Abstract
Aim. Advantages of using UV-C for plant protection include its non-toxicity, broad-spectrum antipathogen activity without risk of developing resistance, low cost, and ease of application. However, plants exposed to UV-C may be further weakened by abiotic stresses. This research is to investigate the impact of abiotic factors on plant sensitivity to UV-C, using pea (Pisum sativum L.) as a model. Methods. Mechanical wounding was applied to leaves of pea plants (cv. Aronis), and water levels were raised to simulate flooding. Plants were irradiated with UV-C at 10 kJ/m². Endogenous hydrogen peroxide content, as well as morphometric growth parameters of roots and leaves, were measured during the experiments. Experiments were repeated three times and analyzed statistically. Results. UV-C exposure induced oxidative stress, as evidenced by a marked increase in H₂O₂ levels by day 4. The highest fluctuations in H₂O₂ were recorded under combined stress (flooding + UV-C), peaking on day 10. In wounded plants, the response was more complex and prolonged, with the combination of wounding and UV-C showing the highest H₂O₂ accumulation on day 7. Conclusions. Combined mechanical injury and UV-C irradiation synergistically enhanced oxidative responses, exceeding the effect of either factor alone, suggesting an amplified stress signaling interaction.
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Claims 4
Claim · model-written summary
UV C raised hydrogen peroxide by day 4.
- Taxon
- pea
Lathyrus oleraceust0 - Treatment
- UV-C exposuree0
- Outcome
- H₂O₂ levelse0
- Direction
- increasee0
- Qualifier
- by day 4e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UV-C exposure induced oxidative stress, as evidenced by a marked increase in H₂O₂ levels by day 4.”
t0“pea (Pisum sativum L.) as a model”
Claim · model-written summary
Flooding plus UV C had the highest hydrogen peroxide fluctuations, peaking on day 10.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- combined stress (flooding + UV-C)e0
- Outcome
- fluctuations in H₂O₂e0
- Direction
- higheste0
- Qualifier
- peaking on day 10e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest fluctuations in H₂O₂ were recorded under combined stress (flooding + UV-C), peaking on day 10.”
t0“pea (Pisum sativum L.) as a model”
Claim · model-written summary
Wounding plus UV C yielded the highest hydrogen peroxide accumulation on day 7.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- combination of wounding and UV-Ce0
- Outcome
- H₂O₂ accumulatione0
- Direction
- higheste0
- Qualifier
- on day 7e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In wounded plants, the response was more complex and prolonged, with the combination of wounding and UV-C showing the highest H₂O₂ accumulation on day 7.”
t0“pea (Pisum sativum L.) as a model”
Claim · model-written summary
Mechanical injury and UV C synergistically enhanced oxidative responses beyond either stress alone.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- Combined mechanical injury and UV-C irradiatione0
- Outcome
- oxidative responsese0
- Direction
- enhancede0
- Comparator
- either factor alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Combined mechanical injury and UV-C irradiation synergistically enhanced oxidative responses, exceeding the effect of either factor alone”
t0“pea (Pisum sativum L.) as a model”
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