Abstract
The mechanisms by which seed-primed silicon dioxide nanoparticles (nSi) alleviated arsenic (As) and cadmium (Cd) toxicity in Brassica napus L. remain unclear. A pot study examined the physico-biochemical, cellular, and molecular responses of B. napus exposed to Cd (10 mg/kg soil) and As (50 mg/kg soil) doses with or without nSi priming. The results showed that nSi priming improved photosynthesis, seedling biomass, and metabolite accumulation, and restored the cell structure. Upon Cd and As stress, nSi diminished oxidative stress by downplaying H 2 O 2 (24–32%) and O 2 •– (29–36%), MDA, and activating antioxidant defenses. Also, nSi relieved Cd and As accumulation (27–36%) by enhancing root-vacuolar sequestration (upregulating BnHMA3, BnPCs, and BnABCC1 ), cell wall chelation, and downregulating root transporters ( BnNRAMP5, BnIRTI, BnHMA2, BnHMA4, BnPHT1.1, and BnPHT1.4) . Our findings revealed that nSi priming effectively enhanced canola tolerance to Cd and As toxicity by strengthening multiple oxidative defense mechanisms and limiting their accumulation.
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Claims 12
Claim · model-written summary
Nanosilica priming improved photosynthesis under metal stress.
- Taxon
- Brassica napus
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napust0 - Treatment
- nSi priminge0
- Outcome
- photosynthesise0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“nSi priming improved photosynthesis, seedling biomass, and metabolite accumulation, and restored the cell structure.”
t0“Brassica napus”
Claim · model-written summary
Nanosilica priming improved seedling biomass under metal stress.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- nSi priminge0
- Outcome
- seedling biomasse0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nSi priming improved photosynthesis, seedling biomass, and metabolite accumulation, and restored the cell structure.”
t0“Brassica napus”
Claim · model-written summary
Nanosilica priming improved metabolite accumulation under metal stress.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- nSi priminge0
- Outcome
- metabolite accumulatione0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nSi priming improved photosynthesis, seedling biomass, and metabolite accumulation, and restored the cell structure.”
t0“Brassica napus”
Claim · model-written summary
Nanosilica priming restored cell structure under metal stress.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- nSi priminge0
- Outcome
- cell structuree0
- Direction
- restorede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nSi priming improved photosynthesis, seedling biomass, and metabolite accumulation, and restored the cell structure.”
t0“Brassica napus”
Claim · model-written summary
Nanosilica reduced H 2 O 2 under Cd and As stress by 24–32%.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- nSie0
- Outcome
- H 2 O 2e0
- Direction
- downplayinge0
- Value
- 24–32%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Upon Cd and As stress, nSi diminished oxidative stress by downplaying H 2 O 2 (24–32%) and O 2 •– (29–36%), MDA, and activating antioxidant defenses.”
t0“Brassica napus”
Claim · model-written summary
Nanosilica reduced O 2 •– under Cd and As stress by 29–36%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Upon Cd and As stress, nSi diminished oxidative stress by downplaying H 2 O 2 (24–32%) and O 2 •– (29–36%), MDA, and activating antioxidant defenses.”
t0“Brassica napus”
Claim · model-written summary
Nanosilica affected MDA under metal stress.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- nSie0
- Outcome
- MDAe0
- Direction
- downplayinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Upon Cd and As stress, nSi diminished oxidative stress by downplaying H 2 O 2 (24–32%) and O 2 •– (29–36%), MDA, and activating antioxidant defenses.”
t0“Brassica napus”
Claim · model-written summary
Nanosilica affected antioxidant defenses under metal stress.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- nSie0
- Outcome
- antioxidant defensese0
- Direction
- activatinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Upon Cd and As stress, nSi diminished oxidative stress by downplaying H 2 O 2 (24–32%) and O 2 •– (29–36%), MDA, and activating antioxidant defenses.”
t0“Brassica napus”
Claim · model-written summary
Nanosilica reduced Cd and As accumulation by 27–36%.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- nSie0
- Outcome
- Cd and As accumulatione0
- Direction
- relievede0
- Value
- 27–36%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nSi relieved Cd and As accumulation (27–36%) by enhancing root-vacuolar sequestration (upregulating BnHMA3, BnPCs, and BnABCC1 ), cell wall chelation, and downregulating root transporters ( BnNRAMP5, BnIRTI, BnHMA2, BnHMA4, BnPHT1.1, and BnPHT1.4)”
t0“Brassica napus”
Claim · model-written summary
Nanosilica altered root-vacuolar sequestration under metal stress.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- nSie0
- Outcome
- root-vacuolar sequestratione0
- Direction
- enhancinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nSi relieved Cd and As accumulation (27–36%) by enhancing root-vacuolar sequestration (upregulating BnHMA3, BnPCs, and BnABCC1 ), cell wall chelation, and downregulating root transporters ( BnNRAMP5, BnIRTI, BnHMA2, BnHMA4, BnPHT1.1, and BnPHT1.4)”
t0“Brassica napus”
Claim · model-written summary
Nanosilica altered cell wall chelation under metal stress.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- nSie0
- Outcome
- cell wall chelatione0
- Direction
- enhancinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nSi relieved Cd and As accumulation (27–36%) by enhancing root-vacuolar sequestration (upregulating BnHMA3, BnPCs, and BnABCC1 ), cell wall chelation, and downregulating root transporters ( BnNRAMP5, BnIRTI, BnHMA2, BnHMA4, BnPHT1.1, and BnPHT1.4)”
t0“Brassica napus”
Claim · model-written summary
Nanosilica altered root transporters under metal stress.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- nSie0
- Outcome
- root transporterse0
- Direction
- downregulatinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nSi relieved Cd and As accumulation (27–36%) by enhancing root-vacuolar sequestration (upregulating BnHMA3, BnPCs, and BnABCC1 ), cell wall chelation, and downregulating root transporters ( BnNRAMP5, BnIRTI, BnHMA2, BnHMA4, BnPHT1.1, and BnPHT1.4)”
t0“Brassica napus”
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See all 9 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.