Abstract
While nanomaterials offer wide-ranging solutions, their intensified use causes environmental contamination, posing ecotoxicological risks to several organisms, including plants. It becomes important to understand the phytotoxicity of NMs and find sustainable strategies to enhance plant tolerance to these emerging contaminants. Thus, this study aimed to evaluate the potential of ascorbic acid (AsA) in increasing the tolerance of in vitro grown tomato seedlings to nickel oxide nanomaterials (nano-NiO). Seeds of Solanum lycopersicum cv. Micro-Tom were germinated in culture medium containing 30 mg/L nano-NiO, 150 mg/L AsA, or a combination of both. A control situation was included. Surprisingly, single AsA administration in the medium impaired the growth of tomato seedlings and increased the lipid peroxidation of biomembranes. Nonetheless, plant development was more severely repressed by nano-NiO, with evident macroscopic effects that did not translate into serious redox disorders. Still, proline and AsA levels diminished in response to nano-NiO, while glutathione and phenols increased. Despite the negative effects of AsA on non-stressed plants, nano-NiO-induced stress was counteracted by AsA supply, with enhanced levels of glutathione and phenols. Overall, the supplementation with AsA proved to be a “blessing in disguise” for plants under nano-NiO-induced stress, improving antioxidant capacity and activating other defense mechanisms.
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Claims 6
Claim · model-written summary
Ascorbic acid alone impaired tomato seedling growth.
- Taxon
- tomato seedlings
Solanum lycopersicume0 - Treatment
- AsAe0
- Outcome
- growth of tomato seedlingse0
- Direction
- impairede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“single AsA administration in the medium impaired the growth of tomato seedlings”
e1“150 mg/L AsA”
Claim · model-written summary
Ascorbic acid alone increased membrane lipid peroxidation.
- Taxon
- Tomato SeedlingsSolanum lycopersicumt0
- Treatment
- AsAe0
- Outcome
- lipid peroxidation of biomembranese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Seedlings”
e0“single AsA administration in the medium impaired the growth of tomato seedlings and increased the lipid peroxidation of biomembranes”
Claim · model-written summary
Nano-NiO more severely repressed plant development.
- Taxon
- Tomato SeedlingsSolanum lycopersicumt0
- Treatment
- nano-NiOe0
- Outcome
- plant developmente0
- Direction
- repressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Seedlings”
e0“plant development was more severely repressed by nano-NiO”
Claim · model-written summary
Nano-NiO reduced proline and ascorbic acid levels.
- Taxon
- Tomato SeedlingsSolanum lycopersicumt0
- Treatment
- nano-NiOe0
- Outcome
- proline and AsA levelse0
- Direction
- diminishede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Seedlings”
e0“proline and AsA levels diminished in response to nano-NiO”
Claim · model-written summary
Nano-NiO increased glutathione and phenols.
- Taxon
- Tomato SeedlingsSolanum lycopersicumt0
- Treatment
- nano-NiOe1
- Outcome
- glutathione and phenolse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Seedlings”
e0“glutathione and phenols increased”
e1“in response to nano-NiO”
Claim · model-written summary
Ascorbic acid counteracted nano-NiO stress and enhanced glutathione and phenols.
- Taxon
- Tomato SeedlingsSolanum lycopersicumt0
- Treatment
- AsA supplye0
- Outcome
- levels of glutathione and phenolse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tomato Seedlings”
e0“nano-NiO-induced stress was counteracted by AsA supply, with enhanced levels of glutathione and phenols”
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