Research Project: Development of Knowledge-based Approaches for Disease Management in Small Fruit and Nursery Crops

Location: Horticultural Crops Disease and Pest Management Research Unit

Publications (Clicking on the reprint icon will take you to the publication reprint.)

Reproduction and invasion dynamics of Globodera pallida and Meloidogyne spp. in Solanum Sisymbriifolium - (Peer Reviewed Journal)
Baker, H.V., Zasada, I.A., Gleason, C., Dandurand, L. 2023. Reproduction and invasion dynamics of Globodera pallida and Meloidogyne spp. in Solanum Sisymbriifolium. Nematropica. 53:70-81.

Evidence that an unnamed isometric virus associated with potato rugose disease in Peru Is a new species of genus Torradovirus - (Peer Reviewed Journal)
Alvarez-Quinto, R., Amao, M., Muller, G., Fuentes, S., Grinstead, S.C., Fuentes-Bueno, I., Roenhorst, A., Westenberg, M., Botermans, M., Kreuze, J., Mollov, D.S. 2023. Evidence that an unnamed isometric virus associated with potato rugose disease in Peru Is a new species of genus Torradoviru. Phytopathology. 113(9):1943-7684. https://doi.org/10.1094/PHYTO-11-22-0449-V.

First report of tobacco rattle virus infecting Weigela florida in the USA - (Peer Reviewed Journal)
Saldago Serrano, J., Alvarez-Quinto, R., Bauman, M., Arenz, B., Lockhart, B., Mollov, D.S. 2023. First report of tobacco rattle virus infecting Weigela florida in the USA. Plant Disease. https://doi.org/10.1094/PDIS-02-23-0351-PDN.

Genetic Diversity, Evolution, and Diagnosis of Sugarcane Yellow Leaf Virus from 19 Sugarcane-Producing Locations - (Peer Reviewed Journal)
Rott, P., Grinstead, S.C., Dallot, S., Foster, Z.S., Daugrois, J., Fernandez, E., Kaye, C., Hendrickson, L., Hu, X., Adhikari, B.N., Malapi-Wight, M., Grunwald, N.J., Roumagnac, P., Mollov, D.S. 2023. Genetic Diversity, Evolution, and Diagnosis of Sugarcane Yellow Leaf Virus from 19 Sugarcane-Producing Locations. Plant Disease. https://doi.org/10.1094/PDIS-10-22-2405-RE.

The effect of water incubation and host volatiles on spore germination of Calonectria pseudonaviculata, the causal agent of boxwood blight - (Abstract Only)

Nemataxa: a new taxonomic database for analysis of nematode community data - (Peer Reviewed Journal)
Baker, H., Ibarra Caballero, J., Gleason, C., Jahn, C., Hesse, C.N., Stewart, J., Zasada, I.A. 2023. Nemataxa: a new taxonomic database for analysis of nematode community data. Phytobiomes Journal. 7:385-391. https://doi.org/10.1094/PBIOMES-07-22-0042-R.

First report of the root-lesion nematode, Pratylenchus penetrans, parasitizing hemp (Cannabis sativa) in Washington - (Peer Reviewed Journal)
Zasada, I.A., Nunez-Rodriguez, L., Rivedal, H.M., Peetz, A.B., Ocamb, C. 2023. First report of the root-lesion nematode, Pratylenchus penetrans, parasitizing hemp (Cannabis sativa) in Washington. Plant Health Progress. https://doi.org/10.1094/PHP-12-22-0122-BR.

Identification and genetic characterization of a new totivirus from Bursera graveolens in western Ecuador - (Peer Reviewed Journal)
Cornejo-Franco, F., Alvarez-Quinto, R., Mollov, D.S., Quito-Avila, D. 2023. Identification and genetic characterization of a new totivirus from Bursera graveolens in western Ecuador. Archives of Virology. 168. https://doi.org/10.1007/s00705-023-05715-8.

An update on old, new, and emerging viruses infecting sugarcane - (Peer Reviewed Journal)
Daugrois, J. H., Mollov, D., Gao, S. J., Roumagnac, P., & Rott, P. 2023. An update on the old, new, and emerging viruses infecting sugarcane. Proceedings of the International Society of Sugar Cane Technologists. 31:550–557.

