Abstract
Increasing ultraviolet (UV) radiation is causing oxidative stress that accounts for growth and yield losses in the present era of climate change. Plant hormones are useful tools for minimizing UV-induced oxidative stress in plants, but their putative roles in protecting tomato development under UVC remain unknown. Therefore, we investigated the underlying mechanism of pre-and post-kinetin (Kn) treatments on tomato plants under UVC stress. The best dose of Kn was screened in the preliminary experiments, and this dose was tested in further experiments. UVC significantly decreases growth traits, photosynthetic pigments, protein content, and primary metabolites (proteins, carbohydrates, amino acids) but increases oxidative stress biomarkers (lipid peroxidation, lipoxygenase activity, superoxide anion, hydroxyl radical, and hydrogen peroxide) and proline content. Treatment of pre-and post-kinetin spraying to tomato plants decreases UVC-induced oxidative stress by restoring the primary and secondary metabolites' (phenolic compounds, flavonoids, and anthocyanins) status and upregulating the antioxidant defense systems (non-enzymatic antioxidants as ascorbate, reduced glutathione, α-tocopherol as well as enzymatic antioxidants as superoxide dismutase, catalase, ascorbate peroxidase, glutathione peroxidase, glutathione-S-transferase, and phenylalanine ammonia-lyase). Thus, the application of Kn in optimum doses and through different modes can be used to alleviate UVC-induced negative impacts in tomato plants.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
UVC significantly decreased tomato growth traits.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- UVCe0
- Outcome
- growth traitse0
- Direction
- decreasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UVC significantly decreases growth traits, photosynthetic pigments, protein content, and primary metabolites (proteins, carbohydrates, amino acids)”
t0“tomato plants”
Claim · model-written summary
UVC significantly decreased tomato photosynthetic pigments.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- UVCe0
- Outcome
- photosynthetic pigmentse0
- Direction
- decreasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UVC significantly decreases growth traits, photosynthetic pigments, protein content, and primary metabolites (proteins, carbohydrates, amino acids)”
t0“tomato plants”
Claim · model-written summary
UVC significantly decreased tomato protein content and primary metabolites.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- UVCe0
- Outcome
- protein content, and primary metabolites (proteins, carbohydrates, amino acids)e0
- Direction
- decreasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UVC significantly decreases growth traits, photosynthetic pigments, protein content, and primary metabolites (proteins, carbohydrates, amino acids)”
t0“tomato plants”
Claim · model-written summary
UVC increased tomato oxidative stress biomarkers.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- UVCe2
- Outcome
- oxidative stress biomarkers (lipid peroxidation, lipoxygenase activity, superoxide anion, hydroxyl radical, and hydrogen peroxide)e0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increases oxidative stress biomarkers (lipid peroxidation, lipoxygenase activity, superoxide anion, hydroxyl radical, and hydrogen peroxide) and proline content.”
t0“tomato plants”
e2“UVC significantly decreases growth traits”
Claim · model-written summary
UVC increased tomato proline content.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- UVCe2
- Outcome
- proline contente0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increases oxidative stress biomarkers (lipid peroxidation, lipoxygenase activity, superoxide anion, hydroxyl radical, and hydrogen peroxide) and proline content.”
t0“tomato plants”
e2“UVC significantly decreases growth traits”
Claim · model-written summary
Pre- and post-kinetin spraying decreased UVC-induced oxidative stress in tomato.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- pre-and post-kinetin sprayinge0
- Outcome
- UVC-induced oxidative stresse0
- Direction
- decreasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment of pre-and post-kinetin spraying to tomato plants decreases UVC-induced oxidative stress”
Claim · model-written summary
Kinetin spraying restored primary and secondary metabolite status under UVC.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- pre-and post-kinetin sprayinge0
- Outcome
- primary and secondary metabolites' (phenolic compounds, flavonoids, and anthocyanins) statuse0
- Direction
- restoringe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment of pre-and post-kinetin spraying to tomato plants decreases UVC-induced oxidative stress by restoring the primary and secondary metabolites' (phenolic compounds, flavonoids, and anthocyanins) status”
Claim · model-written summary
Kinetin spraying upregulated nonenzymatic and enzymatic antioxidant defenses under UVC.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- pre-and post-kinetin sprayinge1
- Outcome
- antioxidant defense systemse0
- Direction
- upregulatinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“upregulating the antioxidant defense systems (non-enzymatic antioxidants as ascorbate, reduced glutathione, α-tocopherol as well as enzymatic antioxidants as superoxide dismutase, catalase, ascorbate peroxidase, glutathione peroxidase, glutathione-S-transferase, and phenylalanine ammonia-lyase)”
e1“Treatment of pre-and post-kinetin spraying to tomato plants”
Claim · model-written summary
The authors recommend optimum kinetin doses through different modes to alleviate UVC effects on tomato.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- Kn in optimum dosese0
- Outcome
- application of Kn in optimum doses and through different modese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of Kn in optimum doses and through different modes can be used to alleviate UVC-induced negative impacts in tomato plants.”
The same questions in other papers
uv · physiology: photosynthesis · Solanum lycopersicum (tomato)Results differ
7 papers in the same direction as this paper · 3 in the opposite direction
- negative
- positive
- positive
7 papers more in this group
See all 11 papers →uv · growth · Solanum lycopersicum (tomato)Results differ
14 papers in the same direction as this paper · 12 in the opposite direction
- positive
- positive
- positive
23 papers more in this group
See all 27 papers →uv · physiology: oxidative · Solanum lycopersicum (tomato)Positive and negative results
3 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
2 papers more in this group
See all 6 papers →uv · physiology: osmolytes · Solanum lycopersicum (tomato)Positive and negative results
3 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
2 papers more in this group
See all 6 papers →application · physiology: oxidative · Solanum lycopersicum (tomato)Positive and negative results
41 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
39 papers more in this group
See all 43 papers →application · quality: phytochemicals · Solanum lycopersicum (tomato)Positive and negative results
51 papers in the same direction as this paper · 6 in the opposite direction
- negative
- negative
- negative
54 papers more in this group
See all 58 papers →application · disease · Solanum lycopersicum (tomato)Positive and negative results
133 papers in the same direction as this paper · 16 in the opposite direction
- negative
- negative
- negative
146 papers more in this group
See all 150 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.