|ANDERSON, JAMES - University Of Minnesota|
|Hojilla-Evangelista, Milagros - Mila|
|Dunn, Robert - Bob|
Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 3/22/2021
Publication Date: 7/21/2021
Citation: Hay, W.T., Anderson, J.A., Mccormick, S.P., Berhow, M.A., Bowman, M.J., Hojillaevangelist, M.P., Dunn, R.O., Vaughan, M.M. 2021. Rising CO2 more severely impacts FHB moderately resistant HRSW compared to susceptible cultivars. Meeting Abstract. American Society of Plant Biologists: Plant Biology 2021 Worldwide Summit. July 17-19, 2021, Virtual.
Technical Abstract: Rising carbon dioxide (CO2) can change the nutritional content of wheat and increase the severity of Fusarium head blight (FHB), a devastating fungal disease of wheat that reduces yield and contaminates grain with harmful mycotoxins. At elevated CO2, FHB susceptible and moderately resistant hard red spring wheat had disproportionate losses in nutritional content, with moderately resistant cultivars more severely impacted. Decreases in the nutritional content of wheat may provide a pathogenic advantage to the fungus, threatening global food safety and security. Furthermore, moderately resistant wheat had significantly greater increases in plant height at elevated CO2, which may increase lodging risk. Declining grain quality and diminished efficacy of FHB resistance factors may deter wheat growers from choosing moderately resistant cultivars. Therefore, FHB control strategies should consider the climate resilience of wheat nutritional content.