Rapid and scalable DNA extraction and real-time PCR assay from boxwood tissue for the detection of Calonectria pseudonaviculata, causal agent of boxwood blight - (Peer Reviewed Journal)
Ohkura, M., Scagel, C.F., Weiland, G.E. 2023. Rapid and scalable DNA extraction and real-time PCR assay from boxwood tissue for the detection of Calonectria pseudonaviculata, causal agent of boxwood blight. Plant Disease. 107(5):1279-1283. https://doi.org/10.1094/PDIS-06-22-1453-SR.

Guidelines for the reliable use of high throughput sequencing technologies to detect plant pathogens and pests - (Review Article)
Massart, S., Adams, I., Al Rwahnih, M., Baeyen, S., Bilodeau, G., Blouin, A., Boonham, N., Candresse, T., Chandelier, A., De Jonghe, K., Fox, A., Gaafar, Y., Gentit, P., Haegeman, A., Ho, W., Hurtado-Gonzales, O.P., Kreuze, J., Kutjnak, D., Landa, B., Liu, M., Maclot, F., Wight-Malapi, M., Maree, H., Martoni, F., Mehle, N., Minafra, A., Mollov, D.S., Moreira, A., Nakhla, M., Petter, F., Piper, A., Ponchart, J., Rae, R., Remenant, B., Rivera, Y., Rodoni, B., Botermans, M., Roenhorst, A., Rollin, J., Saldarelli, P., Santala, J., Spadaro, D., Souza-Richards, R., Studholme, D., Sultimanis, S., Van Der Vlugt, R., Tamisier, L., Trontin, C., Vazquez-Iglesias, I., Vicente, C., Vossenberg, B., Westenberg, M., Wetzel, T., Ziebell, H., Lebas, B. 2022. Guidelines for the reliable use of high throughput sequencing technologies to detect plant pathogens and pests. Review Article. volume 2, article e62. https://doi.org/10.24072/pcjournal.181.

Sugarcane mild mosaic virus: the rediscovery of an identified but unrecognized virus - (Peer Reviewed Journal)
Mollov, D.S., Filloux, D., Grinstead, S.C., Bolus, S.J., Claude, L., Fernandez, E., Julian, C., Candresse, T., Lockhart, B., Roumagnac, P., Rott, P., Daugrois, J. 2022. Sugarcane mild mosaic virus: the rediscovery of an identified but unrecognized virus. Plant Pathology. Volume 72, Issue 2 Pages 312-321. https://doi.org/10.1111/ppa.13654.

Diagnostic and historical surveys of sweet cherry (Prunus avium) virus and virus-like diseases in Oregon - (Peer Reviewed Journal)
Reinhold, L.A., Pscheidt, J.W. 2023. Diagnostic and historical surveys of sweet cherry (Prunus avium) virus and virus-like diseases in Oregon. Plant Disease. 107(3):633-643. https://doi.org/10.1094/PDIS-02-21-0327-SR.

Egg-laying and locomotory screens with C. elegans yield a nematode-selective small molecule stimulator of neurotransmitter release - (Peer Reviewed Journal)
Harrington, S., Knox, J., Burns, A., Choo, K., Au, A., Kitner, M.L., Haeberli, C., Pyche, J., D'Amata, C., Kim, Y., Volpatti, J., Guiliani, M., Snider, J., Wong, V., Palmeira, B., Redman, E., Vaidya, A., Gilleard, J., Stagljar, I., Cutler, S., Kulke, D., Dowling, J., Yip, C., Keiser, J., Zasada, I.A., Lautens, M., Roy, P. 2022. Egg-laying and locomotory screens with C. elegans yield a nematode-selective small molecule stimulator of neurotransmitter release. Communications Biology. 5. Article 865. https://doi.org/10.1038/s42003-022-03819-6.

Nursery production decisions on plant spacing and irrigation affect risks for boxwood blight - (Abstract Only)
Weiland, J.E., Ohkura, M., Scagel, C.F. 2022. Nursery production decisions on plant spacing and irrigation affect risks for boxwood blight. Phytopathology. 112:S3.204.

Rapid and scalable dna extraction and real-time pcr assay for the detection of the boxwood blight pathogen calonectria pseudonaviculata - (Abstract Only)
Ohkura, M.M., Scagel, C.F., Weiland, J.E. 2022. Rapid and scalable DNA extraction and real-time PCR assay for the detection of the boxwood blight pathogen Calonectria pseudonaviculata. Phytopathology. 112:S3.60.

Genome characterization and pathogenicity of two new hyptis pectinata viruses transmitted by distinct insect vectors - (Peer Reviewed Journal)
Reyes-Proano, E., Alrarez-Quinto, R., Delgado-Jimenez, J., Cornejo-Frnaco, F., Mollov, D.S., Bejerman, N., Quito-Avila, D. 2022. Genome characterization and pathogenicity of two new hyptis pectinata viruses transmitted by distinct insect vectors. Phytopathology. vol 112, no 11, pages 2440-2448. https://doi.org/10.1094/PHYTO-04-22-0130-R.

Transcriptional response of meloidogyne incognita to non-fumigant nematicides - (Peer Reviewed Journal)
Wram, C.L., Hesse, C.N., Zasada, I.A. 2022. Transcriptional response of meloidogyne incognita to non-fumigant nematicides. Molecular Plant-Microbe Interactions. 12:9814. https://doi.org/10.1038/s41598-022-13815-9.

Impacts of non-fumigant nematicides on transcription in meloidogyne incognita biochemical pathways - (Peer Reviewed Journal)
Wram, C.L., Hesse, C.N., Zasada, I.A. 2022. Impacts of non-fumigant nematicides on transcription in meloidogyne incognita biochemical pathways. Scientific Reports. 12:9875. https://doi.org/10.1038/s41598-022-14091-3.

Cool temperatures favor growth of Oregon isolates of Calonectria pseudonaviculata and increase severity of boxwood blight on two Buxus cultivars - (Peer Reviewed Journal)
Weiland, G.E., Ohkura, M., Scagel, C.F., Davis, E.A., Beck, B.R. 2022. Cool temperatures favor growth of Oregon isolates of Calonectria pseudonaviculata and increase severity of boxwood blight on two Buxus cultivars. Plant Disease. https://doi.org/10.1094/PDIS-04-22-0769-RE.

What is the optimal way to assess Meloidogyne spp. reproduction in greenhouse pot experiments? - (Peer Reviewed Journal)
Anderson, O.P., Wram, C.L., Zasada, I.A. 2022. What is the optimal way to assess Meloidogyne spp. reproduction in greenhouse pot experiments? Journal of Nematology. 54(1). Article 3922. https://doi.org/10.2478/jofnem-2022-0012.

Genome announcement: the draft genome of the carrot cyst nematode heterodera carotae - (Peer Reviewed Journal)
Wram, C.L., Hesse, C.N., Handoo, Z.A., Pacheco, H., Zasada, I.A. 2022. Genome announcement: the draft genome of the carrot cyst nematode heterodera carotae. Journal of Nematology. 22:113-121. https://doi.org/10.2478/jofnem-2022-0014.

Irrigation frequency and volume has little influence on Phytophthora root rot in container-grown rhododendron - (Peer Reviewed Journal)
Weiland, G.E., Scagel, C.F., Grunwald, N.J., Davis, E.A., Beck, B.R., Mitchell, J.N. 2022. Irrigation frequency and volume has little influence on Phytophthora root rot in container-grown rhododendron. Journal of Environmental Horticulture. 40(2):67-78. https://doi.org/10.24266/2573-5586-40.2.67.

First report of Macrophomina phaseolina causing charcoal root rot of Hebe (Veronica cupressoides, V. ochracea, and V. pinguifolia) in Oregon, U.S.A. - (Peer Reviewed Journal)
Weiland, G.E. 2022. First report of Macrophomina phaseolina causing charcoal root rot of Hebe (Veronica cupressoides, V. ochracea, and V. pinguifolia) in Oregon, U.S.A. Plant Disease. 106(7):1984. https://doi.org/10.1094/PDIS-09-21-2036-PDN.

Is disease induced by flooding representative of nursery conditions in rhododendrons infected with P. cinnamomi or P. plurivora? - (Peer Reviewed Journal)
Mestas, A., Weiland, G.E., Scagel, C.F., Grunwald, N.J., Davis, E.A., Mitchell, J.N., Beck, B.R. 2022. Is disease induced by flooding representative of nursery conditions in rhododendrons infected with P. cinnamomi or P. plurivora? Plant Disease. 106(4):1157-1166. https://doi.org/10.1094/PDIS-06-21-1340-RE.

TGenomic characterization of globodera ellingtonae populations from Chile - (Peer Reviewed Journal)
Hesse, C.N., Moreno, I., Acevedo Pardo, O., Pacheco Fuentes, H., Greiner, E., Dandurand, L., Zasada, I.A. 2021. TGenomic characterization of globodera ellingtonae populations from Chile. Journal of Nematology. 53:1-9. https://doi.org/10.21307/jofnem-2021-088.

