat, S., Plaisance, A., and Yan, G. P. Developing a real-time PCR assay for direct detection and quantification of the new root-lesion nematode, Pratylenchus dakotaensis from soybean plant roots. Journal of Nematology, e2024-1 | Vol. 56 | Page 123, DOI: 10.2478/jofnem-2024-0036.

• Mumia, B., Yan, G. P., and Pasche, J. Exploring interactions of root-lesion nematode (Pratylenchus scribneri) and fungal pathogen (Verticillium dahliae) in the potato early die complex. American Phytopathological Society North Central Meeting, Manhattan, Kansas, June 10-12, 2024.

• Paudel, S. and Yan, G. P. Validation of the real-time PCR assay for rapid detection and identification of the pin nematode, Paratylenchus nanus type B. American Phytopathological Society North Central Meeting, Manhattan, Kansas, June 10-12, 2024.

• Poudel, D., Yan, G. P., Miranda, C., and Kreutz, G.F. Copy number variations at the Rhg1 locus and their relationship with resistance to soybean cyst nematode (Heterodera glycines). American Phytopathological Society North Central Meeting, Manhattan, Kansas, June 10-12, 2024.

• Dhakal, R., Yan, G. P., Malick, B., and Kandel, S. Characterization of fungal and bacterial communities in suppressive soils against soybean cyst nematode in North Dakota. 4th Annual NDSU Soybean Symposium, Fargo, ND, March 27, 2024.

2023

• Kaur, H., Osorno, J. M., and Yan, G. P. Screening dry edible bean germplasm for resistance to soybean cyst nematode (Heterodera glycines). Bean Improvement Cooperative (BIC) and North American Pulse Improvement Association (NAPIA) Biennial Meeting, Greenville, SC November 5-9, 2023.

• Yan, G. P., Poudel, D., Nelson, B., Ebert, M., Mathew, F., Markell, S., and Webster, R. First detection of the fungal species Clonostachys rosea from infected soybean plants in North Dakota. American Phytopathological Society Annual Meeting, Denver, Colorado, August 12-16, 2023.

• Poudel, D. and Yan, G. P. Evaluation of soybean accessions with soybean cyst nematode resistance for resistance to the fungus Clonostachys rosea. American Phytopathological Society Annual Meeting, Denver, Colorado, August 12-16, 2023.

• Lawaju, B. R. and Yan, G. P. Quantitative detection of Paratrichodorus allius in soil by droplet digital polymerase chain reaction (ddPCR). American Phytopathological Society Annual Meeting, Denver, Colorado, August 12-16, 2023.

• Yan, G. P., and Neupane, K. Hosting and population reduction abilities of cover crops to the root-lesion nematode Pratylenchus penetrans associated with potato. 107th Annual Meeting of the Potato Association of America, Charlottetown, Prince Edward Island, Canada, July 23-27, 2023.

• Yan, G. P., Lawaju, B. R., Pasche, J., Whitworth, J., and Grimm, K. S. Detection of Tobacco rattle virus in viruliferous stubby root nematodes (Paratrichodorus allius) using reverse transcription PCR. 107th Annual Meeting of the Potato Association of America, Charlottetown, Prince Edward Island, Canada, July 23-27, 2023.

• Goraya, M., Yan, G. P., and Handoo, Z. A. Identification and reproduction of dagger nematode (Xiphinema americanum) in potato. 107th Annual Meeting of the Potato Association of America, Charlottetown, Prince Edward Island, Canada, July 23-27, 2023.

• Goraya, M. and Yan, G. P. Development of a recombinase polymerase amplification assay for rapid detection of the stubby root nematode, Paratrichodorus allius in potato fields. 107th Annual Meeting of the Potato Association of America, Charlottetown, Prince Edward Island, Canada, July 23-27, 2023.

• Yan, G. P. and Arora, D. First draft genome assembly of the root-lesion nematode Pratylenchus scribneri generated using long-read sequencing. 62th Annual Meeting of the Society of Nematologists, Columbus, Ohio, July 9-14, 2023.

• Dhakal, R., Plaisance, A., and Yan, G. P. Assessment of soybean cyst nematode suppressive soil from soybean fields in North Dakota. 62th Annual Meeting of the Society of Nematologists, Columbus, Ohio, July 9-14, 2023.

• John, M., Plaisance, A., and Yan, G. P. Root penetration and reproductive abilities of root-lesion nematode, pratylenchus penetrans in cover crops. 62th Annual Meeting of the Society of Nematologists, Columbus, Ohio, July 9-14, 2023.

• Paudel, S., Yan, G. P., and Neupane, K. Developing a real-time PCR for rapid detection and identification of the pin nematode Paratylenchus nanus type B. American Phytopathological Society North Central Meeting, West Lafayette, Indiana, June 20-22, 2023.

• Poudyal, P., Yan, G. P., and Osorno, M. Exploring host resistance in dry edible bean to a new virulent population of soybean cyst nematode (Heterodera glycines) in North Dakota. American Phytopathological Society North Central Meeting, West Lafayette, Indiana, June 20-22, 2023.

• Ranabhat, S., Yan, G. P., Plaisance, A., and Dhakal, R. Resistance of soybean varieties to Pratylenchus dakotaensis, a new root-lesion nematode species infecting soybean. American Phytopathological Society North Central Meeting, West Lafayette, Indiana, June 20-22, 2023.

