Abstract
Silver nanoparticles (AgNPs) are among the most widely used nanoparticles and are found in various types of products. In the past few years, these nanoparticles have received significant attention as pesticides for agricultural applications. Utility of AgNPs as efficient pesticides would become a reality if the researches provided some understanding of toxicity of these nanoparticles. Evaluation of the potential genotoxic effects of AgNPs on Vicia faba M1 plants was the main goal in this study. Seeds of V. faba (Sakha 1 variety) were treated with three concentrations of AgNPs (25, 50 and 75 ppm) and M1 populations raised from these seeds were investigated at different levels. Results indicated that all the three concentrations were able to induce significant increase in seed germination percentage (G) and germination rate index (GRI) in addition to root length and seedling vigor index (SVI) compared to control, while no significant differences were detected among the three AgNPs concentrations and control for shoot length. The maximum germination percentage (99.00 %) was found at the 50 ppm concentration while the highest values of root length (15.57 cm) and seedling vigor index (43.77) were recorded at the 25 ppm concentration. Cytological analysis showed that only the concentration of 25 ppm significantly reduced mitotic index (83.47 %) compared to control (91.38 %). Moreover, all treatments caused significantly increase in the percentage of abnormal cells, while the lower concentration (25 ppm) induced the highest percentage of abnormalities (6.90 %) compared to the other treatments. On the molecular level, the effects of AgNPs on genomic template stability (GTS) were measured based on RAPD-PCR analysis using 16 arbitrary primers. All AgNPs concentrations caused reduction in GTS % values; compared to control, which showed decrease in GTS % values as AgNPs concentrations increased. These results indicated that AgNPs had toxic effects on V. faba M1 plants at cytological and molecular levels.
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Claims 11
Claim · model-written summary
All three AgNP concentrations significantly increased seed germination percentage and germination rate index relative to control in Vicia faba.
- Taxon
- Vicia faba
Vicia fabae0 - Material
- Sakha 1e1
- Treatment
- three concentrations of AgNPs (25, 50 and 75 ppm)e1
- Outcome
- seed germination percentage (G) and germination rate index (GRI)e2
- Direction
- increasee2
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vicia faba M1 plants”
e1“Seeds of V. faba (Sakha 1 variety) were treated with three concentrations of AgNPs (25, 50 and 75 ppm)”
e2“all the three concentrations were able to induce significant increase in seed germination percentage (G) and germination rate index (GRI)”
e3“in addition to root length and seedling vigor index (SVI) compared to control”
Claim · model-written summary
All three AgNP concentrations significantly increased root length and seedling vigor index relative to control in Vicia faba.
- Taxon
- Vicia fabaVicia fabae0
- Material
- Sakha 1e1
- Treatment
- three concentrations of AgNPs (25, 50 and 75 ppm)e1
- Outcome
- root length and seedling vigor indexe3
- Direction
- increasee2
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vicia faba M1 plants”
e1“Seeds of V. faba (Sakha 1 variety) were treated with three concentrations of AgNPs (25, 50 and 75 ppm)”
e2“all the three concentrations were able to induce significant increase in seed germination percentage (G) and germination rate index (GRI)”
e3“in addition to root length and seedling vigor index (SVI) compared to control”
Claim · model-written summary
No significant difference in shoot length was found among the three AgNP concentrations and control in Vicia faba.
- Taxon
- Vicia fabaVicia fabae0
- Treatment
- three AgNPs concentrationse4
- Outcome
- shoot lengthe4
- Direction
- no significant differencese4
- Comparator
- controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vicia faba M1 plants”
e4“while no significant differences were detected among the three AgNPs concentrations and control for shoot length”
Claim · model-written summary
Maximum germination percentage (99.00 %) occurred at the 50 ppm AgNP concentration in Vicia faba.
- Taxon
- Vicia fabaVicia fabae0
- Treatment
- 50 ppme5
- Outcome
- germination percentagee5
- Direction
- maximume5
- Value
- 99.00 %e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vicia faba M1 plants”
e5“The maximum germination percentage (99.00 %) was found at the 50 ppm concentration”
Claim · model-written summary
Highest root length (15.57 cm) in Vicia faba occurred at the 25 ppm AgNP concentration.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vicia faba M1 plants”
e6“the highest values of root length (15.57 cm) and seedling vigor index (43.77) were recorded at the 25 ppm concentration”
Claim · model-written summary
Highest seedling vigor index (43.77) in Vicia faba occurred at the 25 ppm AgNP concentration.
- Taxon
- Vicia fabaVicia fabae0
- Treatment
- 25 ppme6
- Outcome
- seedling vigor indexe6
- Direction
- higheste6
- Value
- 43.77e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vicia faba M1 plants”
e6“the highest values of root length (15.57 cm) and seedling vigor index (43.77) were recorded at the 25 ppm concentration”
Claim · model-written summary
Only the 25 ppm AgNP concentration significantly reduced mitotic index (83.47 %) relative to control (91.38 %) in Vicia faba.
- Taxon
- Vicia fabaVicia fabae0
- Treatment
- concentration of 25 ppme7
- Outcome
- mitotic indexe7
- Direction
- reducede7
- Value
- 83.47 %e7
- Qualifier
- 91.38 %e7
- Comparator
- controle7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vicia faba M1 plants”
e7“only the concentration of 25 ppm significantly reduced mitotic index (83.47 %) compared to control (91.38 %)”
Claim · model-written summary
All treatments significantly increased the percentage of abnormal cells in Vicia faba.
- Taxon
- Vicia fabaVicia fabae0
- Treatment
- all treatmentse1
- Outcome
- percentage of abnormal cellse1
- Direction
- increasee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vicia faba M1 plants”
e1“all treatments caused significantly increase in the percentage of abnormal cells”
Claim · model-written summary
The 25 ppm AgNP concentration induced the highest percentage of abnormalities (6.90 %) compared with the other treatments in Vicia faba.
- Taxon
- Vicia fabaVicia fabae0
- Treatment
- the lower concentration (25 ppm)e1
- Outcome
- percentage of abnormalitiese1
- Direction
- higheste1
- Value
- 6.90 %e1
- Comparator
- the other treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vicia faba M1 plants”
e1“the lower concentration (25 ppm) induced the highest percentage of abnormalities (6.90 %) compared to the other treatments”
Claim · model-written summary
All AgNP concentrations reduced genomic template stability (GTS %) relative to control in Vicia faba.
- Taxon
- Vicia fabaVicia fabae0
- Treatment
- All AgNPs concentrationse1
- Outcome
- GTS % valuese1
- Direction
- reductione1
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vicia faba M1 plants”
e1“All AgNPs concentrations caused reduction in GTS % values”
e2“compared to control, which showed decrease in GTS % values as AgNPs concentrations increased”
Claim · model-written summary
Genomic template stability (GTS %) in Vicia faba decreased as AgNP concentration increased.
- Taxon
- Vicia fabaVicia fabae0
- Treatment
- AgNPs concentrationse2
- Outcome
- GTS % valuese2
- Direction
- decreasee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vicia faba M1 plants”
e2“compared to control, which showed decrease in GTS % values as AgNPs concentrations increased”
The same questions in other papers
silver nanoparticle · growth · Vicia faba (faba bean)Results differ
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
- 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.