Abstract
Abstract Preharvest hormetic doses of UV‐C radiation can decrease the susceptibility of tomato leaves to Botrytis cinerea L. infection. UV‐C light treatments have been shown to be very effective for reducing disease development in several species, including tomato ( Solanum lycopersicum L.). Treating cultivated tomato plants with UV‐C light is of interest not only because of the disinfecting effects of UV‐C light but also because of its ability to stimulate plant defences (SDP) against diseases, provided that the applied doses are high enough to be effective while low enough to prevent deleterious effects. In the present study, the effects of UV‐C light on plants were evaluated by biochemical analyses, including analyses of the activities of antioxidant enzymes and phenylalanine lyase (PAL); the concentration of malondialdehyde (MDA), an indicator of membrane integrity; and chlorophyll fluorescence parameters, such as the maximum quantum efficiency of photosystem II ( F V / F M ) and the Strasser performance index (PI). In this work, treatments with single doses of 0.85 kJ/m 2 of UV‐C light were found to significantly increase plant defences against B. cinerea , reducing the affected leaf area by 51% compared to the affected area of control plants. This decrease in susceptibility was associated with increased PAL activity and the amount of bound phenolics compared to levels in control plants (not treated with UV‐C).
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Claims 3
Claim · model-written summary
A single 0.85 kJ/m 2 UV-C dose reduced Botrytis-affected tomato leaf area by 51% relative to controls.
- Taxon
- tomato
Solanum lycopersicume1 - Organ / stage
- leafe0
- Treatment
- single doses of 0.85 kJ/m 2 of UV‐C lighte0
- Interactor
- B. cinerea
Botrytis cinereae0pathogen - Outcome
- affected leaf areae0
- Direction
- reducinge0
- Value
- 51%e0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatments with single doses of 0.85 kJ/m 2 of UV‐C light were found to significantly increase plant defences against B. cinerea , reducing the affected leaf area by 51% compared to the affected area of control plants”
e1“tomato plants with UV‐C light”
Claim · model-written summary
UV-C-associated reduced susceptibility coincided with increased tomato PAL activity.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- UV‐Ce0
- Gene
- PALe0
- Outcome
- PAL activitye0
- Direction
- increasede0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This decrease in susceptibility was associated with increased PAL activity and the amount of bound phenolics compared to levels in control plants (not treated with UV‐C)”
e1“tomato plants with UV‐C light”
Claim · model-written summary
UV-C-associated reduced susceptibility coincided with increased tomato bound phenolics.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- UV‐Ce0
- Outcome
- amount of bound phenolicse0
- Direction
- increasede0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This decrease in susceptibility was associated with increased PAL activity and the amount of bound phenolics compared to levels in control plants (not treated with UV‐C)”
e1“tomato plants with UV‐C light”
The same questions in other papers
light · Botrytis cinerea · Solanum lycopersicum (tomato)Positive and negative results
7 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
5 papers more in this group
See all 9 papers →uv · Botrytis cinerea · Solanum lycopersicum (tomato)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.