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Bean common mosaic virus Isolate Exhibits a Novel Pathogenicity Profile in Common Bean, Overcoming the bc-3 Resistance Allele Coding for the Mutated eIF4E Translation Initiation Factor

Creator:: Feng, Xue, Myers, James R., and Karasev, Alexander V.
Abstract:: Resistance against Bean common mosaic virus (BCMV) in Phaseolus vulgaris is governed by six recessive resistance alleles at four loci. One of these alleles, bc-3, is able to protect P. vulgaris against all BCMV strains and against other potyviruses; bc-3 was identified as the eIF4E allele carrying mutated eukaryotic translation...
Resource Type:: Article
Full Text:: ., and Forster, R.L., editors). 446 The American Phytopathological Society: St. Paul, MN; pp. 60-62

Resistance and Tolerance of Landrace Wheat in Fields Infested with Pratylenchus neglectus and P. thornei

Creator:: Smiley, Richard W., Gourlie, Jennifer A., Yan, Guiping, and Rhinhart, Karl E. L.
Abstract:: Pratylenchus neglectus and P. thornei reduce wheat yields in the Pacific Northwest USA. Resistant landrace cultivars have been identified using controlled environments. Field resistance and tolerance characteristics were compared over three years and two locations for four spring wheat cultivars; the susceptible cultivars Alpowa and Louise, and the resistant landraces...
Resource Type:: Article
Full Text:: /PDIS-10-13-1069-RE The American Phytopathological Society Accepted Manuscript http

Minimizing Crop Damage Through Understanding Relationships Between Pyrethrum Phenology and Ray Blight Disease Severity

Creator:: Pethybridge, Sarah J., Gent, David H., Groom, Tim, and Hay, Frank S.
Abstract:: The most damaging foliar disease of pyrethrum in Australia is ray blight caused by Stagonosporopsis tanaceti. The probability of growers incurring economic losses caused by this disease has been substantially reduced by the implementation of a prophylactically applied spring fungicide program. This has been traditionally initiated when 50% of the...
Resource Type:: Article
Full Text:: © 2013 The American Phytopathological Society 1432 Plant Disease / Vol. 97 No. 11 Interestingly

Developing a Real-Time PCR Assay for Detection and Quantification of Pratylenchus neglectus in Soil

Creator:: Yan, Guiping, Smiley, Richard W., Okubara, Patricia A., Skantar, Andrea M., and Reardon, Catherine L.
Abstract:: Pratylenchus neglectus is one of the most widespread and economically important nematodes that invades plant roots and restricts wheat productivity in the Pacific Northwest. It is challenging to quantify P neglectus using microscopic methods for studies that require large-scale sampling, such as assessment of rotation crops, wheat cultivars, and other...
Resource Type:: Article
Full Text:: ://dx.doi.org/10.1094 / PDIS-08-12-0729-RE © 2013 The American Phytopathological Society 758 Plant Disease

Pathogenicity and Virulence of Pythium Species Obtained from Forest Nursery Soils on Douglas-Fir Seedlings

Creator:: Weiland, Jerry E., Beck, Bryan R., and Davis, Anne
Abstract:: Pythium species are common soilborne oomycetes that occur in forest nursery soils throughout the United States. Numerous species have been described from nursery soils. However, with the exception of P. aphanidermatum, P irregulare, P. sylvaticum, and P ultimum, little is known about the potential for other Pythium species found in...
Resource Type:: Article
Full Text:: reprinted with customary crediting of the source. The American Phytopatho- logical Society, 2013. Plant

A Real-Time PCR Assay for Early Detection of Eastern Filbert Blight

Creator:: Molnar, Thomas J., Walsh, Emily, Capik, John M., Sathuvalli, Vidyasagar, Mehlenbacher, Shawn A., Rossman, Amy Y., and Zhang, Ning
Abstract:: Eastern filbert blight (EFB) is a devastating disease of European hazelnut, Corylus avellana, which causes economic losses in Oregon, where 99% of the U.S. crop is produced. The causal fungus, Anisogramma anomala, is native to eastern North America, where it is found associated with the American hazelnut (C. americana). Although...
Resource Type:: Article
Full Text:: ://dx.doi.org/10.1094 / PDIS-11-12-1041-RE © 2013 The American Phytopathological Society 814 Plant Disease