Irrigation and rootstocks to manage northern root-knot nematode during wine grape vineyard establishment - (Peer Reviewed Journal)
East, K.E., Zasada, I.A., Schreiner, R.P., Moyer, M.M. 2021. Irrigation and rootstocks to manage northern root-knot nematode during wine grape vineyard establishment. Plant Health Progress. 23(1):49-56. https://doi.org/10.1094/PHP-06-21-0097-RS.

Call it herbal distancing© - (Trade Journal)
Ohkura, M., Nackley, L., Scagel, C.F., Weiland, G.E. 2021. Call it herbal distancing©. Digger. https://www.diggermagazine.com/wp-content/uploads/2021/08/.

Social distancing reduces boxwood blight incidence and severity - (Abstract Only)
Ohkura, M., Nackley, L.L., Mitchell, J.N., Scagel, C.F., Weiland, J.E. 2021. Social distancing reduces boxwood blight incidence and severity. Phytopathology. 111:S2.18.

The challenges of managing phytophthora root rot in the nursery industry - (Review Article)
Weiland, G.E. 2021. The challenges of managing phytophthora root rot in the nursery industry. Plant Health Progress. 22:332-341. https://doi.org/10.1094/PHP-02-21-0036-FI.

Challenges in managing phytophthora root rot and verticillium wilt of red raspberry - (Other)
Weiland, J.E. 2021. Challenges in managing phytophthora root rot and verticillium wilt of red raspberry. Video. https://mtvernon.wsu.edu/event/lunch-learn-challenges-in-managing-phytophthora-root-rot-and-verticillium-wilt-of-red-raspberry/

Optimizing inoculum production methods for infesting soil with phytophthora species - (Peer Reviewed Journal)
Davis, E.A., Weiland, G.E., Scagel, C.F. 2021. Optimizing inoculum production methods for infesting soil with phytophthora species. Plant Disease. https://doi.org/10.1094/PDIS-12-20-2698-RE.

Genomic analyses of globodera pallida, a quarantine agricultural pathogen in Idaho - (Peer Reviewed Journal)
Wasala, S.K., Howe, D.K., Dandurand, L.M., Zasada, I.A., Denver, D.R. 2021. Genomic analyses of globodera pallida, a quarantine agricultural pathogen in Idaho. Pathogens. 10(3):363. https://doi.org/10.3390/pathogens10030363.

Virulence of five phytophthora species causing rhododendron root rot in Oregon - (Peer Reviewed Journal)
Sacher, G.O., Scagel, C.F., Davis, E.A., Beck, B.R., Weiland, G.E. 2021. Virulence of five phytophthora species causing rhododendron root rot in Oregon. Plant Disease. https://doi.org/10.1094/PDIS-09-20-1873-RE.

First report of the hop cyst nematode, heterodera humuli, in two counties of the Yakima Valley region, WA, USA - (Peer Reviewed Journal)
Darling, E., Pu, J., Cole, E., Perrault, J., Christian, R., Hale, A., Warner, F., Zasada, I.A., Chung, H., Quintanilla, M. 2021. First report of the hop cyst nematode, heterodera humuli, in two counties of the Yakima Valley region, WA, USA. Plant Disease. 105(4):727-738. https://doi.org/10.1094/PDIS-08-20-1769-PDN.

Scouting for boxwood blight - (Other)
Weiland, J.E., Pscheidt, J., Santamaria, L. 2021. Scouting for boxwood blight. Youtube. https://www.youtube.com/watch?v=L-Yd8qCbb0A.

Shifting prevalence of plant- parasitic nematodes in orchards and vineyards of the Okanagan Valley, British Columbia - (Peer Reviewed Journal)
Forge, T.A., Munro, P., Midwood, A., Phillips, L., Hannam, K., Nielsen, D., Zasada, I.A. 2021. Shifting prevalence of plant- parasitic nematodes in orchards and vineyards of the Okanagan Valley, British Columbia. Plant Health Progress. 22:113-121. https://doi.org/10.1094/PHP-10-20-0079-RS.

Phytophthora species differ in response to phosphorous acid and mefenoxam for the management of phytophthora root rot in rhododendron - (Peer Reviewed Journal)
Weiland, G.E., Scagel, C.F., Grunwald, N.J., Davis, E.A., Beck, B.R. 2020. Phytophthora species differ in response to phosphorous acid and mefenoxam for the management of phytophthora root rot in rhododendron. Plant Disease. 105:1505-1514. https://doi.org/10.1094/PDIS-09-20-1960-RE.

