Timothy L Friesen
Cereal Crops Research
Research Plant Pathologist
Phone: (701) 239-1337
Fax: (701) 239-1369
USDA,ARS,NCSL
1307 18TH ST N FARGO, ND, 58102-2765
Lu, S., Edwards, M.C., Friesen, T.L. 2013. Genetic variation of single nucleotide polymorphisms identified at the mating type locus correlates with form-specific disease phenotype in the barley net blotch fungus Pyrenophora teres. European Journal of Plant Pathology. 135(1):49-65.
Lu, S., Friesen, T.L., Faris, J.D. 2012. Differential expression of the pathogenesis-related protein 1 (PR-1) gene family in stem rust (Puccinia graminis f. sp. tritici )-wheat interactions. Meeting Abstract. 102:S4.73.
Klindworth, D.L., Niu, Z., Chao, S., Friesen, T.L., Jin, Y., Faris, J.D., Cai, X., Xu, S.S. 2012. Introgression and characterization of a goatgrass gene for a high level of resistance to Ug99 stem rust in tetraploid wheat . Genes, Genomes, Genetics. 2:665-673.
Liu, Z.H., Zhong, S., Stasko, A.K., Edwards, M.C., Friesen, T.L. 2012. Virulence profile and genetic structure of a North Dakota population of Pyrenophora teres f. teres, the causal agent of net form net blotch of barley. Phytopathology. 102:539-546.
Crook, A.D., Friesen, T.L., Liu, Z.H., Ojiambo, P.S., Cowger, C. 2012. Novel necrotrophic effectors from stagonospora nodorum and corresponding host genes in winter wheat germplasm in the Southeastern United States. Phytopathology. 102:498-505.
Faris, J.D., Zhang, Z., Rasmussen, J.B., Friesen, T.L. 2011. Variable expression of the Stagonospora nodorum effector SnToxA among isolates is correlated with levels of disease susceptibility in wheat. Molecular Plant-Microbe Interactions. 24:1419-1426.
Chu, C., Niu, Z., Zhong, S., Chao, S., Friesen, T.L., Halley, S., Elias, E.M., Dong, Y., Faris, J.D., Xu, S.S. 2011. Identification and molecular mapping of two QTLs with major effects for resistance to Fusarium head blight in wheat. Theoretical and Applied Genetics. 123(7):1107-1119.
Waters, O.D., Lichtenzveig, J., Rybak, K., Friesen, T.L., Oliver, R.P. 2011. Prevalence and importance of sensitivity to the Stagonospora nodorum necrotrophic effector, SnTox3, in current Western Australian wheat cultivars. Crop and Pasture Science. 62:533-549.
Lu, S., Friesen, T.L., Faris, J.D. 2011. Molecular characterization and genomic mapping of the pathogenesis-related protein 1 (PR-1) gene family in hexaploid wheat (Triticum aestivum L.). Molecular Genetics and Genomics. 285:485-503.
Xu, S.S., Chu, C., Friesen, T.L., Chao, S., Zhong, S., Halley, S., Cai, X., Elias, E.M. 2010. Introgression of two major FHB-resistance QTLs into durum and hard red spring wheat. Meeting Abstract. pg. 172.
Abeysekara, N.S., Friesen, T.L., Liu, Z., Mcclean, P.E., Faris, J.D. 2010. Marker Development and Saturation Mapping of the Tan Spot Ptr ToxB Sensitivity locus Tsc2 in Hexaploid Wheat. The Plant Genome. 3:179-189.
Lu, S., Platz, G., Edwards, M.C., Friesen, T.L. 2010. Mating Type (MAT) Locus -Specific PCR Markers for Differentiation of Pyrenophora teres f. teres and P. teres f. maculata, the Causal Agents of Barley Net Blotch. Phytopathology. 100(12):1298-1306.
Liu, Z., Faris, J.D., Edwards, M.C., Friesen, T.L. 2010. Development of Expressed Sequence Tag (EST)–based Markers for Genomic Analysis of a Barley 6H Region Harboring Multiple Net Form Net Blotch Resistance Genes. The Plant Genome. 3:41-52
Liu, Z.H., Friesen, T.L. 2010. Identification of Pyrenophora teres f.maculata, Causal Agent of Spot Type Net Blotch of Barley in North Dakota. Plant Disease. 94(4):480.
