Diuraphis noxia

Clement SL, Wilson AD, Lester DG, Davitt CM. Fungal endophytes of wild barley and their effects on Diuraphis noxia populations development. Entomol Exp Appl 82 275-281, 1997. 

Dahl et al. demonstrated that the release of methanol dramatically increases and can be substantially greater than the release of -2-hexenal when Manduca sexta larvae attacks Nicotiana attenuata plants [54]. Similar results were also obtained during monitoring VOCs induced by Euphydryas aurinia caterpillars feeding on Succisa pratemis leaves [55]. The emission of ethanol, acetaldehyde, acetic acid, ethyl acetate, 2-butanone, 23,-butanedione, and acetone from Arabidopsis roots has been identified by both PTR-MS and GC-MS [56]. The rapid release of 1,8-cineole and a monoterpene was demonstrated after compatible interactions of Pseudomonas syringae DC3000 and Diuraphis noxia with roots. But mechanical injuries to roots did not release any wound-induced VOCs, and the VOCs released were basically the same for the infected and noninfected roots. 

Alternaria brassicola) did lead to a change in the root volatile emissions. Also, when root was treated with aphids (Diuraphis noxia), specific VOCs were released, indicating that this aphid may be a compatible pest for Arabidopsis roots. 

The best-known recent aphid damage is that of Russian Wheat aphid, Diuraphis noxia which was first discovered in Texas in 1986 but has now spread to 16 million of the total of 59 milhon wheat and small grain acres in the Great Plains states causing 37,000,000 annual crop loss (5). Due to the widespread use of synthetic pyrethroids killing beneficial insect predators, aphids are becoming increasingly important on cotton. 

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