Next Article in Journal
The Segment Matters: Probable Reassortment of Tilapia Lake Virus (TiLV) Complicates Phylogenetic Analysis and Inference of Geographical Origin of New Isolate from Bangladesh
Next Article in Special Issue
Molecular Insights into Host and Vector Manipulation by Plant Viruses
Previous Article in Journal
The Kaposi’s Sarcoma-Associated Herpesvirus (KSHV) gH/gL Complex Is the Predominant Neutralizing Antigenic Determinant in KSHV-Infected Individuals
Previous Article in Special Issue
Impact of Abiotic Stresses on Plant Virus Transmission by Aphids
Article

Priming Melon Defenses with Acibenzolar-S-methyl Attenuates Infections by Phylogenetically Distinct Viruses and Diminishes Vector Preferences for Infected Hosts

1
Department of Entomology, University of California-Riverside, Riverside, CA 92521, USA
2
Gembloux Agro-Bio Tech, University of Liège, B-5030 Gembloux, Belgium
*
Author to whom correspondence should be addressed.
Received: 15 November 2019 / Revised: 7 February 2020 / Accepted: 21 February 2020 / Published: 26 February 2020
(This article belongs to the Special Issue Plant Virus Transmission by Vectors)
Plant virus management is mostly achieved through control of insect vectors using insecticides. However, insecticides are only marginally effective for preventing virus transmission. Furthermore, it is well established that symptoms of virus infections often encourage vector visitation to infected hosts, which exacerbates secondary spread. Plant defense elicitors, phytohormone analogs that prime the plant immune system against attack, may be a viable approach for virus control that complements insecticide use by disrupting pathologies that attract vectors. To explore this, we tested the effect of a commercial plant elicitor, acibenzolar-S-methyl (ASM), on infection rates, virus titers, and symptom development in melon plants inoculated with one of two virus species, Cucumber mosaic virus (CMV) and Cucurbit yellow stunting disorder virus (CYSDV). We also conducted behavioral assays to assess the effect of ASM treatment and virus inoculation on vector behavior. For both pathogens, ASM treatment reduced symptom severity and delayed disease progression. For CYSDV, this resulted in the attenuation of symptoms that encourage vector visitation and virion uptake. We did observe slight trade-offs in growth vs. defense following ASM treatment, but these effects did not translate into reduced yields or plant performance in the field. Our results suggest that immunity priming may be a valuable tool for improving management of insect-transmitted plant viruses. View Full-Text
Keywords: plant defense elicitor; plant virus; vector behavior; cucurbit yellow stunting disorder virus (CYSDV); cucumber mosaic virus (CMV); Bemisia tabaci; Aphis gossypii; virus pathology; electrical penetration graphing; virus manipulation plant defense elicitor; plant virus; vector behavior; cucurbit yellow stunting disorder virus (CYSDV); cucumber mosaic virus (CMV); Bemisia tabaci; Aphis gossypii; virus pathology; electrical penetration graphing; virus manipulation
Show Figures

Figure 1

MDPI and ACS Style

Kenney, J.R.; Grandmont, M.-E.; Mauck, K.E. Priming Melon Defenses with Acibenzolar-S-methyl Attenuates Infections by Phylogenetically Distinct Viruses and Diminishes Vector Preferences for Infected Hosts. Viruses 2020, 12, 257. https://0-doi-org.brum.beds.ac.uk/10.3390/v12030257

AMA Style

Kenney JR, Grandmont M-E, Mauck KE. Priming Melon Defenses with Acibenzolar-S-methyl Attenuates Infections by Phylogenetically Distinct Viruses and Diminishes Vector Preferences for Infected Hosts. Viruses. 2020; 12(3):257. https://0-doi-org.brum.beds.ac.uk/10.3390/v12030257

Chicago/Turabian Style

Kenney, Jaimie R., Marie-Eve Grandmont, and Kerry E. Mauck 2020. "Priming Melon Defenses with Acibenzolar-S-methyl Attenuates Infections by Phylogenetically Distinct Viruses and Diminishes Vector Preferences for Infected Hosts" Viruses 12, no. 3: 257. https://0-doi-org.brum.beds.ac.uk/10.3390/v12030257

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop