Skip to main content
ARS Home » Plains Area » Fargo, North Dakota » Edward T. Schafer Agricultural Research Center » Cereal Crops Research » Research » Publications at this Location » Publication #377244

Research Project: Host-Pathogen Interactions in Fungal Diseases of Wheat and Barley

Location: Cereal Crops Research

Title: Understanding the plant-pathogen interaction associated with septoria nodorum blotch of wheat

item KARIYAWASAM, GAYAN - North Dakota State University
item Friesen, Timothy

Submitted to: Book Chapter
Publication Type: Book / Chapter
Publication Acceptance Date: 2/19/2021
Publication Date: N/A
Citation: N/A

Interpretive Summary: .

Technical Abstract: Parastagonospora nodorum, the causal agent of septoria nodorum blotch (SNB), induces significant yield losses by affecting leaves and glumes of wheat. The lack of understanding of the underlying mechanism of disease is complex, hindering resistance breeding efforts. Research performed in the last two decades has filled a large knowledge gap concerning how the pathogen targets wheat to induce disease. The wheat-P. nodorum interaction involves necrotrophic effectors (NEs) that interact with dominant wheat sensitivity/susceptibility gene products to cause disease. Nine such interactions have been reported. Molecular and functional characterization of three NEs and two host sensitivity genes has revealed that the pathogen targets wheat sensitivity genes, manipulating the plant immune system. With the advancements in genomics, rapidity of the molecular cloning and functional validation of genes in both the host and pathogen has increased significantly, expanding our understanding of this pathosystem, providing the tools to breed for effective resistance against SNB.