Sclerotinia Wilt of Hop (Humulus lupulus) Caused by Sclerotinia sclerotiorum in the Pacific Northwest United States

Creator:: Kropf, S. M., Putnam, M. L., Serdani, M., Twomey, M. C., Woods, J. L., and Gent, D. H.
Abstract:: In June 2009, wilted hop bines were observed in a yard in Marion County, OR. The wilt was associated with a stem rot that occurred ∽1 m from the ground near the point where bines are tied together for horticultural purposes. Samples of affected stems were submitted to the Oregon...
Resource Type:: Article

First Report of Zebra Chip Disease and “Candidatus Liberibacter solanacearum” on Potatoes in Oregon and Washington State

Creator:: Crosslin, J. M., Hamm, P. B., Eggers, J. E., Rondon, Silvia I., Sengoda, V. G., and Munyaneza, J. E.
Abstract:: In August of 2011, potato (Solanum tuberosum) tubers grown in the lower Columbia Basin of southern Washington State and northern Oregon were observed with internal discolorations suggestive of zebra chip disease (ZC). Symptoms included brown spots, streaks, and stripes in and near the vascular tissue, typical of ZC (1). Symptoms...
Resource Type:: Article

Effects of the Mycoparasite Sphaerellopsis filum on Overwintering Survival of Stem Rust in Perennial Ryegrass

Creator:: Gordon, T. C. and Pfender, W. F.
Abstract:: Sphaerellopsis filum is a mycoparasite of Puccinia graminis subsp. graminicola, a rust fungus that causes widespread crop damage on perennial ryegrass grown for seed. In observations taken over the winter months, S. filum was found naturally colonizing 2% of P. graminis subsp. graminicola uredinia on first-year plantings and 25% of...
Resource Type:: Article
Full Text:: customary crediting of the source. The American Phytopatho- logical Society, 2012. 1472 Plant Disease

Association of Spring Pruning Practices with Severity of Powdery Mildew and Downy Mildew on Hop

Creator:: Gent, David H., Nelson, Mark E., Grove, Gary G., Mahaffee, Walter F., Turechek, William W., and Woods, Joanna L.
Abstract:: Downy mildew (caused by Pseudoperonospora humuli) and powdery mildew (caused by Podosphaera macularis) are important diseases of hop in the Pacific Northwest United States, and cultural practices may affect the severity of both diseases. The association of spring pruning quality and timing with severity of downy mildew and powdery mildew...
Resource Type:: Article
Full Text:: be freely reprinted with customary crediting of the source. The American Phytopatho- logical Society

ScholarsArchive@OSU

Bean common mosaic virus Isolate Exhibits a Novel Pathogenicity Profile in Common Bean, Overcoming the bc-3 Resistance Allele Coding for the Mutated eIF4E Translation Initiation Factor

Resistance and Tolerance of Landrace Wheat in Fields Infested with Pratylenchus neglectus and P. thornei

Minimizing Crop Damage Through Understanding Relationships Between Pyrethrum Phenology and Ray Blight Disease Severity

Developing a Real-Time PCR Assay for Detection and Quantification of Pratylenchus neglectus in Soil

Pathogenicity and Virulence of Pythium Species Obtained from Forest Nursery Soils on Douglas-Fir Seedlings

A Real-Time PCR Assay for Early Detection of Eastern Filbert Blight

Sclerotinia Wilt of Hop (Humulus lupulus) Caused by Sclerotinia sclerotiorum in the Pacific Northwest United States

First Report of Zebra Chip Disease and “Candidatus Liberibacter solanacearum” on Potatoes in Oregon and Washington State

Effects of the Mycoparasite Sphaerellopsis filum on Overwintering Survival of Stem Rust in Perennial Ryegrass

Association of Spring Pruning Practices with Severity of Powdery Mildew and Downy Mildew on Hop

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