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PLoS One

Title:		Water deficit enhances the transmission of plant viruses by insect vectors
Author(s):		van Munster M; Yvon M; Vile D; Dader B; Fereres A; Blanc S;
Address:		"BGPI UMR385, INRA Montpellier, France. LEPSE UMR759, INRA, Montpellier, France. Department de Proteccion Vegetal, Instituto de Ciencias Agrarias, Madrid, Spain"
Journal Title:		PLoS One
Year:		2017
Volume:		20170503
Issue:		5
Page Number:		e0174398 -
DOI:		10.1371/journal.pone.0174398
ISSN/ISBN:		1932-6203 (Electronic) 1932-6203 (Linking)
Abstract:		"Drought is a major threat to crop production worldwide and is accentuated by global warming. Plant responses to this abiotic stress involve physiological changes overlapping, at least partially, the defense pathways elicited both by viruses and their herbivore vectors. Recently, a number of theoretical and empirical studies anticipated the influence of climate changes on vector-borne viruses of plants and animals, mainly addressing the effects on the virus itself or on the vector population dynamics, and inferring possible consequences on virus transmission. Here, we directly assess the effect of a severe water deficit on the efficiency of aphid-transmission of the Cauliflower mosaic virus (CaMV) or the Turnip mosaic virus (TuMV). For both viruses, our results demonstrate that the rate of vector-transmission is significantly increased from water-deprived source plants: CaMV transmission reproducibly increased by 34% and that of TuMV by 100%. In both cases, the enhanced transmission rate could not be explained by a higher virus accumulation, suggesting a more complex drought-induced process that remains to be elucidated. The evidence that infected plants subjected to drought are much better virus sources for insect vectors may have extensive consequences for viral epidemiology, and should be investigated in a wide range of plant-virus-vector systems"
Keywords:		Animals;Animals Aphids/*virology Brassica rapa/virology *Droughts Insect Vectors/*virology *Mosaic Viruses *Plant Diseases/virology;
Notes:		"Medlinevan Munster, Manuella Yvon, Michel Vile, Denis Dader, Beatriz Fereres, Alberto Blanc, Stephane eng 2017/05/04 PLoS One. 2017 May 3; 12(5):e0174398. doi: 10.1371/journal.pone.0174398. eCollection 2017"