T
Timothy L. Friesen
Researcher at North Dakota State University
Publications - 169
Citations - 8665
Timothy L. Friesen is an academic researcher from North Dakota State University. The author has contributed to research in topics: Population & Gene. The author has an hindex of 50, co-authored 155 publications receiving 7496 citations. Previous affiliations of Timothy L. Friesen include Dakota State University & Agricultural Research Service.
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Journal ArticleDOI
Emergence of a new disease as a result of interspecific virulence gene transfer.
Timothy L. Friesen,Eva H. Stukenbrock,Zhaohui Liu,Steven W. Meinhardt,Hua Ling,Justin D. Faris,Jack B. Rasmussen,Peter S. Solomon,Bruce A. McDonald,Richard P. Oliver +9 more
TL;DR: Evidence that a gene encoding a critical virulence factor was transferred from one species of fungal pathogen to another probably occurred just before 1941, creating a pathogen population with significantly enhanced virulence and leading to the emergence of a new damaging disease of wheat.
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A unique wheat disease resistance-like gene governs effector-triggered susceptibility to necrotrophic pathogens
Justin D. Faris,Zengcui Zhang,Huangjun Lu,Shunwen Lu,Leela Reddy,Sylvie Cloutier,John P. Fellers,Steven W. Meinhardt,Jack B. Rasmussen,Steven S. Xu,Richard P. Oliver,Kristin Simons,Timothy L. Friesen +12 more
TL;DR: The cloning of Tsn1 was found to have disease resistance gene-like features, including S/TPK and NBS-LRR domains, which suggests that these necrotrophic pathogens may thrive by subverting the resistance mechanisms acquired by plants to combat other pathogens.
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Host-specific toxins: effectors of necrotrophic pathogenicity.
TL;DR: Host‐specific toxins (HSTs) are defined as pathogen effectors that induce toxicity and promote disease only in the host species and only in genotypes of that host expressing a specific and often dominant susceptibility gene.
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The cysteine rich necrotrophic effector SnTox1 produced by Stagonospora nodorum triggers susceptibility of wheat lines harboring Snn1.
Zhaohui Liu,Zengcui Zhang,Justin D. Faris,Richard P. Oliver,Robert A. Syme,Megan C. McDonald,Bruce A. McDonald,Peter S. Solomon,Shunwen Lu,Weilin L. Shelver,Steven S. Xu,Timothy L. Friesen,Timothy L. Friesen +12 more
TL;DR: It is concluded that necrotrophic fungal pathogens utilize small effector proteins to exploit plant resistance pathways for their colonization, which provides important insights into the molecular basis of the wheat-S.
Journal ArticleDOI
Genetic and Physical Mapping of a Gene Conditioning Sensitivity in Wheat to a Partially Purified Host-Selective Toxin Produced by Stagonospora nodorum.
Zhaohui Liu,Justin D. Faris,Steven W. Meinhardt,Shaukat Ali,Jack B. Rasmussen,Timothy L. Friesen +5 more
TL;DR: This is the first report identifying a putative proteinaceous HST from S. nodorum and the chromosomal location of a host gene conferring sensitivity, and indicates that Snn1 lies within a major gene-rich region on 1BS.