Growth, sporulation, and pathogenicity of the raspberry pathogen phytophthora rubi under different temperature and moisture regimes - (Peer Reviewed Journal)
Graham, K.A., Beck, B.R., Zasada, I.A., Scagel, C.F., Weiland, G.E. 2021. Growth, sporulation, and pathogenicity of the raspberry pathogen phytophthora rubi under different temperature and moisture regimes. Plant Disease. https://doi.org/10.1094/PDIS-09-20-1916-RE.

Field performance of wine grape rootstocks and fumigation during the establishment phase of a chardonnay vineyard in Washington - (Peer Reviewed Journal)
East, K.E., Zasada, I.A., Tarara, J., Moyer, M.M. 2021. Field performance of wine grape rootstocks and fumigation during the establishment phase of a chardonnay vineyard in Washington. American Journal of Enology and Viticulture. 72:113-125. https://doi.org/10.5344/ajev.2020.20023.

Ectoparasitic nematodes: emerging challenges to wine grape production in the Pacific Northwest of North America - (Book / Chapter)
Zasada, I.A., and Forge, T.A. 2022. Ectoparasitic nematodes: Emerging challenges to wine grape production in the Pacific Northwest of North America. In: Integrated Nematode Management: State of the Art and Vision for the Future. R. Sikora, J. Desager, and L. Molendijk (eds.). Wallingford, UK: CABI. p. 192-198.

New reduced-risk agricultural nematicides – Rationale and review - (Peer Reviewed Journal)
Desaeger, J., Wram, C., Zasada, I.A. 2020. New reduced-risk agricultural nematicides – Rationale and review. Journal of Nematology. 52:1-16. https://doi.org/10.21307/jofnem-2020-091.

Differential response of Meloidogyne, Pratylenchus, Globodera, and Xiphenema species to the nematicide fluazaindolozine - (Peer Reviewed Journal)
Wram, C.L., Zasada, I.A. 2020. Differential response of Meloidogyne, Pratylenchus, Globodera, and Xiphenema species to the nematicide fluazaindolozine. Phytopathology. 110(12):2003-2009. https://doi.org/10.1094/PHYTO-05-20-0189-R.

Confirmation of Calonectria pseudonaviculata causing boxwood blight of Buxus sempervirens and Buxus cultivars in Oregon - (Peer Reviewed Journal)
Sacher, G.O., Weiland, G.E., Putnam, M.L., Crouch, J., Castroaguddin, V.L. 2020. Confirmation of Calonectria pseudonaviculata causing boxwood blight of Buxus sempervirens and Buxus cultivars in Oregon. Plant Disease. 104(6):1862. https://doi.org/10.1094/PDIS-01-20-0078-PDN.

Pathogenicity of five Phytophthora species causing rhododendron root rot in Oregon - (Abstract Only)
Sacher, G.O., Scagel, C.F., Davis, E.A., Beck, B.R., Weiland, J.E. 2020. Pathogenicity of five Phytophthora species causing rhododendron root rot in Oregon. Phytopathology. 110:S2.138.

Plastic mulches improved plant growth and suppressed weeds in late summer-planted floricane raspberrry - (Peer Reviewed Journal)
Zhang, H., Ghimire, S., Benedict, C., Zasada, I.A., Liu, H., Devetter, L., Miles, C. 2020. Plastic mulches improved plant growth and suppressed weeds in late summer-planted floricane raspberrry. HortScience. 55(4):565-572. https://doi.org/10.21273/HORTSCI14734-19.

Annual and perennial alleyway cover crops vary in their effects on physical, chemical, and biological properties of soil quality in Pacific Northwest red raspberry - (Peer Reviewed Journal)
Rudolph, R.E., Zasada, I.A., Hesse, C.N., Devetter, L.W. 2020. Annual and perennial alleyway cover crops vary in their effects on physical, chemical, and biological properties of soil quality in Pacific Northwest red raspberry. HortScience. 55(3):344-352. https://doi.org/10.21273/HORTSCI14511-19.

Soilborne Phytophthora and Pythium diversity from rhododendron in propagation, container, and field production systems of the Pacific Northwest - (Peer Reviewed Journal)
Weiland, G.E., Scagel, C.F., Grunwald, N.J., Davis, E.A., Beck, B.R., Foster, Z.S., Fieland, V.J. 2020. Soilborne Phytophthora and Pythium diversity from rhododendron in propagation, container, and field production systems of the Pacific Northwest. Plant Disease. 104(6):1841-1850. https://doi.org/10.1094/PDIS-08-19-1672-RE.

