Abstract
Silver nanoparticle (Ag NP) is one of the most widely used nanoparticles in consumer products due to its antimicrobial properties. The wide usage of Ag NPs has led to their increased release into the environment and it may affect plants physiological and biochemical functions. Therefore, this study has been performed to reveal the dose-dependent (0, 0.5, 1, 5, 10 and 20 ppm) effects of 10-nm-sized Ag NPs on wheat (Triticum aestivum) roots after 15 d, correlating with the appearance of various biochemical and physiological stress responses. The effects of Ag NPs were examined using different experiment such as root elongation, uptake of Ag NPs, TEM analysis, lignin accumulation, callose deposition, H2O2 content, lipid peroxidation, activities of non-enzymatic and enzymatic antioxidants. The result showed that 10 nm-sized Ag NPs caused the inhibition of root elongation over 5 ppm, dose-dependent accumulation of Ag+, ultrastructural changes, lignin accumulation, callose deposition, increase of H2O2 content and lipid peroxidation and SOD, CAT, GPOX, APOX and GR enzymes activities altered as compared to control. As a result, 0.5 and 1 ppm Ag NPs demonstrated hormetic response, but over 5 ppm reduced plant root growth inducing the plant antioxidant defence systems.
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Claims 7
Claim · model-written summary
Silver nanoparticles above 5 ppm inhibited wheat root elongation relative to controls.
- Taxon
- WHEAT
Triticum aestivumt0 - Organ / stage
- ROOTSt0
- Treatment
- 10 nm-sized Ag NPse0
- Outcome
- root elongatione0
- Direction
- inhibitione0
- Qualifier
- over 5 ppme0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“10 nm-sized Ag NPs caused the inhibition of root elongation over 5 ppm”
e1“as compared to control”
t0“WHEAT ROOTS”
Claim · model-written summary
Silver nanoparticles caused dose-dependent Ag+ accumulation in wheat roots.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- 10 nm-sized Ag NPse0
- Outcome
- accumulation of Ag+e0
- Direction
- dose-dependent accumulatione0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“10 nm-sized Ag NPs caused the inhibition of root elongation over 5 ppm, dose-dependent accumulation of Ag+”
e1“as compared to control”
t0“WHEAT ROOTS”
Claim · model-written summary
Silver nanoparticles caused ultrastructural changes in wheat roots.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- 10 nm-sized Ag NPse0
- Outcome
- ultrastructural changese0
- Direction
- changese0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“10 nm-sized Ag NPs caused the inhibition of root elongation over 5 ppm, dose-dependent accumulation of Ag+, ultrastructural changes”
e1“as compared to control”
t0“WHEAT ROOTS”
Claim · model-written summary
Silver nanoparticles caused lignin accumulation and callose deposition in wheat roots.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- 10 nm-sized Ag NPse0
- Outcome
- lignin accumulation, callose depositione0
- Direction
- accumulatione0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“10 nm-sized Ag NPs caused the inhibition of root elongation over 5 ppm, dose-dependent accumulation of Ag+, ultrastructural changes, lignin accumulation, callose deposition”
e1“as compared to control”
t0“WHEAT ROOTS”
Claim · model-written summary
Silver nanoparticles increased H2O2 content and lipid peroxidation in wheat roots.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- 10 nm-sized Ag NPse1
- Outcome
- H2O2 content and lipid peroxidatione0
- Direction
- increasee0
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increase of H2O2 content and lipid peroxidation”
e1“10 nm-sized Ag NPs caused”
e2“as compared to control”
t0“WHEAT ROOTS”
Claim · model-written summary
Silver nanoparticles altered SOD, CAT, GPOX, APOX and GR enzyme activities in wheat roots.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- 10 nm-sized Ag NPse1
- Outcome
- SOD, CAT, GPOX, APOX and GR enzymes activitiese0
- Direction
- alterede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SOD, CAT, GPOX, APOX and GR enzymes activities altered as compared to control”
e1“10 nm-sized Ag NPs caused”
t0“WHEAT ROOTS”
Claim · model-written summary
At 0.5 and 1 ppm, silver nanoparticles produced a hormetic response in wheat roots.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- 0.5 and 1 ppm Ag NPse0
- Outcome
- hormetic responsee0
- Direction
- hormetic responsee0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“0.5 and 1 ppm Ag NPs demonstrated hormetic response”
e1“as compared to control”
t0“WHEAT ROOTS”
The same questions in other papers
silver nanoparticle · growth · Triticum aestivum (wheat)Results differ
3 papers in the same direction as this paper · 13 in the opposite direction
- negative
- positive
- positive
13 papers more in this group
See all 17 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.