Memorias de investigación
Communications at congresses:
Assessing the impact of future climate on the interactions between wheat, viruses, aphids and their natural enemies
Year:2019

Research Areas
  • Agriculture

Information
Abstract
Carbon dioxide (CO2), the principal greenhouse gas behind global warming, has increased significantly since preindustrial era from 278 ppm to over 400 ppm in 2018. According to the RCP6.0 future climate scenario proposed by IPCC, atmospheric CO2 concentration will continue to rise, reaching 720-1000 ppm and increasing global temperature to over 2.2 (1.4-3.1) ºC by 2100. Climate change impacts crop production, pest and disease pressure, yield stability and therefore, food security. By using plant growth chambers, we investigated the effects of two different climate scenarios, current climate (CO2 = 400 ppm and temperature = 20 ºC) and future climate (CO2 = 800 ppm and temperature =22 ºC), on the interactions between wheat; Barley yellow dwarf virus; the bird cherry-oat aphid (Rhopalosiphum padi), an important virus vector; and its natural enemy, the parasitic wasp (Aphidius colemani). We examined plant physiology and biochemistry; aphid development and offspring production; and parasitoid performance (development, mummification and parasitism rate). Our results show that future climate will affect plant phenology, biomass and biochemistry of both non-infected and virus infected plants, which in turn will affect the aphid pest and its parasitoid. Under future climate, aphid offspring production and development time will decrease on non-infected plants. On BYDV-infected plants, aphid offspring production will decrease but not development time. Parasitism rate remains unchanged under future climate, although parasitoid development time decreases on non-infected plants. Decreased aphid offspring production would indicate lower pest population levels in the future but might be offset by shorter development time, therefore more pest generations over the crop growing season. These research findings emphasize the intricacy of the interactions between plants, insects and viruses under climate change and their implications for epidemiology of plant diseases.
International
Si
Congress
3rd Agriculture and Climate Change Conference
960
Place
Budapest, Hungría
Reviewers
Si
ISBN/ISSN
00-0000-000-0
Start Date
24/03/2019
End Date
26/03/2019
From page
0
To page
0
3rd Agriculture and Climate Change Conference
Participants

Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Manejo Integrado de Plagas
  • Departamento: Producción Agraria