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Creator:: Hansen, Zachariah R., Knaus, Brian J., Tabima, Javier F., Press, Caroline M., Judelson, Howard S., Grünwald, Niklaus J., and Smart, Christine D.
Abstract:: Phytophthora infestans, the cause of the devastating late blight disease of potato and tomato, exhibits a clonal reproductive lifestyle in North America. Phenotypes such as fungicide sensitivity and host preference are conserved among individuals within clonal lineages, while substantial phenotypic differences can exist between lineages. Whole P. infestans genomes were...
Resource Type:: Article
Full Text:: © 2016 The American Phytopathological Society Plant Disease / July 2016 1297 used to discriminate

Creator:: Weiland, Jerry E., Garrido, Patricia, Kamvar, Zhian N., Espíndola, Andrés S., Marek, Stephen M., Grünwald, Niklaus J., and Garzón, Carla D.
Abstract:: Pythium species are important soilborne pathogens occurring in the forest nursery industry of the Pacific Northwest. However, little is known about their genetic diversity or population structure and it is suspected that isolates are moved among forest nurseries on seedling stock and shared field equipment. In order to address these...
Resource Type:: Article

Creator:: Saville, Amanda, Graham, Kim, Grünwald, Niklaus J., Myers, Kevin, Fry, William E., and Ristaino, Jean Beagle
Abstract:: Phytophthora infestans causes potato late blight, an important and costly disease of potato and tomato crops. Seven clonal lineages of P. infestans identified recently in the United States were tested for baseline sensitivity to six oomycete-targeted fungicides. A subset of the dominant lineages (n = 45) collected between 2004 and...
Resource Type:: Article
Full Text:: 10.1094/PDIS-05-14-0452-RE American Phytopathological Society Version of Record http

Creator:: Stewart, Jane E., Kroese, Duncan, Tabima, Javier F., Larsen, Meredith M., Fieland, Valerie J., Press, Caroline M., Zasada, Inga A., and Grünwald, Niklaus J.
Abstract:: Root rot of raspberry (Rubus idaeus), thought to be primarily caused by Phytophthora rubi, is an economically important disease in the western United States. The objectives of this study were to determine which Phytophthora species are involved in root rot, examine the efficacy of different isolation methods (cane, root, and...
Resource Type:: Article
Full Text:: customary crediting of the source. The American Phytopatho- logical Society, 2014. Plant Disease

Creator:: Parke, Jennifer L., Knaus, Brian J., Fieland, Valerie J., Lewis, Carrie, and Grünwald, Niklaus J.
Abstract:: Nursery plants are important vectors for plant pathogens. Understanding what pathogens occur in nurseries in different production stages can be useful to the development of integrated systems approaches. Four horticultural nurseries in Oregon were sampled every 2 months for 4 years to determine the identity and community structure of Phytophthora...
Resource Type:: Article
Full Text:: American Phytopathological Society Vol. 104, No. 10, 2014 1053 nated as A, B, C, and D) ranged in

Creator:: Weiland, Jerry E., Santamaria, Luisa, and Grünwald, Niklaus J.
Abstract:: Mefenoxam and fosetyl-Al are common fungicides used to supplement disease control of Pythium damping-off and root rot in forest nurseries of the western United States. However, it is unknown whether fungicide-resistant Pythium isolates are present or whether new fungicide and biological treatments might also provide supplemental disease control. Isolates of...
Resource Type:: Article
Full Text:: of the source. The American Phytopatho- logical Society, 2014. 938 Plant Disease / Vol. 98 No. 7

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