Abstract
Biogenically synthesized silver and gold nanoparticles were evaluated for antifungal activity against Rhizoctonia solani causing sheath blight of rice. Both the nanoparticles were tested at 1, 5, 10, 50, 100 and 200 ppm along with chemical check against the pathogen. Silver nanoparticle (Ag NP) at 200 ppm showed the highest inhibition (73.39%) in the radial growth of R. solani , while gold nanoparticle (Au NP) at the same concentration inhibited the growth of the pathogen up to 60.83%. Study on mode of action of nanoparticle by electron microscopy showed that Ag NP accumulate inside the fungal cells thereby cause distortion of fungal cells leading to death of the pathogen. Ag NP at 200 and 100 ppm caused complete inhibition of sclerotial germination of R. solani . Pot experiment conducted to study the efficacy of Ag NP at 200 ppm against sheath blight of rice showed that application of Ag NP increased the plant growth parameters as compared to control, with reduced per cent disease incidence (20.00%) as compared to inoculated control R. solani (88.00%). Application of Ag NP also increased the concentration of vital secondary metabolites like phenols, flavonoids, terpenoids and total soluble sugars.
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Claims 9
Claim · model-written summary
Silver nanoparticles at 200 ppm inhibited fungal radial growth by 73.39%.
- Taxon
- rice
Oryza sativat0 - Treatment
- Silver nanoparticle (Ag NP) at 200 ppme0
- Interactor
- R. solani
Rhizoctonia solanie0pathogen - Outcome
- radial growth of R. solanie0
- Direction
- inhibitione0
- Value
- 73.39%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Silver nanoparticle (Ag NP) at 200 ppm showed the highest inhibition (73.39%) in the radial growth of R. solani”
Claim · model-written summary
Gold nanoparticles at 200 ppm inhibited pathogen growth by 60.83%.
- Taxon
- riceOryza sativat0
- Treatment
- gold nanoparticle (Au NP)e0
- Interactor
- R. solaniRhizoctonia solanie1pathogen
- Outcome
- growth of the pathogene0
- Direction
- inhibitede0
- Value
- 60.83%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“gold nanoparticle (Au NP) at the same concentration inhibited the growth of the pathogen up to 60.83%.”
e1“Silver nanoparticle (Ag NP) at 200 ppm showed the highest inhibition (73.39%) in the radial growth of R. solani”
Claim · model-written summary
Silver nanoparticles accumulated inside fungal cells and distorted them, leading to pathogen death.
- Taxon
- riceOryza sativat0
- Treatment
- Ag NPe0
- Interactor
- R. solaniRhizoctonia solanie1pathogen
- Outcome
- death of the pathogene0
- Qualifier
- distortion of fungal cellse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Ag NP accumulate inside the fungal cells thereby cause distortion of fungal cells leading to death of the pathogen.”
e1“Silver nanoparticle (Ag NP) at 200 ppm showed the highest inhibition (73.39%) in the radial growth of R. solani”
Claim · model-written summary
Silver nanoparticles at 200 ppm completely inhibited sclerotial germination.
- Taxon
- riceOryza sativat0
- Treatment
- Ag NP at 200e0
- Interactor
- R. solaniRhizoctonia solanie0pathogen
- Outcome
- sclerotial germination of R. solanie0
- Direction
- complete inhibitione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Ag NP at 200 and 100 ppm caused complete inhibition of sclerotial germination of R. solani .”
Claim · model-written summary
Silver nanoparticles at 100 ppm completely inhibited sclerotial germination.
- Taxon
- riceOryza sativat0
- Treatment
- 100 ppme0
- Interactor
- R. solaniRhizoctonia solanie0pathogen
- Outcome
- sclerotial germination of R. solanie0
- Direction
- complete inhibitione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Ag NP at 200 and 100 ppm caused complete inhibition of sclerotial germination of R. solani .”
Claim · model-written summary
Silver nanoparticles increased rice growth parameters versus control.
- Taxon
- riceOryza sativat0
- Treatment
- Ag NPe0
- Outcome
- plant growth parameterse0
- Direction
- increasede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“application of Ag NP increased the plant growth parameters as compared to control”
Claim · model-written summary
Silver nanoparticles reduced disease incidence to 20.00% versus 88.00% in inoculated controls.
- Taxon
- riceOryza sativat0
- Treatment
- Ag NPe1
- Interactor
- R. solaniRhizoctonia solanie0pathogen
- Outcome
- per cent disease incidencee0
- Direction
- reducede0
- Value
- 20.00%e0
- Qualifier
- 88.00%e0
- Comparator
- inoculated control R. solanie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“reduced per cent disease incidence (20.00%) as compared to inoculated control R. solani (88.00%).”
e1“application of Ag NP increased the plant growth parameters as compared to control”
Claim · model-written summary
Silver nanoparticles increased phenols, flavonoids and terpenoids.
- Taxon
- riceOryza sativat0
- Treatment
- Ag NPe0
- Outcome
- phenols, flavonoids, terpenoidse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Application of Ag NP also increased the concentration of vital secondary metabolites like phenols, flavonoids, terpenoids and total soluble sugars.”
Claim · model-written summary
Silver nanoparticles increased total soluble sugars.
- Taxon
- riceOryza sativat0
- Treatment
- Ag NPe0
- Outcome
- total soluble sugarse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Application of Ag NP also increased the concentration of vital secondary metabolites like phenols, flavonoids, terpenoids and total soluble sugars.”
The same questions in other papers
silver nanoparticle · growth · Oryza sativa (rice)Results differ
7 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- negative
7 papers more in this group
See all 11 papers →silver nanoparticle · Rhizoctonia solani · Oryza sativa (rice)Results agree
2 papers in the same direction as this paper
- 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.