Biochemistry, Biophysics, and Structural Biology Commons^™

Physiological Responses Of Resistant And Susceptible Barley, Hordeum Vulgare To The Russian Wheat Aphid, Diurpahis Noxia (Mordvilko), Andrea R. Gutsche, Tiffany M. Heng-Moss, Leon G. Higley, Gautam Sarath, Dolores W. Mornhinweg

Gautam Sarath Publications

Knowledge of the physiological responses of barley, Hordeum vulgare L., to the Russian wheat aphid, Diuraphis noxia (Mordvilko) (Hemiptera: Aphididae) is critical to understanding the defense response of barley to aphid injury and identifying resistance mechanisms. This study documented the impact of D. noxia feeding on resistant (‘Sidney’) and susceptible (‘Otis’) barley through chlorophyll fluorescence measurements, chlorophyll content, and carbon assimilation (A–C_i) curves recorded at 1, 3, 6, 10, and 13 days after aphid introduction. All chlorophyll fluorescence parameters evaluated were similar between aphid-infested and control plants for both cultivars. A–C_i curves showed that D. noxia feeding …