Abstract
Cadmium (Cd) and chromium (Cr) pollution severely limit the productivity of rapeseed (Brassica napus L.). A synergistic strategy combining biochar and arbuscular mycorrhizal fungi (AMF), applied with or without humic acid, was evaluated in greenhouse soil spiked with 50 mg kg⁻¹ Cd and Cr. AMF inoculation increased shoot dry weight by 36% and the Cd bioconcentration factor by 11% relative to polluted controls. Adding biochar or humic acid further elevated shoot- and root-BCF for Cd and Cr by 25-80% and raised the transfer factor above 1.2, indicating efficient root-to-shoot metal translocation. Total accumulation concentration doubled compared with AMF alone. The humic-acid + AMF treatment reduced malondialdehyde by 36% and moderated superoxide dismutase, catalase, and ascorbate peroxidase activities, evidencing lower oxidative stress. Overall, integrating AMF with biochar or humic acid enhanced biomass, mitigated oxidative damage, and strengthened phytoremediation capacity, offering a practical solution for Cd/Cr-contaminated, low-organic-matter soils.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
AMF inoculation increased shoot dry weight by 36% relative to polluted controls.
Verbatim
e0“AMF inoculation increased shoot dry weight by 36% and the Cd bioconcentration factor by 11% relative to polluted controls”
t0“rapeseed”
Claim · model-written summary
AMF inoculation increased the Cd bioconcentration factor by 11% relative to polluted controls.
Verbatim
e0“AMF inoculation increased shoot dry weight by 36% and the Cd bioconcentration factor by 11% relative to polluted controls”
t0“rapeseed”
Claim · model-written summary
Adding biochar or humic acid elevated shoot and root Cd and Cr bioconcentration factors by 25-80%.
- Taxon
- rapeseedt0
- Treatment
- biochar or humic acide0
- Outcome
- shoot- and root-BCF for Cd and Cre0
- Direction
- elevatede0
- Value
- 25-80%e0
Not reportedComparator
Verbatim
e0“Adding biochar or humic acid further elevated shoot- and root-BCF for Cd and Cr by 25-80%”
t0“rapeseed”
Claim · model-written summary
Adding biochar or humic acid raised the transfer factor above 1.2.
- Taxon
- rapeseedt0
- Treatment
- biochar or humic acide0
- Outcome
- transfer factore0
- Direction
- raisede0
- Value
- above 1.2e0
Not reportedComparator
Verbatim
e0“Adding biochar or humic acid further elevated shoot- and root-BCF for Cd and Cr by 25-80% and raised the transfer factor above 1.2”
t0“rapeseed”
Claim · model-written summary
Total accumulation concentration doubled compared with AMF alone.
Not reportedTreatment
Verbatim
e0“Total accumulation concentration doubled compared with AMF alone”
t0“rapeseed”
Claim · model-written summary
Humic acid plus AMF reduced malondialdehyde by 36%.
- Taxon
- rapeseedt0
- Treatment
- humic-acid + AMF treatmente0
- Interactor
- AMFe0symbiont
- Outcome
- malondialdehydee0
- Direction
- reducede0
- Value
- 36%e0
Not reportedComparator
Verbatim
e0“The humic-acid + AMF treatment reduced malondialdehyde by 36%”
t0“rapeseed”
Claim · model-written summary
Humic acid plus AMF moderated superoxide dismutase, catalase and ascorbate peroxidase activities.
- Taxon
- rapeseedt0
- Treatment
- humic-acid + AMF treatmente0
- Interactor
- AMFe0symbiont
- Outcome
- superoxide dismutase, catalase, and ascorbate peroxidase activitiese0
Not reportedComparatorDirection
Verbatim
e0“The humic-acid + AMF treatment reduced malondialdehyde by 36% and moderated superoxide dismutase, catalase, and ascorbate peroxidase activities”
t0“rapeseed”
The same questions in other papers
mycorrhiza · growth · Brassica napus (oilseed rape)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
other · physiology: oxidative · Brassica napus (oilseed rape)Positive and negative results
6 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- positive
4 papers more in this group
See all 8 papers →other · nutrient: content · Brassica napus (oilseed rape)Positive and negative results
17 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- positive
15 papers more in this group
See all 19 papers →inoculation · nutrient: content · Brassica napus (oilseed rape)Positive and negative results
30 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- negative
- negative
31 papers more in this group
See all 35 papers →inoculation · growth · Brassica napus (oilseed rape)Positive and negative results
60 papers in the same direction as this paper · 13 in the opposite direction
- no effect
- negative
- negative
70 papers more in this group
See all 74 papers →mycorrhiza · physiology: antioxidant enzymes · Brassica napus (oilseed rape)Results agree
1 paper in the same direction as this paper
- positive
other · physiology: antioxidant enzymes · Brassica napus (oilseed rape)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →biochar · nutrient: content · Brassica napus (oilseed rape)Results agree
11 papers in the same direction as this paper
- positive
- positive
- positive
8 papers more in this group
See all 12 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.