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United States Department of Agriculture

Agricultural Research Service

Research Project: Improved Strategies for Management of Soilborne Diseases of Horticultural Crops

Location: Horticultural Crops Research

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

Investigations into the biosynthesis, regulation and self-resistance of toxoflavin in Pseudomonas protegens Pf-5 - (Peer Reviewed Journal)
Philmus, B.J., Shaffer, B.T., Kidarsa, T.A., Yan, Q., Raaijmakers, J.M., Begley, T.P., Loper, J.E. 2015. Investigations into the biosynthesis, regulation and self-resistance of toxoflavin in Pseudomonas protegens Pf-5. ChemBioChem. DOI: 10.1002/cbic.201500247.
First description of necrosis in leaves and pseudo-bulbs of Oncidium orchids caused by Burkholderia gladioli in São Paulo State, Brazil - (Peer Reviewed Journal)
Mano, E.T., Minami, S.N., Loper, J.E., Araujo, W.L. 2015. First description of necrosis in leaves and pseudo-bulbs of Oncidium orchids caused by Burkholderia gladioli in São Paulo State, Brazil. Plant Disease. DOI: 10.1094/PDIS-03-15-0297-PDN.
Soilborne Diseases of the Nursery Industry: USDA-ARS and OSU Team Up to Tackle this Pernicious Problem - (Trade Journal)
Weiland, G.E., Scagel, C.F., Grunwald, N.J., Foster, Z., Santamaria, L. 2015. Soilborne Diseases of the Nursery Industry: USDA-ARS and OSU Team Up to Tackle this Pernicious Problem. Digger. 59(7):33-36.
Host status of own-rooted Vitis vinifera varieties to Meloidogyne hapla - (Peer Reviewed Journal)
Howland, A., Skinkis, P.A., Wilson, J.H., Riga, E., Pinkerton, J.N., Schreiner, R.P., Zasada, I.A. 2015. Host status of own-rooted Vitis vinifera varieties to Meloidogyne hapla. Journal of Nematology. 47:141-147.
Impact of grapevine (Vitis vinifera) varieties on reproduction of the northern root-knot nematode (Meloidogyne hapla) - (Peer Reviewed Journal)
Howland, A.D., Skinkis, P.A., Wilson, J.H., Riga, E., Pinkerton, J.N., Schreiner, R.P., Zasada, I.A. 2015. Impact of grapevine (Vitis vinifera) varieties on reproduction of the northern root-knot nematode (Meloidogyne hapla). Journal of Nematology. 47(2):141–147.
Greenhouse plants, ornamental – Pythium seed rot, damping-off, and root rot - (Review Article)
Weiland, G.E., Santamaria, L. 2015. Greenhouse plants, ornamental – Pythium seed rot, damping-off, and root rot. Pacific Northwest Plant Disease Control Handbook. p. 4G-47-4G-48..
Population structure of Pythium irregulare, P. sylvaticum, and P. ultimum in forest nursery soils of Oregon and Washington - (Peer Reviewed Journal)
Weiland, G.E., Garrido, P., Kamvar, Z.N., Marek, S.M., Grunwald, N.J., Garzon, C.D. 2015. Population structure of Pythium irregulare, P. sylvaticum, and P. ultimum in forest nursery soils of Oregon and Washington. Phytopathology. 105(5):684-694.
Impact of Pratylenchus penetrans on establishment of red raspberry - (Peer Reviewed Journal)
Zasada, I.A., Weiland, G.E., Han, Z., Walters, T.W., Moore, P.P. 2015. Impact of Pratylenchus penetrans on establishment of red raspberry. Plant Disease. 99(7):939-946.
Effect of storage environment on hatching of Globodera ellingtonae - (Peer Reviewed Journal)
Ingham, R.E., Kroese, D.R., Zasada, I.A. 2015. Effect of storage environment on hatching of Globodera ellingtonae. Journal of Nematology. 47:45-51.
The Rsm regulon of plant growth-promoting Pseudomonas fluorescens SS101: role of small RNAs in regulation of lipopeptide biosynthesis - (Peer Reviewed Journal)
Song, C., Van Der Voort, M., Van De Mortel, J., Hassan, K.A., Elbourne, L.D., Paulsen, I.T., Loper, J.E., Raaijmakers, J.M. 2014. The Rsm regulon of plant growth-promoting Pseudomonas fluorescens SS101: role of small RNAs in regulation of lipopeptide biosynthesis. Microbial Biotechnology. 8(2):296-310.
