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Title:   Author  item
                                            Vaughan, Marthaitem
                                            CUPERLOVIC-CULF, MIROSLAVA - National Research Council - Canadaitem
                                            Vermillion, Karlitem
                                            Teresi, Jenniferitem
                                            McCormick, Susan
  Submitted to: Meeting Abstract
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 7/21/2016
                                    Publication  Date: 7/21/2016
                                    Citation: Vaughan, M.M., Cuperlovic-Culf, M., Vermillion, K., Teresi, J.M., McCormick, S.P. 2016. Elevated [CO2] compromises both Type I and Type II wheat resistance to Fusarium head blight. Meeting Abstract.Interpretive Summary:
                                Technical Abstract: Fusarium head blight (FHB) is one of the world’s most devastating wheat diseases, and results in significant yield loss and contamination of grain with harmful mycotoxins called trichothecenes. Despite emerging risks of increased mycotoxin contamination in food and feed associated with climate change, little is known about how rising [CO2] will influence natural wheat resistance mechanisms against Fusarium graminearum, the primary etiological agent of FHB. In this study the defense response of wheat plants grown at ambient (400 ppm) [CO2] and elevated (800 ppm) [CO2] was evaluated and compared. Both Type I, resistance to initial infection, and Type II, resistance to Fusarium spread throughout the wheat head, were compromised at elevated (800 ppm) [CO2]. The increase in disease was accompanied by increased pathogen biomass and trichothecene contamination.


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