Abstract
Cadmium (Cd) is a prevalent, non-essential, carcinogenic, and hazardous heavy metal that reduces plant productivity and capacity of arable land area around the globe. In the present substrate-based pot study, seedlings of Brassica napus 180015 were grown equidistantly in the spiked-substrate medium for 60 days under increasing concentrations of Cd (0, 10, 20, 30, 40, 50 mg kg−1). Following harvest, the morpho-physio-biochemical, antioxidative, and Cd-induced tolerance responses were evaluated in B. napus under an increasing Cd stress regime. Additionally, these parameters were also investigated to select the plant's threshold tolerance limit for Cd under the spiked-substrate system. B. napus showed dynamic behavior regarding morpho-physio-biochemical attributes, including agronomic features, biomass, photosynthetic pigments, relative water content under increased Cd toxicity. Cd stress-induced hydrogen peroxide (H2O2) production with high MDA contents and passive EL, followed by the orchestration of both enzymatic (SOD, POD, APX, CAT, and GR) and non-enzymatic antioxidants (flavonoids, TPC, TPA, proline, and total soluble protein) up to a certain limit. In addition, Cd-induced stress upregulated transcriptional levels of antioxidative enzyme SOD, POD, APX, GR, and MT encoded genes in B. napus. The increasing trend of Cd accumulation in different tissues at the highest Cd concentration was as follows: root > leaf > stem. In spiked substrate system, B. napus demonstrated improved metal extractability performance and a high potential for phyto-management of low to moderate Cd contamination, implying that this study could be used for integrative breeding programs and decontaminating heavy metals in real contaminated scenarios.Novelty statementThis study provides an insight into Cd-coping mechanisms of oilseed rape involved in alleviating toxicity and simultaneous phyto-management of increasing Cd concentration under spiked substrate system. The current study is the first scientific evidence of using a Cd-spiked soilless substrate medium. The present study will further strengthen our understanding of Cd-instigated positive responses in B. napus. Furthermore, it will provide a useful basis for integrative breeding programs and decontaminating heavy metals in real contaminated scenarios.
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Claims 9
Claim · model-written summary
B. napus showed dynamic behavior in morpho-physio-biochemical attributes, including agronomic features, biomass, photosynthetic pigments and relative water content, under increased Cd toxicity.
- Taxon
- B. napus
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napuse1 - Treatment
- increased Cd toxicitye1
- Outcome
- morpho-physio-biochemical attributese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e1“B. napus showed dynamic behavior regarding morpho-physio-biochemical attributes, including agronomic features, biomass, photosynthetic pigments, relative water content under increased Cd toxicity”
Claim · model-written summary
Cd stress induced hydrogen peroxide (H2O2) production in B. napus.
- Taxon
- B. napusBrassica napuse2
- Treatment
- Cd stresse1
- Outcome
- hydrogen peroxide (H2O2) productione1
- Direction
- inducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cd stress-induced hydrogen peroxide (H2O2) production with high MDA contents and passive EL”
e2“B. napus showed dynamic behavior”
Claim · model-written summary
Cd stress induced high MDA contents and passive EL in B. napus.
- Taxon
- B. napusBrassica napuse2
- Treatment
- Cd stresse1
- Outcome
- MDA contents and passive ELe1
- Direction
- highe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cd stress-induced hydrogen peroxide (H2O2) production with high MDA contents and passive EL”
e2“B. napus showed dynamic behavior”
Claim · model-written summary
Cd stress increased enzymatic antioxidants (SOD, POD, APX, CAT, and GR) in B. napus up to a certain limit.
- Taxon
- B. napusBrassica napuse2
- Treatment
- Cd stresse1
- Outcome
- enzymatic (SOD, POD, APX, CAT, and GR)e3
- Direction
- increaseinferrede3
- Qualifier
- up to a certain limite3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cd stress-induced hydrogen peroxide (H2O2) production with high MDA contents and passive EL”
e2“B. napus showed dynamic behavior”
e3“the orchestration of both enzymatic (SOD, POD, APX, CAT, and GR) and non-enzymatic antioxidants (flavonoids, TPC, TPA, proline, and total soluble protein) up to a certain limit”
Claim · model-written summary
Cd stress increased non-enzymatic antioxidants (flavonoids, TPC, TPA, proline and total soluble protein) in B. napus up to a certain limit.
- Taxon
- B. napusBrassica napuse2
- Treatment
- Cd stresse1
- Outcome
- non-enzymatic antioxidantse3
- Direction
- increaseinferrede3
- Qualifier
- flavonoids, TPC, TPA, proline, and total soluble proteine3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cd stress-induced hydrogen peroxide (H2O2) production with high MDA contents and passive EL”
e2“B. napus showed dynamic behavior”
e3“the orchestration of both enzymatic (SOD, POD, APX, CAT, and GR) and non-enzymatic antioxidants (flavonoids, TPC, TPA, proline, and total soluble protein) up to a certain limit”
Claim · model-written summary
Cd-induced stress upregulated transcription of antioxidative enzyme genes SOD, POD, APX, GR and MT in B. napus.
- Taxon
- B. napusBrassica napuse1
- Treatment
- Cd-induced stresse1
- Gene
- SOD, POD, APX, GR, and MTe1
- Outcome
- transcriptional levelse1
- Direction
- upregulatede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Cd-induced stress upregulated transcriptional levels of antioxidative enzyme SOD, POD, APX, GR, and MT encoded genes in B. napus”
Claim · model-written summary
Cd accumulation in B. napus tissues at the highest Cd concentration followed root > leaf > stem.
- Taxon
- B. napusBrassica napuse2
- Organ / stage
- root > leaf > steme1
- Treatment
- highest Cd concentratione1
- Outcome
- Cd accumulation in different tissuese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The increasing trend of Cd accumulation in different tissues at the highest Cd concentration was as follows: root > leaf > stem”
e2“B. napus showed dynamic behavior”
Claim · model-written summary
In spiked substrate, B. napus showed improved metal extractability performance.
- Taxon
- B. napusBrassica napuse1
- Outcome
- metal extractability performancee1
- Setting
- spiked substrate systeme1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In spiked substrate system, B. napus demonstrated improved metal extractability performance and a high potential for phyto-management of low to moderate Cd contamination”
Claim · model-written summary
B. napus has a high potential for phyto-management of low to moderate Cd contamination.
- Taxon
- B. napusBrassica napuse1
- Outcome
- phyto-management of low to moderate Cd contaminatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In spiked substrate system, B. napus demonstrated improved metal extractability performance and a high potential for phyto-management of low to moderate Cd contamination”
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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.