Friesen, T.L., Faris, J.D. 2010. Characterization Of The Wheat-Stagonospora nodorum Disease System - What Is The Molecular Basis of This Quantitative Necrotrophic Disease Interaction. Canadian Journal of Plant Pathology 32:20-28
Xu, S.S., Friesen, T.L., Chu, C.C., Halley, S., Zhong, S.B., Cai, X., Elias, E.M. 2009. Development of Durum Wwheat Germplasm with Enhanced Resistance to Fusarium Head Blight Derived from Emmer Wheat. Fusarium Head Blight Forum Dec 6-9, 2009; Orlando, Fl. Lexington, KY: University of Kentucky. Pg. 160
Abeysekara, N., Friesen, T.L., Keller, B., Faris, J.D. 2009. Identification and Characterization of a Novel Host-Toxin Interaction in the Wheat - Stagonospora Nodorum Pathosystem. Theoretical and Applied Genetics. 120:117-126
Lu, S., Friesen, T.L. 2009. Genetic Diversity of Polyketide Synthase/Nonribosomal Peptide Synthetase Genes in Isolates of the Barley Net Blotch Fungus Pyrenophora teres f. teres. Meeting Abstract 99:S77
Faris, J.D., Friesen, T.L. 2009. Re-Evaluation of a Tetraploid Wheat Population Indicates That the Tsn1-ToxA Interaction is the Only Factor Governing Stagonospora Nodorum Blotch Susceptibility. Phytopathology. 99:(8) 906-912
Lu, S., Friesen, T.L., Faris, J.D. 2009. Identification of ToxA-Interacting Proteins Suggests a Possible Role for Pathogenesis-Related Protein 1(PR-1) in Mediating Stagonospora Nodorum-wheat Interactions. Meeting Abstract. p. 97.
Chu, C.G., Friesen, T.L., Xu, S.S., Faris, J.D., Kolmer, J.A. 2009. Identification of Novel QTL for Seeding and Adult Plant Leaf Rust Resistance in a Wheat Doubled Haploid Population. Theoretical and Applied Genetics. 119:263-269
Chu, C., Friesen, T.L., Chao, S., Faris, J.D., Xu, S.S. 2008. The concurrence of Stagonospora nodorum blotch resistance with host-selective toxin insensitivity in tetraploid wheat. National Wheat Genomics Conference. p. 9 (NWGC), December 4-6, 2008, Indianapolis, IN
Abu, Q.M., Liu, Z., Faris, J.D., Chao, S., Edwards, M.C., Lai, Z., Franckowiak, J.D., Friesen, T.L. 2008. A region of barley chromosome 6H harbors multiple major genes associated with net type blotch resistance. Theoretical and Applied Genetics. 117:1261-1270
Cai, X., Xu, S.S., Oliver, R.E., Zhang, Q., Stack, R.W., Zhong, S., Friesen, T.L., Halley, S., Elias, E.M. 2008. Alien introgression for FHB resistance in wheat - Challenges and strategies. In: R. Appels, R. Eastwood, E. Lagudah, P. Langridge, M. Mackay, L. McIntye, and P. Sharp (Eds.) Proc. 11th Wheat Genet. Symp., vol. 3. Sydney University Press, Sydney, Australia. Pp 716-718.
Zhang, Z., Friesen, T.L., Simons, K.J., Xu, S.S., Faris, J.D. 2009. Development,Identification and Validation of Markers for Mmarker-Assisted Selection Against the Stagonospora nodorum Toxin Ssensitivity Genes Tsn1 and Snn2 in Wheat. Molecular Breeding,23:35-49.
Friesen, T.L., Liu, Z., Zhang, Z., Solomon, P.S., Oliver, R.P., Faris, J.D. 2008. Characterization of the role of host-selective toxins in the stagonospora nodorum - wheat pathosystem shows an inverse gene-for-gene structure. 7th Mycosphaerella Stagonospora Symposium in Ascona, Switzerland, August 18-22, 2008.