Spatial distribution of plant-parasitic nematodes in semi-arid Vitis vinifera vineyards in Washington - (Peer Reviewed Journal)
Howland, A.D., Schreiner, R.P., Zasada, I.A. 2014. Spatial distribution of plant-parasitic nematodes in semi-arid Vitis vinifera vineyards in Washington. Journal of Nematology. 46:321-330.
First report of Phytophthora cactorum and P. citrophthora causing root rot of Ribes lobbii (Gray) in Oregon - (Peer Reviewed Journal)
Weiland, G.E. 2015. First report of Phytophthora cactorum and P. citrophthora causing root rot of Ribes lobbii (Gray) in Oregon. Plant Disease. 99(1):157.
Host status of Rubus species and hybrids for the root lesion nematode, Pratylenchus penetrans - (Peer Reviewed Journal)
Zasada, I.A., Moore, P.P. 2014. Host status of Rubus species and hybrids for the root lesion nematode, Pratylenchus penetrans. HortScience. 49:1128-1131.
Analysis of genome sequences from plant pathogenic Rhodococcus reveals genetic novelties in virulence loci - (Peer Reviewed Journal)
Creason, A.L., Vandeputte, O.M., Savory, E.A., Davis, E.W., Putnam, M.L., Hu, E., Swader-Hines, D., Mol, A., Baucher, M., Prinsen, E., Zdanowska, M., Givan, S.A., El Jaziri, M., Loper, J.E., Mahmud, T., Chang, J.H. 2014. Analysis of genome sequences from plant pathogenic Rhodococcus reveals genetic novelties in virulence loci. PLoS One. 9(7):e101996.
Pathogenicity, fungicide resistance, and genetic variability of Phytophthora rubi isolates from raspberry (Rubus idaeus) in the Western United States - (Peer Reviewed Journal)
Stewart, J.E., Kroese, D.R., Tabima, J.F., Larsen, M.M., Fieland, V.J., Press, C.M., Zasada, I.A., Grunwald, N.J. 2014. Pathogenicity, fungicide resistance, and genetic variability of Phytophthora rubi isolates from raspberry (Rubus idaeus) in the Western United States. Plant Disease. 98:1702-1708.
Variation in response among Pythium species and isolates to Streptomyces lydicus - (Abstract Only)
(09-May-14)
Impact of Pratylenchus penetrans on established red raspberry productivity - (Peer Reviewed Journal)
Han, Z., Walters, T.W., Zasada, I.A. 2014. Impact of Pratylenchus penetrans on established red raspberry productivity. Plant Disease. 98:1514-1520.
Identifying rates of meadowfoam (Limnanthes alba) seed meal needed for suppression of Meloidogyne hapla and Pythium irregulare in soil - (Peer Reviewed Journal)
Ersahin, Y.S., Weiland, G.E., Zasada, I.A., Reed, R.L., Stevens, J.F. 2014. Identifying rates of meadowfoam (Limnanthes alba) seed meal needed for suppression of Meloidogyne hapla and Pythium irregulare in soil. Plant Disease. 98(9):1253-1260.
Pseudomonas protegens Pf-5 causes discoloration and pitting of mushroom caps due to the production of antifungal metabolites - (Peer Reviewed Journal)
Henkels, M.D., Kidarsa, T.A., Shaffer, B.T., Goebel, N.C., Burlinson, P., Mavrodi, D.V., Bentley, M.A., Rangel, L.I., Davis Ii, E.W., Thomashow, L.S., Zabriskie, T., Preston, G.M., Loper, J.E. 2014. Pseudomonas protegens Pf-5 causes discoloration and pitting of mushroom caps due to the production of antifungal metabolites. Molecular Plant-Microbe Interactions. 27(7):733-746.
Using mitogenomic and nuclear ribosomal sequence data to investigate the phylogeny of the Xiphinema americanum species complex - (Peer Reviewed Journal)
Zasada, I.A., Peetz, A.B., Howe, D.K., Wilhelm, L.J., Cheam, D., Denver, D.R., Smythe, A.B. 2014. Using mitogenomic and nuclear ribosomal sequence data to investigate the phylogeny of the Xiphinema americanum species complex. PLoS One. 9:e90035.
