Ward TJ

References (3)

Title : Multilocus genotyping and molecular phylogenetics resolve a novel head blight pathogen within the Fusarium graminearum species complex from Ethiopia - O'Donnell_2008_Fungal.Genet.Biol_45_1514
Author(s) : O'Donnell K , Ward TJ , Aberra D , Kistler HC , Aoki T , Orwig N , Kimura M , Bjornstad S , Klemsdal SS
Ref : Fungal Genet Biol , 45 :1514 , 2008
Abstract : A survey of Fusarium head blight (FHB)-contaminated wheat in Ethiopia recovered 31 isolates resembling members of the Fusarium graminearum species complex. Results of a multilocus genotyping (MLGT) assay for FHB species and trichothecene chemotype determination suggested that 22 of these isolates might represent a new species within the Fg complex. Phylogenetic analyses of multilocus DNA sequence data resolved the 22 Ethiopian isolates as a novel, phylogenetically distinct species. The new species also appears to be novel in that MLGT probe data and sequence analysis of both ends of the TRI-cluster identified 15ADON and NIV recombination blocks, documenting inter-chemotype recombination involving the chemotype-determining genes near the ends of the TRI-cluster. Results of pathogenicity experiments and analyses of trichothecene mycotoxins demonstrated that this novel Fg complex species could induce FHB on wheat and elaborate 15ADON in planta. Herein the FHB pathogen from Ethiopia is formally described as a novel species.
ESTHER : O'Donnell_2008_Fungal.Genet.Biol_45_1514
PubMedSearch : O'Donnell_2008_Fungal.Genet.Biol_45_1514
PubMedID: 18824240
Gene_locus related to this paper: gibze-TRI8

Title : The Fusarium graminearum genome reveals a link between localized polymorphism and pathogen specialization - Cuomo_2007_Science_317_1400
Author(s) : Cuomo CA , Guldener U , Xu JR , Trail F , Turgeon BG , Di Pietro A , Walton JD , Ma LJ , Baker SE , Rep M , Adam G , Antoniw J , Baldwin T , Calvo S , Chang YL , Decaprio D , Gale LR , Gnerre S , Goswami RS , Hammond-Kosack K , Harris LJ , Hilburn K , Kennell JC , Kroken S , Magnuson JK , Mannhaupt G , Mauceli E , Mewes HW , Mitterbauer R , Muehlbauer G , Munsterkotter M , Nelson D , O'Donnell K , Ouellet T , Qi W , Quesneville H , Roncero MI , Seong KY , Tetko IV , Urban M , Waalwijk C , Ward TJ , Yao J , Birren BW , Kistler HC
Ref : Science , 317 :1400 , 2007
Abstract : We sequenced and annotated the genome of the filamentous fungus Fusarium graminearum, a major pathogen of cultivated cereals. Very few repetitive sequences were detected, and the process of repeat-induced point mutation, in which duplicated sequences are subject to extensive mutation, may partially account for the reduced repeat content and apparent low number of paralogous (ancestrally duplicated) genes. A second strain of F. graminearum contained more than 10,000 single-nucleotide polymorphisms, which were frequently located near telomeres and within other discrete chromosomal segments. Many highly polymorphic regions contained sets of genes implicated in plant-fungus interactions and were unusually divergent, with higher rates of recombination. These regions of genome innovation may result from selection due to interactions of F. graminearum with its plant hosts.
ESTHER : Cuomo_2007_Science_317_1400
PubMedSearch : Cuomo_2007_Science_317_1400
PubMedID: 17823352
Gene_locus related to this paper: fusof-f9fxz4 , gibze-a8w610 , gibze-b1pdn0 , gibze-i1r9e6 , gibze-i1rda9 , gibze-i1rdk7 , gibze-i1rec8 , gibze-i1rgs0 , gibze-i1rgy0 , gibze-i1rh52 , gibze-i1rhi8 , gibze-i1rig9 , gibze-i1rip5 , gibze-i1rpg6 , gibze-i1rsg2 , gibze-i1rv36 , gibze-i1rxm5 , gibze-i1rxp8 , gibze-i1rxv5 , gibze-i1s1u3 , gibze-i1s3j9 , gibze-i1s6l7 , gibze-i1s8i8 , gibze-i1s9x4 , gibze-ppme1 , gibze-q4huy1 , gibze-i1rg17 , gibze-i1rb76 , gibze-i1s1m7 , gibze-i1s3z6 , gibze-i1rd78 , gibze-i1rgl9 , gibze-i1rjp7 , gibze-i1s1q6 , gibze-i1ri35 , gibze-i1rf76 , gibze-i1rhp3 , gibza-a0a016pda4 , gibza-a0a016pl96 , gibze-i1rjb5 , gibze-i1rkc4 , gibze-a0a1c3ylb1 , gibze-gra11 , gibze-fsl2

Title : The trichothecene biosynthesis gene cluster of Fusarium graminearum F15 contains a limited number of essential pathway genes and expressed non-essential genes - Kimura_2003_FEBS.Lett_539_105
Author(s) : Kimura M , Tokai T , O'Donnell K , Ward TJ , Fujimura M , Hamamoto H , Shibata T , Yamaguchi I
Ref : FEBS Letters , 539 :105 , 2003
Abstract : We report for the first time the complete structure and sequence of the trichothecene biosynthesis gene cluster (i.e. Tri5-cluster) from Fusarium graminearum F15, a strain that produces 3-acetyldeoxynivalenol (3-ADON). A putative tyrosinase and polysaccharide deacetylase gene flank the Tri5-cluster: the number of pathway genes between them is less than half the total number of steps necessary for 3-ADON biosynthesis. In comparison with partial Tri5-cluster sequences of strains with 15-acetyldeoxynivalenol and 4-acetylnivalenol chemotypes, the Tri5-cluster from strain F15 contains three genes that are apparently unnecessary for the biosynthesis of 3-ADON (i.e. Tri8 and Tri3, which are expressed, and pseudo-Tri13, which is not expressed). In addition, the Tri7 gene was missing from the cluster. Recombinant TRI3 protein showed limited trichothecene C-15 acetylase activity. In contrast, recombinant TRI8 protein displayed no C-3 deacetylase activity, suggesting that the loss or alteration of function contribute directly to the chemotype difference.
ESTHER : Kimura_2003_FEBS.Lett_539_105
PubMedSearch : Kimura_2003_FEBS.Lett_539_105
PubMedID: 12650935
Gene_locus related to this paper: gibza-Q8J2V5