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ARS Home Plains Area Fargo, North Dakota Edward T. Schafer Agricultural Research Center Cereal Crops Research Research Publications at this Location





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Title:   Author  item
                                            Faris, Justinitem
                                            LU, H - NORTH DAKOTA STATE UNIVitem
                                            ZHANG, Z - NORTH DAKOTA STATE UNIVitem
                                            LIU, Z - NORTH DAKOTA STATE UNIVitem
                                            Xu, Stevenitem
                                            CHU, C - NORTH DAKOTA STATE UNIVitem
                                            ABEYSEKARA, N - NORTH DAKOTA STATE UNIVitem
                                            Fellers, Johnitem
                                            CLOUTIER, S - CEREAL RES. CANADAitem
                                            KELLER, B - UNIV OF ZURICHitem
                                            Scofield, Steven

                                                         - *Steve*item
                                            Friesen, Timothy
  Submitted to: International Wheat Conference Proceedings
                                    Publication Type: Proceedings
                                    Publication Acceptance Date: 5/30/2008
                                    Publication  Date: 9/24/2008
                                    Citation: Faris, J.D., Lu, H.J., Zhang, Z., Liu, Z.H., Xu, S.S., Chu, C.G., Abeysekara, N., Fellers, J.P., Cloutier, S., Keller, B., Scofield, S.R., Friesen, T.L. 2008. Genetics of host-pathogen interactions in the wheat-Stagonospora nodorum pathosystem. International Wheat Conference Proceedings. Australia Aug 24-29Interpretive Summary:
                                Technical Abstract: Stagonospora nodorum causes the disease Stagonospora nodorum blotch (SNB) in wheat. S. nodorum produces numerous host-selective toxins (HSTs), all of which interact with dominant host sensitivity genes to cause disease. These host-toxin interactions are mirror images of classical gene-for-gene interactions. The effects of compatible host-toxin interactions in the development of
SNB are largely additive, and they play important roles in disease susceptibility of seedlings as well as adult plants. One of the first S. nodorum HSTs was SnToxA,which was recently involved in a lateral transfer from S. nodorum to the tan spot pathogen. The map-based cloning of the Tsn1 locus on chromosome 5B, which confers sensitivity to SnToxA, reveals a complex evolutionary history of the locus when compared to rice, Brachypodium, and the homoeologous region of chromosome 5A. The isolation of Tsn1 will allow the molecular characterization of interactions in the wheat-S. nodorum pathosystem, which may be an excellent toxinbased
model for other necrotrophic pathosystems.


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