title: Elevated CO2 impacts bell pepper growth with consequences to Myzus persicae life history, feeding behaviour and virus transmission ability.
abstract: Increasing atmospheric carbon dioxide (CO2) impacts plant growth and metabolism. Indirectly, the performance and feeding of insects is affected by plant nutritional quality and resistance traits. Life history and feeding behaviour of Myzus persicae were studied on pepper plants under ambient (aCO2, 400 ppm) or elevated CO2 (eCO2, 650 ppm), as well as the direct impact on plant growth and leaf chemistry. Plant parameters were significantly altered by eCO2 with a negative impact on aphid's life history. Their pre-reproductive period was 11% longer and fecundity decreased by 37%. Peppers fixed significantly less nitrogen, which explains the poor aphid performance. Plants were taller and had higher biomass and canopy temperature. There was decreased aphid salivation into sieve elements, but no differences in phloem ingestion, indicating that the diminished fitness could be due to poorer tissue quality and unfavourable C:N balance, and that eCO2 was not a factor impeding feeding. Aphid ability to transmit Cucumber mosaic virus (CMV) was studied by exposing source and receptor plants to ambient (427 ppm) or elevated (612 ppm) CO2 before or after virus inoculation. A two-fold decrease on transmission was observed when receptor plants were exposed to eCO2 before aphid inoculation when compared to aCO2.
authors.affiliation: Institute of Agricultural Sciences. Spanish National Research Council. Calle Serrano 115 dpdo, 28006 Madrid, Spain.|Grains Innovation Park. Department of Economic Development, Jobs, Transport and Resources. 110 Natimuk Road, Horsham VIC 3400, Australia.
authors.forename: Beatriz
authors.initials: B
authors.lastname: Dáder
authors.affiliation: Institute of Agricultural Sciences. Spanish National Research Council. Calle Serrano 115 dpdo, 28006 Madrid, Spain.
authors.forename: Alberto
authors.initials: A
authors.lastname: Fereres
authors.affiliation: Institute of Agricultural Sciences. Spanish National Research Council. Calle Serrano 115 dpdo, 28006 Madrid, Spain.
authors.forename: Aránzazu
authors.initials: A
authors.lastname: Moreno
authors.affiliation: Grains Innovation Park. Department of Economic Development, Jobs, Transport and Resources. 110 Natimuk Road, Horsham VIC 3400, Australia.
authors.forename: Piotr
authors.initials: P
authors.lastname: Trębicki
mesh_terms: D000818:Animals; D001042:Aphids / Q000187:drug effects* / Q000821:virology; D002212:Capsicum / Q000187:drug effects* / Q000469:parasitology / Q000821:virology; D002245:Carbon Dioxide / Q000494:pharmacology*; D017799:Cucumovirus / Q000187:drug effects / Q000254:growth & development / Q000472:pathogenicity; D005247:Feeding Behavior / Q000187:drug effects*; D005298:Fertility / Q000187:drug effects; D006790:Host-Parasite Interactions; D054884:Host-Pathogen Interactions; D009584:Nitrogen / Q000378:metabolism; D052585:Phloem / Q000187:drug effects* / Q000469:parasitology / Q000821:virology; D010935:Plant Diseases / Q000469:parasitology / Q000517:prevention & control / Q000821:virology; D018515:Plant Leaves / Q000187:drug effects* / Q000469:parasitology / Q000821:virology
chemical_list: D002245:Carbon Dioxide; D009584:Nitrogen