Scouting for boxwood blight: Insights from the 2019 survey - (Trade Journal)
Weiland, G.E., Pscheidt, J.W. 2020. Scouting for boxwood blight: Insights from the 2019 survey. Digger. March 2020:25-28. Available: http://www.diggermagazine.com/wp-content/uploads/2020/02/Digger_202003.pdf

Directed energy system technology for the control of soil borne fungal pathogens and plant-parasitic nematodes - (Peer Reviewed Journal)
Riga, E., Crisp, J.D., McComb, G.J., Zasada, I.A., Weiland, G.E. 2020. Directed energy system technology for the control of soil borne fungal pathogens and plant-parasitic nematodes. Pest Management Science. 76(6):2072-2078. https://doi.org/10.1002/ps.5745.

Boxwood (Buxus spp.)-Box Blight - (Other)
Pscheidt, J.W., Weiland, G.E. 2020. Boxwood (Buxus spp.)-Box Blight. Pacific North West Plant Disease Management Handbook. p. 4B-56 to 4B-58.

The draft genomes of Radopholus similis populations from Costa Rica - (Peer Reviewed Journal)
Wram, C.L., Hesse, C.N., Wasala, S.K., Howe, D.K., Peetz, A.B., Denver, D.R., Humprheys Pereira, D., Zasada, I.A. 2019. The draft genomes of Radopholus similis populations from Costa Rica. Journal of Nematology. 51:1-4. https://doi.org/10.21307/jofnem-2019-052.

How low can they go? Plant-parasitic nematodes in a Washington vineyard - (Peer Reviewed Journal)
East, K.E., Moyer, M.M., Madden, N.M., Zasada, I.A. 2019. How low can they go? Plant-parasitic nematodes in a Washington vineyard. Catalyst: Discovery into Practice. 3(1):31-36. https://doi.org/10.5344/catalyst.2019.19001.

Effect of the trap crop, Solanum sisymbriifolium, on Globodera pallida, Globodera tabacum, and Globodera ellingtonae - (Peer Reviewed Journal)
Dandurand, L.M., Zasada, I.A., Lamondia, J.A. 2019. Effect of the trap crop, Solanum sisymbriifolium, on Globodera pallida, Globodera tabacum, and Globodera ellingtonae. Journal of Nematology. 51:1-11. https://doi.org/10.21307/jofnem-2019-030.

Difference in toxicity and physiological response of Meloidogyne incognita to sub-lethal doses of post-plant nematicides - (Peer Reviewed Journal)
Wram, C.L., Zasada, I.A. 2019. Difference in toxicity and physiological response of Meloidogyne incognita to sub-lethal doses of post-plant nematicides. Phytopathology. 109(9):1605-1613. https://doi.org/10.1094/PHYTO-11-18-0420-R.

Variable abundance and distribution of Wolbachia and Cardinium Endosymbionts in plant-parasitic nematode field populations - (Peer Reviewed Journal)
Wasala, S.K., Brown, A.M., Kang, J., Howe, D.K., Peetz, A.B., Zasada, I.A., Denver, D.R. 2019. Variable abundance and distribution of Wolbachia and Cardinium Endosymbionts in plant-parasitic nematode field populations. Frontiers in Microbiology. 10:964. https://doi.org/10.3389/fmicb.2019.00964.

Population structure of Globisporangium cryptoirregulare from Rhododendron nurseries in Oregon - (Abstract Only)
Freire-Zapata, V., Calderon, P., Proaño, F., Scagel, C.F., Ward, C., Muñoz, Y.S., Grünwald, N.J., Weiland, J.E., Garzon, C. 2019. Population structure of Globisporangium cryptoirregulare from rhododendron nurseries in Oregon. Phytopathology. 109:S2.172.

Further elucidation of the host range of Globodera ellingtonae - (Peer Reviewed Journal)
Peetz, A.B., Baker, H., Zasada, I.A. 2019. Further elucidation of the host range of Globodera ellingtonae. Nematropica. 49(1):12-17.