Chu, C., Friesen, T.L., Xu, S.S., Faris, J.D. 2008. Identification of novel tan spot resistance loci beyond the known host-selective toxin insensitivity genes in wheat. Theoretical and Applied Genetics 117:873-881
Reedy, L., Friesen, T.L., Meinhardt, S.W., Chao, S., Faris, J.D. 2008. Genomic analysis of the Snn1 locus on wheat chromosome arm 1BS and the identification of candidate genes. The Plant Genome. 1:55-66
Chu, C., Xu, S.S., Friesen, T.L., Faris, J.D. 2008. Whole Genome Mapping in a Wheat Doubled Haploid Population Using SSRs and TRAPS and the Identification of QTL for Agronomic Traits. Molecular Breeding. 22:251-266
Mergoum, M., Frohberg, R., Rasmussen, J., Friesen, T.L., Hareland, G.A., Simsek, S. 2009. Breeding for CLEARFIELD Herbicide Tolerance: Registration of ‘ND901CL’ Spring Wheat. Journal of Plant Registrations. 3:170-174
Friesen, T.L., Zhang, Z., Solomon, P.S., Oliver, R.P., Faris, J.D. 2008. Genetic characterization of a novel wheat-Stagonospora nodorum host-selective toxin interaction and it role in disease susceptibility. Plant Physiology. 146:682-693
Gu, X., Ren, S., Chu, C., Glover, K., Xu, S.S., Faris, J.D., Friesen, T.L., Ibrahim, A. 2007. Identification of seed dormancy for four populations derived from synthetic hexaploid wheat. Plant and Animal Genome Conference. December 1-2, 2007 Kansas City MO.
Liu, Z., Faris, J.D., Edwards, M.C., Friesen, T.L. 2008. Progress Toward Map-Based Cloning of an Avirulence Gene from Pyrenophora teres f. teres. International Congress of Plant Pathology Abstracts and Proceedings. 90(S2):229
Oliver, R.P., Solomon, P.S., Hane, J., Ferguson-Hunt, M., Mcdonald, B.A., Faris, J.D., Friesen, T.L. 2008. Multiple host-specific toxins, lateral gene transfer and gene loss in the evolution of cereal Pleosporalean pathogens. International Congress of Plant Pathology Abstracts and Proceedings. Torino, Italy, August 24-29, 2008.
Xu, S.S., Oliver, R.E., Cai, X., Friesen, T.L., Halley, S., Elias, E.M. 2007. Searching for new sources of FHB resistance in the relatives of wheat. National Fusarium Head Blight Forum Proceedings. pg. 249 Proceedings of 2007 National Fusarium Head Bligh Forum Dec 2-4, 07 Kansas City MO
Chu, C., Xu, S.S., Friesen, T.L., Faris, J.D. 2007. Whole genome mapping and QTL analysis in a doubled haploid population derived from the cross between a synthetic hexaploid wheat and hard red spring wheat. Meeting Abstract. National Wheat Conference Abstract pg 20.
Faris, J.D., Lu, H., Zhang, Z., Reddy, L., Fellers, J.P., Friesen, T.L. 2008. Genomic analysis of the Tsn1 locus and the identification of candidate genes. Plant and Animal Genome ConferenceXVI abstracts pg. 305
Oliver, R.E., Cai, X., Wang, R., Xu, S.S., Friesen, T.L. 2008. Resistance to Tan Spot and Stagonospora nodorum Blotch in Wheat-Alien Species Derivatives. Plant Disease. 92:150-157.
Ali, S., Friesen, T.L., Meinhardt, S., Rasmussen, J. 2007. A wheat genotype sensitive to Ptr ToxA and resistant to Pyrenophora tritici-repentis (Tan spot) races 1 and 2. Meeting Abstract.
Liu, Z., Faris, J.D., Edwards, M.C., Friesen, T.L. 2006. The initiation of map-based cloning of an avirulence gene from Pyrenophora teres. Meeting Abstract. 24th Fungal Genetics Conference. p. 159.
Oliver, R.P., Solomon, P.S., Hane, J., Tan, K., Lowe, R., Waters, O., Stukenbrock, E.H., Mcdonald, B.A., Friesen, T.L. 2007. Fungal proteins, metabolites and signalling pathways controlling the interaction between wheat and Stagonospora nodorum. Meeting Abstract. XIII International Congress on Molecular Plant-Microbe Interactions, July 21-27, 2007, Sorrento, Italy.
Tai, Y., Bragg, J., Lu, H., Edwards, M.C., Faris, J.D., Friesen, T.L., Meinhardt, S.W. 2007. Functional Characterization of Ptr ToxA and Molecular Identification of its Intracellular Targeting Protein in Wheat. Plant and Animal Genome VX Conference Abstracts. p.
