Physiological and Biochemical Responses of Resistant and Susceptible Wheat to Injury by Russian Wheat Aphid

Physiological and biochemical responses of resistant and susceptible wheat to injury by Russian wheat aphid.

We examined the physiological and biochemical responses of resistant ('Halt' and 'Prairie Red') and susceptible ('TAM 107') wheat, Triticum aestivum L., to injury by the Russian wheat aphid, Diuraphis noxia (Mordvilko). Photosynthetic capacity was evaluated by measuring assimilation/internal CO2 (A/Ci) curves, chlorophyll fluorescence, chlorophyll, and nonstructural carbohydrate content. Total ...

Glycoproteins from Russian wheat aphid infested wheat induce defence responses.

Elicitors are molecules which can induce the activation of plant defence responses. Elicitor activity of intercellular wash fluid from Russian wheat aphid, Diuraphis noxia (Mordvilko) infested resistant (cv Tugela DN), and susceptible (cv Tugela), wheat (Triticum aestivum L.), was investigated. Known Russian wheat aphid resistance related responses such as peroxidase and beta-1,3-glucanase acti...

PHYSIOLOGICAL ECOLOGY Salivary Proteins of Russian Wheat Aphid (Hemiptera: Aphididae)

Salivary secretions play critical roles in aphidÐhost plant interactions and are responsible for damage associated with aphid feeding. The objectives of this study were to evaluate aspects of salivationand the salivaryconstituentsofDiuraphis noxia(Hemiptera:Aphididae). Salivaryproteins were isolated and compared from three aphid probed diets: pure water, 15% sucrose, or amino acids (100 mM seri...

Physiological responses of resistant and susceptible barley, <i>Hordeum vulgare</i> to the Russian wheat aphid, <i>Diurpahis noxia</i> (Mordvilko)

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 fl...

Evaluation of wheat (triticum SPP.) resistance to the russian wheat aphid (diuraphis noxia mordvilko)