Sensitivity of Pythium irregulare, P. sylvaticum, and P. ultimum from forest nurseries to mefenoxam and fosetyl-al, and control of Pythium damping-off - (Peer Reviewed Journal)
Weiland, G.E., Santamaria, L., Grunwald, N.J. 2014. Sensitivity of Pythium irregulare, P. sylvaticum, and P. ultimum from forest nurseries to mefenoxam and fosetyl-al, and control of Pythium damping-off. Plant Disease. 98:937-942.
Understanding the pathology of Douglas-fir seedlings in Pacific Northwest nurseries - (Proceedings)
(15-Jan-14)
Methyl bromide phase out could affect future reforestation efforts - (Trade Journal)
Weiland, G.E. 2014. Methyl bromide phase out could affect future reforestation efforts. Western Forester. 59:8-10.
Pythium species and isolate diversity influence inhibition by the biological control agent Streptomyces lydicus - (Peer Reviewed Journal)
Weiland, G.E. 2014. Pythium species and isolate diversity influence inhibition by the biological control agent Streptomyces lydicus. Plant Disease. 98(5):653-659.
Verticillium wilt in the Pacific Northwest - (Review Article)
Dung, J., Weiland, G.E., Pscheidt, J.W. 2014. Verticillium wilt in the Pacific Northwest. Pacific Northwest Plant Disease Control Handbook. p. 3-22 to 3-28.
pA506: A conjugative plasmid of the plant epiphyte Pseudomonas fluorescens A506 - (Peer Reviewed Journal)
Stockwell, V.O., Davis, E.W., Carey, A.B., Shaffer, B.T., Mavrodi, D.V., Hassan, K.A., Hockett, K.L., Thomashow, L.S., Paulsen, I.T., Loper, J.E. 2013. pA506: A conjugative plasmid of the plant epiphyte Pseudomonas fluorescens A506. Applied and Environmental Microbiology. 79:5272-5282.
The Gac Regulon of Pseudomonas fluorescens SBW25 - (Peer Reviewed Journal)
Cheng, X., De Bruijn, I., Van Der Voort, M., Loper, J.E., Raaijmakers, J.M. 2013. The Gac Regulon of Pseudomonas fluorescens SBW25. Environment Microbiology Reports. 5:608-619.
Effect of tannic acid on the transcriptome of the soil bacterium Pseudomonas protegens Pf-5 - (Peer Reviewed Journal)
Lim Kent, L., Penesyan, A., Hassan, K.H., Loper, J.E., Paulsen, I. 2013. Effect of tannic acid on the transcriptome of the soil bacterium Pseudomonas protegens Pf-5. Applied and Environmental Microbiology. 79:3141-3145.
Pathogenicity and virulence of Pythium species obtained from forest nursery soils on Douglas-fir seedlings - (Peer Reviewed Journal)
Weiland, G.E., Beck, B.R., Davis, E.A. 2013. Pathogenicity and virulence of Pythium species obtained from forest nursery soils on Douglas-fir seedlings. Plant Disease. 97: 744-748.
Genes expressed by the biological control bacterium Pseudomonas protegens Pf-5 on seed surfaces under the control of the global regulators GacA and RpoS - (Peer Reviewed Journal)
Kidarsa, T.A., Shaffer, B.T., Goebel, N.C., Roberts, D.P., Buyer, J.S., Johnson, A., Kobayashi, D.Y., Paulsen, I., Loper, J.E. 2013. Genes expressed by the biological control bacterium Pseudomonas protegens Pf-5 on seed surfaces under the control of the global regulators GacA and RpoS. Environmental Microbiology. 15:716-735.
Integration of brassicaceous seed meals into red raspberry production systems - (Peer Reviewed Journal)
Gigot, J., Zasada, I.A., Walters, T.W. 2012. Integration of brassicaceous seed meals into red raspberry production systems. Applied Soil Ecology. 64:23-31.
The effect of zinc limitation on the transcriptome of Pseudomonas protegens Pf-5 - (Peer Reviewed Journal)
Lim, C., Hassan, K.A., Penesyan, A., Loper, J.E., Paulsen, I. 2013. The effect of zinc limitation on the transcriptome of Pseudomonas protegens Pf-5. Environmental Microbiology. 15:702-715.
Last Modified: 8/27/2015
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