Abstract
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.
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Claims 5
Claim · model-written summary
ASM reduced symptom severity for both viruses.
- Taxon
- Melon
.jpg?width=60)
Cucumis melot0 - Treatment
- ASM treatmente0
- Outcome
- symptom severitye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“For both pathogens, ASM treatment reduced symptom severity”
t0“Melon”
Claim · model-written summary
ASM delayed disease progression for both viruses.
- Taxon
- MelonCucumis melot0
- Treatment
- ASM treatmente0
- Outcome
- disease progressione0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For both pathogens, ASM treatment reduced symptom severity and delayed disease progression.”
t0“Melon”
Claim · model-written summary
For CYSDV, ASM attenuated symptoms that encourage vector visitation and virion uptake.
- Taxon
- MelonCucumis melot0
- Treatment
- ASMe1
- Interactor
- CYSDVe0pathogen
- Outcome
- symptoms that encourage vector visitation and virion uptakee0
- Direction
- attenuatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For CYSDV, this resulted in the attenuation of symptoms that encourage vector visitation and virion uptake.”
t0“Melon”
e1“ASM treatment reduced symptom severity”
Claim · model-written summary
ASM produced slight growth versus defense tradeoffs.
- Taxon
- MelonCucumis melot0
- Treatment
- ASM treatmente0
- Outcome
- growth vs. defensee0
- Qualifier
- slight trade-offse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We did observe slight trade-offs in growth vs. defense following ASM treatment”
t0“Melon”
Claim · model-written summary
ASM did not reduce field yield or plant performance.
- Taxon
- MelonCucumis melot0
- Treatment
- ASMe1
- Outcome
- yields or plant performancee0
- Direction
- did not translate into reducede0
- Setting
- in the fielde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these effects did not translate into reduced yields or plant performance in the field.”
t0“Melon”
e1“ASM treatment reduced symptom severity”
The same questions in other papers
acibenzolar-S-methyl · disease · Cucumis melo (muskmelon)Positive and negative results
9 papers in the same direction as this paper · 2 in the opposite direction
- positive
- negative
- no effect
8 papers more in this group
See all 12 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.