Polyethylene and biodegradable plastic mulches improve growth, yield, and weed management in floricane red raspberry - (Peer Reviewed Journal)
Zhang, H., Miles, C., Ghimire, S., Benedict, C., Zasada, I.A., Devetter, L.W. 2019. Polyethylene and biodegradable plastic mulches improve growth, yield, and weed management in floricane red raspberry. Scientia Horticulturae. 250:371-379. https://doi.org/10.1016/j.scienta.2019.02.067.

Current status of potato cyst nematodes in the United States and Canada - (Peer Reviewed Journal)
Dandurand, L.M., Zasada, I.A., Wang, X., Mimee, B., Dejong, W., Novy, R.G., Whitworth, J.L., Kuhl, J. 2019. Current status of potato cyst nematodes in the United States and Canada. Annual Review of Phytopathology. 57:117-133. https://doi.org/10.1146/annurev-phyto-082718-100254.

Trends in occurrence, distribution, and population densities of plant-parasitic nematodes in the Pacific Northwest of the United States from 2012 to 2016 - (Peer Reviewed Journal)
Zasada, I.A., Kitner, M.L., Wram, C., Wade, N., Ingham, R.E., Hafez, S., Mojtahedi, H., Chavoshi, S., Hammack, N. 2019. Trends in occurrence, distribution, and population densities of plant-parasitic nematodes in the Pacific Northwest of the United States from 2012 to 2016. Plant Health Progress. 20(1):20-28. https://doi.org/10.1094/PHP-11-18-0077-RS.

Rhododendron-Phytophthora root rot - (Other)
Pscheidt, J.W., Ocamb, C., Weiland, G.E., Scagel, C.F., Sacher, G., Mestas, A. 2019. Rhododendron-Phytophthora root rot. Pages 4R-28 to 4R-30 in Pacific Northwest Plant Disease Control Handbook. Oregon State University, Corvallis, OR. https://pnwhandbooks.org/node/3437.

Developmental dynamics of Meloidogyne hapla in Washington wine grapes - (Peer Reviewed Journal)
East, K.E., Zasada, I.A., Schreiner, R.P., Moyer, M.M. 2019. Developmental dynamics of Meloidogyne hapla in Washington wine grapes. Plant Disease. 103(5):966-971. https://doi.org/10.1094/PDIS-07-18-1195-RE.

Analysis of nematode-endosymbiont coevolution in the Xiphinema americanum species complex using molecular markers of variable evolutionary rates - (Peer Reviewed Journal)
Howe, D.K., Smith, M., Tom, D.M., Brown, A.M., Peetz, A.B., Zasada, I.A., Denver, D.R. 2018. Analysis of nematode-endosymbiont coevolution in the Xiphinema americanum species complex using molecular markers of variable evolutionary rates. Nematology. 21(5):533-546. https://doi.org/10.1163/15685411-00003233.

Comparative genomics of Wolbachia-Cardinium dual endosymbiosis in a plant-parasitic nematode - (Peer Reviewed Journal)
Brown, A.M., Wasala, S.K., Howe, D.K., Peetz, A.B., Zasada, I.A., Denver, D.R. 2018. Comparative genomics of Wolbachia-Cardinium dual endosymbiosis in a plant-parasitic nematode. Frontiers in Microbiology. 9:2482. https://doi.org/10.3389/fmicb.2018.02482.

Brassicaceous seed meal, root removal, and chemical fumigation vary in their effects on soil quality parameters and Pratylenchus penetrans in a replanted floricane raspberry production system - (Peer Reviewed Journal)
Rudolph, R.E., Zasada, I.A., Hesse, C.N., Devetter, L.W. 2018. Brassicaceous seed meal, root removal, and chemical fumigation vary in their effects on soil quality parameters and Pratylenchus penetrans in a replanted floricane raspberry production system. Applied Soil Ecology. 113:44-51. https://doi.org/10.1016/j.apsoil.2018.08.024.

Disease control of Phytophthora plurivora and other Phytophthora species infecting European beech and rhododendron in the United States - (Abstract Only)
Weiland, G.E., Grunwald, N.J., Scagel, C.F. 2018. Disease control of Phytophthora plurivora and other Phytophthora species infecting European beech and rhododendron in the United States. Meeting Abstract for LIFE+ ELMIAS Ash and Elm, and IUFRO WP 7.02.01 Root and Stem Rots Conference (LIFE-IUFRO); 2018. Aug 26-Sept 1; Uppsala and Visby, Sweden.

Presence and distribution of heavy metal tolerant fungi in surface soils of a temperate pine forest - (Peer Reviewed Journal)
Torrez-Cruz, T.J., Hesse, C.N., Kuske, C.R., Porras-Alfaro, A. 2018. Presence and distribution of heavy metal tolerant fungi in surface soils of a temperate pine forest. Applied Soil Ecology. 131:66-74. https://doi.org/10.1016/j.apsoil.2018.08.001.

Vitis spp. rootstocks are poor hosts for Meloidogyne hapla, a nematode commonly found in Washington winegrape vineyards - (Peer Reviewed Journal)
Zasada, I.A., Howland, A.D., Peetz, A.B., East, K., Moyer, M.M. 2019. Vitis spp. rootstocks are poor hosts for Meloidogyne hapla, a nematode commonly found in Washington winegrape vineyards. American Journal of Enology and Viticulture. 70(1):1-8. https://doi.org/10.5344/ajev.2018.18027.

Plant-parasitic nematodes of Idaho, Oregon, and Washington (Pacific Northwest) - (Book / Chapter)
Zasada, I.A., Dandurand, L., Gleason, C., Hagerty, C., Ingham, R. 2018. Plant-parasitic nematodes of Idaho, Oregon, and Washington (Pacific Northwest). In: Subbotin, S.A., Chitambar, J.J., editors. Plant Parasitic Nematodes in Sustainable Agriculture of North America, Vol. 1 – Canada, Mexico and Western USA. Cham, Switzerland: Springer. p. 211-240.

Effectiveness of nontarped broadcast fumigation and root removal on root lesion nematode and Fusarium and Pythium species in a red raspberry system - (Peer Reviewed Journal)
Devetter, L., Watkinson, S., Zasada, I.A., Weiland, G.E., Hesse, C.N., Walters, T.W. 2018. Effectiveness of nontarped broadcast fumigation and root removal on root lesion nematode and Fusarium and Pythium species in a red raspberry system. Plant Health Progress. 19(2):168-175. https://doi.org/10.1094/PHP-01-18-0006-RS.

Genome-based evolutionary history of Pseudomonas spp - (Peer Reviewed Journal)
Hesse, C.N., Schulz, F., Bull, C.T., Shaffer, B.T., Yan, Q., Shapiro, N., Hassan, K.A., Varghese, N., Elbourne, L.D., Paulsen, I.T., Kyrpides, N., Woyke, T., Loper, J.E. 2018. Genome-based evolutionary history of Pseudomonas spp. Environmental Microbiology. 20(6):2142–2159. https://doi.org/10.1111/1462-2920.14130.

Contribution of a winter wheat cover crop to the maintenance of root lesion nematode populations in the red raspberry production system - (Peer Reviewed Journal)
Rudolph, R.E., Walters, T.W., Devetter, L.W., Zasada, I.A. 2018. Contribution of a winter wheat cover crop to the maintenance of root lesion nematode populations in the red raspberry production system. HortTechnology. 28(2):182-188. https://doi.org/10.21273/HORTTECH03971-18.

A rapid, sensitive and field-deployable isothermal assay for the detection of Verticillium alfalfae - (Peer Reviewed Journal)
Reyes Gaige, A., Dung, J.K., Weiland, G.E. 2018. A rapid, sensitive and field-deployable isothermal assay for the detection of Verticillium alfalfae. Canadian Journal of Plant Pathology. https://doi.org/10.1080/07060661.2018.1474262.

Heroes and villains: Research identifies harmful and beneficial microbes in nursery soil - (Trade Journal)
Weiland, G.E., Scagel, C.F., Grunwald, N.J., Foster, Z., Fieland, V., Santamaria, L. 2018. Heroes and villains: Research identifies harmful and beneficial microbes in nursery soil. Digger. March:25-29.

Late summer disease symptoms in western Washington red raspberry fields associated with co-occurrence of Phytophthora rubi, Verticillium dahliae, and Pratylenchus penetrans, but not Raspberry bushy dwarf virus - (Peer Reviewed Journal)
Weiland, G.E., Benedict, C., Zasada, I.A., Scagel, C.F., Beck, B.R., Davis, E.A., Graham, K., Peetz, A.B., Martin, R.R., Dung, J.K., Reyes Gaige, A., Thiessen, L.S. 2017. Late summer disease symptoms in western Washington red raspberry fields associated with co-occurrence of Phytophthora rubi, Verticillium dahliae, and Pratylenchus penetrans, but not Raspberry bushy dwarf virus. Plant Disease. 102(5):938-947. https://doi.org/10.1094/PDIS-08-17-1293-RE.