Abstract
Industrial hemp has an excellent tolerance for lead (Pb) and accumulation capacity. Further improving the Pb tolerance in industrial hemp is of great interest for its future application in phytoremediation. Present study was performed to evaluate the various Pb contaminated soils (normal soil; Pb spiked soil using Pb(NO 3 ) 2 and Pb polluted mine soil) with the Pb level 1300 mg kg −1 and various treatments of the vermicompost (VC) and cerium oxide nanoparticles (CeO 2 NPs), (T 0 = no VC and CeO 2 -NPs; T 1 = CeO₂ NPs (30 mg L −1 ); T 2 = VC (5 % w/w of soil); and T 3 = T 1 + T 2 on the Pb accumulation and hemp productivity. The findings indicated that Pb stress (artificially spiked and natural contamination) led to significant reduction in the growth, biomass, and physiological traits of hemp. The Pb polluted mine soil exhibits more harmful impacts in comparison to artificially Pb spiked soil. The sole application of CeO 2 -NPs leads to less pronounced enhancements in growth and development parameters at rapid growth and harvesting stage in comparison with soil applied VC treatment under the treated and untreated Pb-stressed plants. Combined application of CeO 2 -NPs and VC effectively reduced the malondialdehyde contents (41.34 %), increased the soluble protein (62.35 %) and soluble sugar (29.97 %) as compared to control group. Moreover, the co-active effect of VC and CeO 2 -NPs also had the prospects of reducing Pb accumulation in difference tissues by enhancing physiological resiliency in hemp. Particularly, combined use of VC and CeO 2 -NPs counteracted the adverse effect of Pb stress by boosting growth, biomass, enzymatic antioxidants, and osmoprotectants through limiting the Pb accumulation. Use of organic amendments (VC) and metallic oxide NPs (CeO 2 -NPs) holds promising tool for mitigating the Pb stress, offering a practical and viable approach for hemp production. • Hemp productivity is adversely affected by Pb contamination. • Pb enriched mine soils boosted enzymatic leaf antioxidant in hemp. • Metallic NPs and organic amendments have ability to mitigate the Pb stress. • Vermicompost proved best for alleviating the Pb toxicity compared to CeO 2 -NPs. • Combined application of CeO 2 -NPs + VC is viable approach to mitigate Pb stress.
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Claims 9
Claim · model-written summary
Lead stress significantly reduced hemp growth, biomass and physiological traits.
- Taxon
- hemp
Cannabis sativa subsp. sativae0 - Treatment
- Pb stress (artificially spiked and natural contamination)e0
- Outcome
- growth, biomass, and physiological traitse0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pb stress (artificially spiked and natural contamination) led to significant reduction in the growth, biomass, and physiological traits of hemp”
Claim · model-written summary
Polluted mine soil had more harmful effects than artificially lead-spiked soil.
- Taxon
- hempCannabis sativa subsp. sativat0
- Treatment
- Pb polluted mine soile0
- Outcome
- harmful impactse0
- Direction
- more harmfule0
- Comparator
- artificially Pb spiked soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Pb polluted mine soil exhibits more harmful impacts in comparison to artificially Pb spiked soil”
t0“hemp”
Claim · model-written summary
Cerium oxide nanoparticles alone enhanced growth and development less than vermicompost.
- Taxon
- hempCannabis sativa subsp. sativat0
- Organ / stage
- rapid growth and harvesting stagee0
- Treatment
- sole application of CeO 2 -NPse0
- Outcome
- growth and development parameterse0
- Direction
- less pronounced enhancementse0
- Comparator
- soil applied VC treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The sole application of CeO 2 -NPs leads to less pronounced enhancements in growth and development parameters at rapid growth and harvesting stage in comparison with soil applied VC treatment”
t0“hemp”
Claim · model-written summary
Combined cerium oxide nanoparticles and vermicompost reduced malondialdehyde by 41.34% versus control.
- Taxon
- hempCannabis sativa subsp. sativat0
- Treatment
- Combined application of CeO 2 -NPs and VCe0
- Outcome
- malondialdehyde contentse0
- Direction
- reducede0
- Value
- 41.34 %e0
- Comparator
- control groupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Combined application of CeO 2 -NPs and VC effectively reduced the malondialdehyde contents (41.34 %), increased the soluble protein (62.35 %) and soluble sugar (29.97 %) as compared to control group”
t0“hemp”
Claim · model-written summary
Combined amendment increased soluble protein by 62.35% versus control.
- Taxon
- hempCannabis sativa subsp. sativat0
- Treatment
- Combined application of CeO 2 -NPs and VCe0
- Outcome
- soluble proteine0
- Direction
- increasede0
- Value
- 62.35 %e0
- Comparator
- control groupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Combined application of CeO 2 -NPs and VC effectively reduced the malondialdehyde contents (41.34 %), increased the soluble protein (62.35 %) and soluble sugar (29.97 %) as compared to control group”
t0“hemp”
Claim · model-written summary
Combined amendment increased soluble sugar by 29.97% versus control.
- Taxon
- hempCannabis sativa subsp. sativat0
- Treatment
- Combined application of CeO 2 -NPs and VCe0
- Outcome
- soluble sugare0
- Direction
- increasede0
- Value
- 29.97 %e0
- Comparator
- control groupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Combined application of CeO 2 -NPs and VC effectively reduced the malondialdehyde contents (41.34 %), increased the soluble protein (62.35 %) and soluble sugar (29.97 %) as compared to control group”
t0“hemp”
Claim · model-written summary
Combined amendments limited lead accumulation and boosted hemp growth, biomass, enzymatic antioxidants and osmoprotectants.
- Taxon
- hempCannabis sativa subsp. sativat0
- Treatment
- combined use of VC and CeO 2 -NPse0
- Outcome
- growth, biomass, enzymatic antioxidants, and osmoprotectantse0
- Direction
- boostinge0
- Qualifier
- limiting the Pb accumulatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“combined use of VC and CeO 2 -NPs counteracted the adverse effect of Pb stress by boosting growth, biomass, enzymatic antioxidants, and osmoprotectants through limiting the Pb accumulation”
t0“hemp”
Claim · model-written summary
Lead-enriched mine soils boosted enzymatic leaf antioxidants.
- Taxon
- hempCannabis sativa subsp. sativae0
- Treatment
- Pb enriched mine soilse0
- Outcome
- enzymatic leaf antioxidante0
- Direction
- boostede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pb enriched mine soils boosted enzymatic leaf antioxidant in hemp”
Claim · model-written summary
The authors recommend combined nanoparticles and vermicompost to mitigate lead stress.
- Taxon
- hempCannabis sativa subsp. sativat0
- Treatment
- Combined application of CeO 2 -NPs + VCe0
- Outcome
- mitigate Pb stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Combined application of CeO 2 -NPs + VC is viable approach to mitigate Pb stress”
t0“hemp”
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See all 5 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.