1. Virus effects on plant quality and vector behavior are species specific and do not depend on host physiological phenotype
- Author
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Arnaud Ameline, Quentin Chesnais, Manuella Catterou, Mark Tepfer, Véronique Brault, Florent Bogaert, Kerry E. Mauck, Antoine Bamière, Fabien Spicher, Université de Picardie Jules Verne (UPJV), Department of Entomology [Riverside], University of California [Riverside] (UCR), University of California-University of California, Santé de la vigne et qualité du vin (SVQV), Institut National de la Recherche Agronomique (INRA)-Université de Strasbourg (UNISTRA), Institut Jean-Pierre Bourgin (IJPB), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, and Université Paris Saclay (COmUE)
- Subjects
0106 biological sciences ,Plant domestication ,[SDV]Life Sciences [q-bio] ,Myzus persicae ,Vector-host interactions ,2.2 Factors relating to physical environment ,01 natural sciences ,Virus ,03 medical and health sciences ,physiological phenotypes ,Plant virus ,[SDV.IDA]Life Sciences [q-bio]/Food engineering ,Camelina genotypes ,[SDV.BV]Life Sciences [q-bio]/Vegetal Biology ,2.2 Factors relating to the physical environment ,[SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering ,Aetiology ,pathogen transmission ,Pathogen ,030304 developmental biology ,plant domestication ,Pathogen transmission ,2. Zero hunger ,Genetics ,0303 health sciences ,Aphid ,myzus persicae ,biology ,Host (biology) ,food and beverages ,Brassicaceae ,Forestry ,biology.organism_classification ,Phenotype ,Vector manipulation ,Vector-Borne Diseases ,Infectious Diseases ,Emerging Infectious Diseases ,camelina genotypes ,[SDE]Environmental Sciences ,vector manipulation ,Infection ,Physiological phenotypes ,Agronomy and Crop Science ,vector-host interactions ,Zoology ,Entomology ,010606 plant biology & botany - Abstract
International audience; There is growing evidence that plant viruses manipulate host plants to increase transmission-conducive behaviors by vectors. Reports of this phenomenon frequently include only highly susceptible, domesticated annual plants as hosts, which constrains our ability to determine whether virus effects are a component of an adaptive strategy on the part of the pathogen or simply by-products of pathology. Here, we tested the hypothesis that transmission-conducive effects of a virus (Turnip yellows virus [TuYV]) on host palatability and vector behavior (Myzus persicae) are linked with host plant tolerance and physiological phenotype. Our study system consisted of a cultivated crop, false flax (Camelina sativa) (Brassicales: Brassicaceae), a wild congener (C. microcarpa), and a viable F1 hybrid of these two species. We found that the most tolerant host (C. microcarpa) exhibited the most transmission-conducive changes in phenotype relative to mock-inoculated healthy plants: Aphids preferred to settle and feed on TuYV-infected C. microcarpa and did not experience fitness changes due to infectionboth of which will increase viruliferous aphid numbers. In contrast, TuYV induced transmission-limiting phenotypes in the least tolerant host (C. sativa) and to a greater degree in the F1 hybrid, which exhibited intermediate tolerance to infection. Our results provide no evidence that virus effects track with infection tolerance or physiological phenotype. Instead, vector preferences and performance are driven by host-specific changes in carbohydrates under TuYV infection. These results provide evidence that induction of transmission-enhancing phenotypes by plant viruses is not simply a by-product of general pathology, as has been proposed as an explanation for putative instances of parasite manipulation by viruses and many other taxa.
- Published
- 2019