TY - JOUR
T1 - Enhanced heat tolerance of viral-infected aphids leads to niche expansion and reduced interspecific competition
AU - Porras, Mitzy F.
AU - Navas, Carlos A.
AU - Marden, James H.
AU - Mescher, Mark C.
AU - De Moraes, Consuelo M.
AU - Pincebourde, Sylvain
AU - Sandoval-Mojica, Andrés
AU - Raygoza-Garay, Juan A.
AU - Holguin, German A.
AU - Rajotte, Edwin G.
AU - Carlo, Tomás A.
N1 - Funding Information:
We thank the Scholarship Fulbright-COLCIENCIAS that financially supported M.F.P. doctoral studies. We also thank S. Gray and D. Smith for providing aphids, virus strains and guidance on experiments; C. Grozinger, J. Rasgon, C. dePamphilis, M. Centinari, G. Felton, M. Carballo, D. Chaverra, and A. Pena-Francesch for generously providing access to reagents and equipment required for this work; G. Villar and F. Acevedo for guidance on molecular methods; F. Gildow and N. Bosque-Perez for their suggestions in the early stage of this project; to J. Buckley for editing the manuscript; to A. Pereira for the insect icons, and N. Sloff for illustrating the Supplementary Fig. 6; to numerous helpers, K. Kennedy, W. Wenckus, M.M. Douglas, K. Kemirembe, D. Smilnak, and D. Taylor; C. Bainter, FLIR company, and the Department of Agriculture, National Institute of Food and Agriculture Grant #2012-67007-19897, T. Carlo and M. Porras were supported by NSF-DEB 1556719, J. Marden by NSF-IOS 1354667, and C.A. Navas by FAPESP Grant 2014/16320-7 while contributing to this work.
Publisher Copyright:
© 2020, The Author(s).
PY - 2020/12/1
Y1 - 2020/12/1
N2 - 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 °C), while also significantly enhancing the thermal tolerance of its aphid vector Rhopalosiphum padi (by 8 °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.
AB - 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 °C), while also significantly enhancing the thermal tolerance of its aphid vector Rhopalosiphum padi (by 8 °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.
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U2 - 10.1038/s41467-020-14953-2
DO - 10.1038/s41467-020-14953-2
M3 - Article
C2 - 32132537
AN - SCOPUS:85081240797
SN - 2041-1723
VL - 11
JO - Nature communications
JF - Nature communications
IS - 1
M1 - 1184
ER -