Rhopalosiphum padi (Hemiptera: Aphididae) Responses to Volatile Cues from Barley Yellow Dwarf Virus-Infected Wheat

作者: Karla J. Medina-Ortega , Nilsa A. Bosque-Pérez , Esther Ngumbi , Edgardo S. Jiménez-Martínez , Sanford D. Eigenbrode

DOI: 10.1603/022.038.0337

关键词:

摘要: In choice bioassays, Rhopalosiphum padi L. nonviruliferous apterae preferentially locate near volatile organic compounds (VOCs) emitted from Barley yellow dwarf virus (BYDV)infected wheat plants compared with VOCs noninfected plants. However, the specific responsible for R. responses are unknown. It is unclear also if to BYDV-infected caused by arrestment or attraction. Additionally, of viruliferous and alate have not been examined. were studied through emigration, immigration, settling laboratory bioassays using Two genotypes, virus-susceptible Lambert virus-resistant Lambertderived transgenic 103.1J expressing BYDV-PAV coat protein gene, evaluated. a bioassay, alates settled on 103.1J. Responses virus-infected, noninfected, sham-inoculated (exposed aphids) examined in separate bioassays. A paper leaf model served as control. Immigration was significantly lower toward model, but no significant differences observed among plant treatments. Nonviruliferous exhibited emigration treatments, suggesting occurred. preferred immigrate Lambert. tested applying models at concentrations designed mimic those present headspace immigrated greater numbers individually treated nonanal, (Z)-3-hexenyl acetate, decanal, caryophyllene, undecane than that controls synthetic blends made Results suggest attraction rather arrestment.

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