Plant-parasitic Nematodes Associated with Grasses Grown for Seed in the Willamette Valley of Oregon
Plant-parasitic nematodes (PPN) are an understudied pathogen group in the Oregon cool-season grass seed cropping system. In this survey, the PPN associated with annual ryegrass, bentgrass, fine fescue, orchardgrass, perennial ryegrass, and tall fescue were determined. Thirty-seven fields were sample...
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2024-05-01
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| Series: | Journal of Nematology |
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| Online Access: | https://doi.org/10.2478/jofnem-2024-0020 |
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| author | Rivedal H. M. Zasada I. A. Temple T. N. Peetz A. B. Núñez-Rodríguez L. A. Starchvick R. J. Braithwaite E. T. |
| author_facet | Rivedal H. M. Zasada I. A. Temple T. N. Peetz A. B. Núñez-Rodríguez L. A. Starchvick R. J. Braithwaite E. T. |
| author_sort | Rivedal H. M. |
| collection | DOAJ |
| description | Plant-parasitic nematodes (PPN) are an understudied pathogen group in the Oregon cool-season grass seed cropping system. In this survey, the PPN associated with annual ryegrass, bentgrass, fine fescue, orchardgrass, perennial ryegrass, and tall fescue were determined. Thirty-seven fields were sampled in the 2022 or 2023 growing season by collecting 10 soil cores in each of six 100-m transects for nematode extraction and visual identification. PerMANOVA testing indicated significant differences in PPN community composition across grass host and sampling time. Pratylenchus and Meloidogyne were the most commonly encountered nematodes, with maximum population densities of 1,984 and 2,496 nematodes/100 g soil, respectively. Sequencing of the COX1 gene region indicated the presence of P. crenatus, P. fallax, P. neglectus, P. penetrans, and P. thornei, with some of these species being detected for the first time on these grass hosts. The only Meloidogyne sp. found in these grasses was M. nassi, based upon sequencing of the ITS gene region. This first-of-its-kind survey indicates the need for further assessment of the impact of these PPNs on yield and stand longevity in cool-season grass seed fields in Oregon. |
| format | Article |
| id | doaj-art-bcdca91d949f408088c93d7e3adbac33 |
| institution | DOAJ |
| issn | 2640-396X |
| language | English |
| publishDate | 2024-05-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Journal of Nematology |
| spelling | doaj-art-bcdca91d949f408088c93d7e3adbac332025-08-20T02:49:46ZengSciendoJournal of Nematology2640-396X2024-05-0156137537810.2478/jofnem-2024-0020Plant-parasitic Nematodes Associated with Grasses Grown for Seed in the Willamette Valley of OregonRivedal H. M.0Zasada I. A.1Temple T. N.2Peetz A. B.3Núñez-Rodríguez L. A.4Starchvick R. J.5Braithwaite E. T.6USDA-ARS Forage Seed and Cereal Research Unit, 3450 SW Campus Way, Corvallis, OR97331USDA-ARS Horticultural Crops Disease and Pest Management Unit, 3420 Orchard Ave., Corvallis, OR97330USDA-ARS Forage Seed and Cereal Research Unit, 3450 SW Campus Way, Corvallis, OR97331USDA-ARS Horticultural Crops Disease and Pest Management Unit, 3420 Orchard Ave., Corvallis, OR97330Oregon State University, Department of Botany and Plant Pathology, 2072 Cordley Hall, Corvallis, OR97331Oregon State University, Department of Horticulture, 4017 Agriculture and Life Sciences Building, Corvallis, OR97331Oregon State University, Department of Horticulture, 4017 Agriculture and Life Sciences Building, Corvallis, OR97331Plant-parasitic nematodes (PPN) are an understudied pathogen group in the Oregon cool-season grass seed cropping system. In this survey, the PPN associated with annual ryegrass, bentgrass, fine fescue, orchardgrass, perennial ryegrass, and tall fescue were determined. Thirty-seven fields were sampled in the 2022 or 2023 growing season by collecting 10 soil cores in each of six 100-m transects for nematode extraction and visual identification. PerMANOVA testing indicated significant differences in PPN community composition across grass host and sampling time. Pratylenchus and Meloidogyne were the most commonly encountered nematodes, with maximum population densities of 1,984 and 2,496 nematodes/100 g soil, respectively. Sequencing of the COX1 gene region indicated the presence of P. crenatus, P. fallax, P. neglectus, P. penetrans, and P. thornei, with some of these species being detected for the first time on these grass hosts. The only Meloidogyne sp. found in these grasses was M. nassi, based upon sequencing of the ITS gene region. This first-of-its-kind survey indicates the need for further assessment of the impact of these PPNs on yield and stand longevity in cool-season grass seed fields in Oregon.https://doi.org/10.2478/jofnem-2024-0020grass for seedmeloidogynemolecular identificationoregonpratylenchussurvey |
| spellingShingle | Rivedal H. M. Zasada I. A. Temple T. N. Peetz A. B. Núñez-Rodríguez L. A. Starchvick R. J. Braithwaite E. T. Plant-parasitic Nematodes Associated with Grasses Grown for Seed in the Willamette Valley of Oregon Journal of Nematology grass for seed meloidogyne molecular identification oregon pratylenchus survey |
| title | Plant-parasitic Nematodes Associated with Grasses Grown for Seed in the Willamette Valley of Oregon |
| title_full | Plant-parasitic Nematodes Associated with Grasses Grown for Seed in the Willamette Valley of Oregon |
| title_fullStr | Plant-parasitic Nematodes Associated with Grasses Grown for Seed in the Willamette Valley of Oregon |
| title_full_unstemmed | Plant-parasitic Nematodes Associated with Grasses Grown for Seed in the Willamette Valley of Oregon |
| title_short | Plant-parasitic Nematodes Associated with Grasses Grown for Seed in the Willamette Valley of Oregon |
| title_sort | plant parasitic nematodes associated with grasses grown for seed in the willamette valley of oregon |
| topic | grass for seed meloidogyne molecular identification oregon pratylenchus survey |
| url | https://doi.org/10.2478/jofnem-2024-0020 |
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