Reddy, L., Friesen, T.L., Meinhardt, S.W., Chao, S., Faris, J.D. 2007. Genomic analysis of the Snn1 locus on the short arm of chromosome 1B in wheat. Plant and Animal Genome VX Conference Abstracts. p. 176.
Faris, J.D., Kumar, S., Friesen, T.L. 2007. Identification of a novel Fusarium head blight resistance QTL on chromosome 7A in tetraploid wheat. Plant and Animal Genome VX Conference Abstracts. p. 179.
Friesen, T.L., Faris, J.D., Oliver, R. 2007. The Stagonospora nodorum-wheat pathosystem is an inverse gene for gene system involving multiple proteinaceous host selective toxins. Plant and Animal Genome VX Conference Abstracts. p. 179.
Friesen, T.L., Lai, Z., Liu, Z., Faris, J.D., Steffenson, B.J. 2006. Genetic mapping of pyrenophora teres avirulence genes. In: Proceedings of the 3rd International Workshop on Barley Leaf Blight. July 23-27, 2005, Edmonton, Canada. p.
Liu, Z., Friesen, T.L., Hua, L., Meinhardt, S.W., Oliver, R., Rassmussen, J.B., Faris, J.D. 2007. The tsn1-toxa interaction in the wheat-stagonospora nodorum pathosystem parallels that of the wheat-tan spot system. Genome. 49:1265-1273.
Oliver, S.S., Xu, S.S., Stack, R.W., Friesen, T.L., Jin, Y., Cai, X. 2006. Molecular cytogenetic characterization of four partial wheat-thinopyrum ponticum amphiploids and their reactions to fusarium head blight, tan spot, and stagonospora nodorum blotch. Theoretical and Applied Genetics. 112:1473-1479.
Friesen, T.L., Faris, J.D., Lai, Z., Steffenson, B.J. 2006. Identification and chromosomal location of major genes for resistance to Pyrenophora teres in a doubled-haploid barley population. Genome. 49:855-859
Lu, H., Fellers, J.P., Friesen, T.L., Faris, J.D. 2006. Genomic analysis and marker devlopment for the TSN1 locus in wheat using bin-mapped ests and flanking bac contigs. Theoretical and Applied Genetics. 112:1132-142.
Reddy, L., Friesen, T.L., Meinhardt, S.W., Faris, J.D. 2006. High-resolution mapping and chromosome walking at the snn1 locus on chromosome 1b in wheat [abstract]. Plant and Animal Genome XIV Conference. Abstract No. P349:188.
Friesen, T.L., Faris, J.D., Meinhardt, S.W. 2005. A new host selective toxin produced by stagonospora nodorum and its significance in disease using a segregating wheat mapping population. American Phytopathological Society Abstracts. Vol. 95:S32.
Lai, Z., Xu, S.S., Friesen, T.L. 2005. Karotype analysis of Pyrenophora teres f. teres using telomere analysis pulse field gel electrophoresis and the germ tube burst method. American Phytopathological Society Abstracts. Vol. 95:S55.
Friesen, T.L., Ali, S., Klein, K.K., Rasmussen, J.B. 2005. Population genetic analysis of a global collection of pyrenophora tritici-repentis casual agent of tan spot of wheat.. Phytopathology. 95:1144-1150.
Liu, Z., Anderson, J.A., Hu, J., Friesen, T.L., Rasmussen, J.B., Faris, J.D. 2005. A wheat intervarietal genetic linkage map based on microsatellite and target region amplified polymorphism markers and its utility for detecting quantitative trait loci. Theoretical and Applied Genetics. Vol. 111:792-794.
Faris, J.D., Friesen, T.L. 2005. Identification of quantitative trait loci for race-nonspecific resistance to tan spot in wheat. Theoretical and Applied Genetics. Vol. 111:386-392.
Xu, S.S., Friesen, T.L., Cai, X. 2004. Sources and genetic control of resistance to stagonospora nodorum blotch in wheat. in: research signpost/recent research development in gentics and plant breeding.. Book Chapter. Vol. 1: 449-469
Liu, Z., Friesen, T.L., Meinhardt, S.W., Rasmussen, J.B., Faris, J.D. 2005. Mapping of toxin sensitivity and QTL analysis of seedling resistance to stagonospora nodorum blotch in an intervarietal hard red spring wheat population. Plant and Animal Genome Abstracts. p. 342.
