Abstract
Cadmium (Cd) is a well known heavy metal considered as one of the most toxic metals on Earth, affecting all viable cells that are exposed even at low concentration. It is introduced to agricultural soils mainly by phosphate fertilizers and causes many toxic symptoms in cells. Phytochelatins (PCs) are non-protein thiols which are involved in oxidative stress protection and are strongly induced by Cd. In this work, we analyzed metal toxicity as well as PCs implication on protection of peanut plants exposed to Cd. Results showed that Cd exposure induced a reduction of peanut growth and produced changes in the histological structure with a deposit of unknown material on the epidermal and endodermal cells. When plants were exposed to 10 μM Cd, no modification of chlorophyll, lipid peroxides, carbonyl groups, or hydrogen peroxide (H₂O₂) content was observed. At this concentration, peanut leaves and roots glutathione (GSH) content decreased. However, peanut roots were able to synthesize different types of PCs (PC2, PC3, PC4). In conclusion, PC synthesis could prevent metal disturbance on cellular redox balance, avoiding oxidative damage to macromolecules.
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Claims 7
Claim · model-written summary
Cadmium exposure reduced peanut growth.
- Taxon
- peanut
Arachis hypogaeae0 - Treatment
- Cd exposuree0
- Outcome
- peanut growthe0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results showed that Cd exposure induced a reduction of peanut growth”
Claim · model-written summary
Cadmium exposure changed histological structure with deposits on epidermal and endodermal cells.
- Taxon
- peanutArachis hypogaeae0
- Organ / stage
- epidermal and endodermal cellse0
- Treatment
- Cd exposuree0
- Outcome
- changes in the histological structuree0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cd exposure induced a reduction of peanut growth and produced changes in the histological structure with a deposit of unknown material on the epidermal and endodermal cells”
Claim · model-written summary
At 10 μM Cd, chlorophyll, lipid peroxide, carbonyl and hydrogen peroxide content were unchanged.
- Taxon
- peanut plantsArachis hypogaeat0
- Treatment
- 10 μM Cde0
- Outcome
- chlorophyll, lipid peroxides, carbonyl groups, or hydrogen peroxide (H₂O₂) contente0
- Direction
- no modificatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When plants were exposed to 10 μM Cd, no modification of chlorophyll, lipid peroxides, carbonyl groups, or hydrogen peroxide (H₂O₂) content was observed”
t0“peanut plants”
Claim · model-written summary
At 10 μM Cd, peanut leaf glutathione decreased.
- Taxon
- peanutArachis hypogaeae0
- Organ / stage
- leavese0
- Treatment
- At this concentratione0
- Outcome
- glutathione (GSH) contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At this concentration, peanut leaves and roots glutathione (GSH) content decreased”
Claim · model-written summary
At 10 μM Cd, peanut root glutathione decreased.
- Taxon
- peanutArachis hypogaeae0
- Organ / stage
- rootse0
- Treatment
- At this concentratione0
- Outcome
- glutathione (GSH) contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At this concentration, peanut leaves and roots glutathione (GSH) content decreased”
Claim · model-written summary
Peanut roots synthesized PC2, PC3 and PC4.
- Taxon
- peanutArachis hypogaeae0
- Organ / stage
- rootse0
- Outcome
- PCs (PC2, PC3, PC4)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“peanut roots were able to synthesize different types of PCs (PC2, PC3, PC4)”
Claim · model-written summary
Authors infer phytochelatin synthesis may prevent redox disturbance and oxidative macromolecular damage.
- Taxon
- peanut plantsArachis hypogaeat0
- Outcome
- metal disturbance on cellular redox balancee0
- Qualifier
- PC synthesise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PC synthesis could prevent metal disturbance on cellular redox balance, avoiding oxidative damage to macromolecules”
t0“peanut plants”
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