• Kaur, H. and Yan, G. P. Reproduction of soybean cyst nematode on commercial cultivars and breeding lines of dry edible bean. North Dakota State University Student Research Day, Fargo, ND, April 18, 2023.

• Goraya, M. and Yan, G. P. Developing a recombinase polymerase amplification assay for detection of stubby root nematode (Paratrichodorus allius) on potato. North Dakota State University Student Research Day, Fargo, ND, April 18, 2023.

• Poudel, D. and Yan, G. P. Screening of soybean cultivars and breeding lines for resistance to soybean cyst nematode (Heterodera glycines). The 3rd Annual NDSU Soybean Symposium, Fargo, ND, March 31, 2023.

2022

• Yan, G. P. Pratylenchus dakotaensis, a recently named root-lesion nematode species from soybean fields in North Dakota. National Soybean Nematode Conference, Savannah, Georgia, December 14-16?, 2022.

• Yan, G. P. Recent advancements in molecular detection and quantification of soybean cyst and root-lesion nematodes. National Soybean Nematode Conference, Savannah, Georgia, December 14-16?, 2022.

• Dhakal, R., Chowdhury, I., Plaisance, A., and Yan, G. P. Developing a recombinase polymerase amplification assay for rapid detection of the new root-lesion nematode, Pratylenchus dakotaensis on soybean. National Soybean Nematode Conference, Savannah, Georgia, December 14-16?, 2022.

• Neupane, K., Yan, G. P., and Plaisance, A. Evaluation of cover crops for their effects on hatching and root penetration of soybean cyst nematode. National Soybean Nematode Conference, Savannah, Georgia, December 14-16?, 2022.

• Goraya, M. and Yan, G. P. Development of a recombinase polymerase amplification assay for rapid detection of the stubby root nematode, Paratrichodorus allius. Pages 63-64 in Program & Abstracts of 61th Annual Meeting of the Society of Nematologists, Anchorage, Alaska, September 26-30, 2022.

• Poudel, D. and Yan, G. P. Assessment of breeding lines for resistance to soybean cyst nematode (Heterodera glycines) and their copy number variation at Rhg1 locus. Pages 89-90 in Program & Abstracts of 61th Annual Meeting of the Society of Nematologists, Anchorage, Alaska, September 26-30, 2022.

• Neupane, K. and Yan, G. P. Hosting and population reduction abilities of cover crops to the root-lesion nematode Pratylenchus penetrans. American Phytopathological Society Annual Meeting, Pittsburgh, PA, August 6-10, 2022.

• Dhakal, R., Plaisance, A., and Yan, G. P. Assessment of soybean fields for soil suppressiveness against soybean cyst nematode (Heterodera glycines). American Phytopathological Society North Central Division Meeting, Lincoln, Nebraska, June 21-23, 2022.

• John, M., Neupane, K., and Yan, G. P. Evaluation of cover crops for their hosting and population reduction abilities to the root-lesion nematode, Pratylenchus penetrans associated with potato. American Phytopathological Society North Central Division Meeting, Lincoln, Nebraska, June 21-23, 2022.

• Kaur, H., Osorno, J. M., and Yan, G. P. Reproduction of soybean cyst nematode (Heterodera glycines) on commercial cultivars of dry edible bean. American Phytopathological Society North Central Division Meeting, Lincoln, Nebraska, June 21-23, 2022.

• Neupane, K. and Yan, G. P. Impact of cover crops on hatching, penetration and development of soybean cyst nematode, Heterodera glycines. The 2nd Annual NDSU Soybean Symposium, Fargo, ND, March 17, 2022.

• Yan, G. P. Developing a droplet digital PCR assay for detection of the stubby root nematode Paratrichodorus allius. 7th International Congress of Nematology, Antibes Juan-les-Pins, France, May 1-6, 2022.

• Singh, G., Liu, Z., Faris, J. D., and Yan, G. P. Identification of quantitative trait loci for resistance to Pratylenchus neglectus in triticale. 7th International Congress of Nematology, Antibes Juan-les-Pins, France, May 1-6, 2022.

• USDA-NIFA-SCRI

  Multi-institutional project focusing on developing integrated management strategies for emerging nematode threats in specialty crops. Current funding: $2.1M (2023-2027)

• USDA-NIFA-AFRI

  Research initiative on novel biocontrol approaches for sustainable nematode management in organic farming systems. Award: $750K (2024-2027)

• USDA-ARS

  Collaborative research program on climate-resilient nematode management strategies for northern plains agriculture. Ongoing support: $450K (2022-2025)

• United Soybean Board

  Supporting research on novel resistance sources against soybean cyst nematode and the development of management recommendations. Annual funding: $175K

• North Central Soybean Research Program

  Regional initiative to address emerging nematode challenges in soybean production systems. Multi-year project: $225K (2023-2026)

• ND Soybean Council

  Funding for applied research on nematode management strategies specific to North Dakota growing conditions. Current support: $80K annually

• ND Corn Council

  Investigation of corn nematode population dynamics and development of management guidelines for North Dakota producers. Project value: $65K/year

• State Board of Agricultural Research and Education (SBARE)

  Long-term support for nematode monitoring and management research in North Dakota cropping systems. Biennial funding: $320K

• Minnesota Department of Agriculture

  Cross-border collaboration on nematode surveillance and management strategies for shared agricultural zones. Grant: $150K (2024-2026)

• ND Department of Agriculture

  Specialty crop block grant for nematode management in high-value crops. Current funding: $95K (2023-2025)