Liu, Z., Friesen, T.L., Rasmussen, J.B., Hu, J., Faris, J.D. 2005. A hard red spring wheat intervarietal genetic linkage map constructed using microsatellite and target region amplification polymorphism (TRAP) markers.Plant and Animal Genome Abstracts. p.351.
Lu, H., Fellers, J.P., Friesen, T.L., Meinhardt, S.W., Haen, K.M., Faris, J.D. 2005. Towards positional cloning of the Tsn1 gene in wheat. Plant and Animal Genome Abstracts. p. 359.
Friesen, T.L., Faris, J.D., Steffenson, B.J. 2004. Mapping of a major net blotch resistance gene in the Q21861 x SM89010 doubled haploid population.. American Phytopathological Society Abstracts. Vol. 91:532
Xu, S.S., Friesen, T.L., Mujeeb-Kazi, A. 2004. Seedling resistance to tan spot and Stagonospora nodorum blotch in synthetic hexaploid wheats. Crop Science. Vol. 44:2238-2245.
Friesen, T.L., Faris, J.D. 2004. Molecular mapping of resistance to pyrenophora tritici-repentis race 5 and sensitivity to ptr toxb in wheat.. Theoretical and Applied Genetics. Vol. 109:464-471.
Liu, Z., Friesen, T.L., Faris, J.D., Meinhardt, S., Ali, S., Rasmussen, J. 2003. Mapping of wheat sensitivity to a partially purified host-selective toxin produced by Stagonospora nodorum. Proceedings of the 6th International Symposium on Septoria/Stagonospora Diseases of Cereals. Dec. 8-12, 2003, Tunis, Tunisia. p. 139-142.
Haen, K.M., Lu, H., Friesen, T.L., Faris, J.D. 2004. Genomic targeting and high-resolution mapping of the Tsn1 gene in wheat. 12th Plant and Animal Genome Abstracts. p. 438.
Lu, H., Haen, K., Fellers, J.P., Friesen, T.L., Heinhardt, S., Faris, J.D. 2004. The construction of a BAC contig for chromosome walking at the Tsn1 locus in wheat.. Plant and Animal Genome Abstracts. p. 180.
Liu, Z., Faris, J.D., Meinhardt, S., Ali, S., Rasmussen, J., Friesen, T.L. 2004. Genetic and physical mapping of a gene conditioning sensitivity in wheat to a partially purified host-selective toxin by stagonospora nodorum.. Plant and Animal Genome Abstracts. p.185.
FRIESEN, T.L., ALI, S., STACK, R.W., FRANCL, L.J., RASMUSSEN, J.B. RAPID AND EFFICIENT PRODUCTION OF THE PYRENOPHORA TRITICI-REPENTIS TELEOMORPH.. CANADIAN JOURNAL OF BOTANY. 2003. VOL. 81:890-895.
ALI, S., RASMUSSEN, J., FRIESEN, T.L., MERGOUM, M., ELIAS, E. REACTION OF HARD RED SPRING AND DURUM WHEAT BREEDING LINES TO PTR TOXA AND PYRENOPHORA TRITICI-REPENTIS.. AMERICAN PHYTOPATHOLOGICAL SOCIETY ABSTRACTS. 2003. V. 93(6) p. S3.
ALI, S., CARTWRIGHT, T., FRIESEN, T.L., RASMUSSEN, J., MILUS, G. NOVEL PYRENOPHORA TRITICI-REPENTIS ISOLATES FROM ARKANSAS WHEAT. AMERICAN PHYTOPATHOLOGICAL SOCIETY ABSTRACTS. 2003. V. 93(6) p. S3.
WEILAND, J.J., FRIESEN, T.L. FUNCTIONAL GENOMICS OF CERCOSPORA BETICOLA. ABSTRACTS OF JOINT MEETING OF INTERNATIONAL INSTITUTE FOR BEET RESEARCH AND THE AMERICAN SOCIETY OF SUGARBEET TECHNOLOGISTS. 2003. ABSTRACT P. 56.
FRIESEN, T.L., ALI, S., KIANIAN, S., FRANCL, L.J., RASMUSSEN, J.B. ROLE OF HOST SENSITIVITY TO PTR TOXA IN DEVELOPMENT OF TAN SPOT OF WHEAT.. PHYTOPATHOLOGY. 2003. V. 93(4). p. 397-401.