Project's information
| Project's title | Survey and assessment of plant-parasitic nematodes on rice in the Red River Delta |
| Project’s code | UQĐTCB.07/24-25 |
| Research hosting institution | Institute of Biology |
| Project leader’s name | Assoc. Prof. Dr. Trinh Quang Phap |
| Project duration | 01/01/2024 - 30/06/2026 |
| Project’s budget | 1,200,000,000 VND |
| Classify | Grade B |
| Goal and objectives of the project | - To identify the species composition of plant-parasitic nematodes associated with rice and the major damaging species.
- To establish a dataset on nematode species harmful to rice and propose control measures. |
| Main results | - Theoretical results:
The project conducted surveys and collection of rice-associated plant-parasitic nematodes in major rice-growing areas of the Red River Delta across six provinces: Hai Phong, Hai Duong, Vinh Phuc, Ha Nam, Nam Dinh, and Thai Binh.
The species composition of rice plant-parasitic nematodes was described, and datasets on morphological, molecular characteristics and distribution maps were compiled to assess population dynamics. Two species new to science were recorded: Hirschmanniella namdinhensis sp. n. and Aphelenchoides vinhphucensis. In addition, three species were reported for the first time on rice in Vietnam (Pratylenchus parazeae, Hemicriconemoides phoenicis, Paratrichodorus minor).
The nematode community was dominated by two migratory endoparasitic species (Hirschmanniella oryzae, H. mucronata) and one sedentary endoparasitic species (Meloidogyne graminicola), which pose high risks of becoming major pests in most surveyed areas. The “ufra” disease caused by Ditylenchus angustus was not detected in the Red River Delta. Leaf white-tip disease and grain sterility caused by Aphelenchoides besseyi were found only in limited, localized sampling sites in Hai Phong and Vinh Phuc.
The ecological transition of rice cultivation from fully flooded soils to intermittently flooded systems has created favorable conditions for the adaptation and development of aerobic nematode groups harmful to rice.
Sustainable management measures were proposed based on cultivation practices, the use of bioproducts, and the ecological and biological characteristics of key nematode species.
- Applied results:
The dataset on major nematode pests of rice in the Red River Delta serves as an important reference for diagnosis and pest risk assessment in agricultural production and helps prevent nematode outbreaks. The proposed sustainable management solutions—based on cultivation techniques, biological products and ecological insights—are readily applicable in practice. |
| Novelty and actuality and scientific meaningfulness of the results | Discovery of two species new to science (Hirschmanniella namdinhensis sp. n. and Aphelenchoides vinhphucensis sp. n.) and three species newly recorded on rice in Vietnam (Pratylenchus parazeae, Hemicriconemoides phoenicis, Paratrichodorus minor). Development of a complete dataset on major harmful nematode species on rice in the Red River Delta, including pest risk assessment and ecological transitions of rice-infesting nematodes.
*** Products of the project:
- Scientific papers in referred journals (list):
Le, T. M. L., Nguyen, T. D., Nguyen, H. T., Nguyen, T. T. H., Do, K. L., & Trinh, Q. P. (2025). Morphological and molecular characterisations of Hirschmanniella mucronata associated with rice from Red River delta in Vietnam. Australasian Plant Pathology, 54(2), 81-96. (SCIE/Q3, IF 1.1)
Nguyen, T. H., Nguyen, D. T., Le, L. T. M., Le, A. H., & Trinh, P. Q. (2025). Occurrence of Hirschmanniella spp. in Vietnam, an updated species list of the genus and a browser-based interactive key for species identification. Australasian Plant Pathology, 1-9 (SCIE/Q3, IF 1.1)
Le, A. H., Le, L. T. M., Nguyen, D. T., Nguyen, T. H., & Trinh, P. Q. (2025). Morphological and molecular characterisations of Aphelenchoides vinhphucensis sp. n. associated with rice from Vietnam. Journal of Helminthology, 99, e117. (SCIE/Q2, IF 1.6)
Nguyen, T.D., Le, L. T. M., Nguyen, H. T., Le, A. H., Trinh, P. Q. (2025). First report of Pratylenchus parazeae (Nematoda: Pratylenchidae) associated with rice in Vietnam. Helminthogia 62, 1-9. (SCIE/Q3, IF 1.2)
Nguyen, D. T., Le, L. T. M., Nguyen, T. H., Le, A. H., & Trinh, P. Q.Molecular and morphological characterizazion of Helicotylenchus crenacauda isolated from paddy rice in The Red River Delta in Vietnam. Academia Journal of Biology.
 - Other products (if applicable): 18 DNA sequences of major rice nematode pests have been submitted to GenBank. Three other manuscripts have been completed and submitted to the Nematology, Biologia, and Vietnam Journal of Biotechnology (currently undergoing peer review). |
| Research area | Department of Crop Production and Plant Protection; Provincial Sub-Departments of Crop Production and Plant Protection; Provincial Agricultural Extension Centers. |
| Recommendations | Further pathological evaluation of newly recorded nematode species on rice in the Red River Delta. Assessment of economic thresholds for major nematode groups on rice to develop appropriate pest management strategies. Continued monitoring and investigation of nematode pests on rice in northern Vietnam to prevent their emergence and development under sustainable agriculture. |
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