Enhanced heat tolerance of viral-infected aphids leads to niche expansion and reduced interspecific competition

Autor(es):Mostrar menos -

Porras, Mitzy F. ^[1] ; Navas, Carlos A. ^[2] ; Marden, James H. ^{[1, 3]} ; Mescher, Mark C. ^{[3, 4]} ; De Moraes, Consuelo M. ^{[3, 4]} ; Pincebourde, Sylvain ^[5] ; Sandoval-Mojica, Andres ^[6] ; Raygoza-Garay, Juan A. ^[7] ; Holguin, German A. ^[8] ; Rajotte, Edwin G. ^[1] ; Carlo, Tomas A. ^[3]

Afiliação do(s) autor(es)

^[1] Penn State Univ, Dept Entomol, University Pk, PA 16802 - USA

^[2] Univ Sao Paulo, Inst Biociencias, Dept Physiol, BR-05508090 Sao Paulo - Brazil

^[3] Penn State Univ, Dept Biol, University Pk, PA 16802 - USA

^[4] Swiss Fed Inst Technol, Dept Environm Syst Sci, CH-8092 Zurich - Switzerland

^[5] Univ Tours, Inst Rech Biol & Insecte, UMR 7261, F-37200 Tours - France

^[6] Univ Florida, Citrus Res & Educ Ctr, Lake Alfred, FL 33850 - USA

^[7] Univ Toronto, Dept Med, Toronto, ON - Canada

^[8] Univ Tecnol Pereira, Dept Ingn Elect, Pereira - Colombia

• Tipo de documento: Artigo Científico
• Fonte: NATURE COMMUNICATIONS; v. 11, n. 1 MAR 4 2020.
• Citações Web of Science: 6

Resumo

Vector-borne pathogens are known to alter the phenotypes of their primary hosts and vectors, with implications for disease transmission as well as ecology. Here we show that a plant virus, barley yellow dwarf virus, increases the surface temperature of infected host plants (by an average of 2 degrees C), while also significantly enhancing the thermal tolerance of its aphid vector Rhopalosiphum padi (by 8 degrees C). This enhanced thermal tolerance, which was associated with differential upregulation of three heat-shock protein genes, allowed aphids to occupy higher and warmer regions of infected host plants when displaced from cooler regions by competition with a larger aphid species, R. maidis. Infection thereby led to an expansion of the fundamental niche of the vector. These findings show that virus effects on the thermal biology of hosts and vectors can influence their interactions with one another and with other, non-vector organisms. (AU)

• Processo FAPESP: 14/16320-7 - Impactos das mudanças climáticas e ambientais sobre a fauna: uma abordagem integrativa
• Beneficiário: Carlos Arturo Navas Iannini
• Modalidade de apoio: Auxílio à Pesquisa - Programa de Pesquisa sobre Mudanças Climáticas Globais - Temático