Abstract
Cadmium (Cd) is a toxic and harmful heavy metal that contaminates agricultural soil when released into the environment. The beneficial element silicon (Si) can be used to reduce Cd stress. However, the mechanism for reducing Cd toxicity in Cempo Merah rice remains unclear. In this study, we conducted an experiment to determine the required potency of Si for reducing Cd toxicity in the plant. We used a randomized design with two factorials, i.e., calcium silicate and cadmium sulfate at various concentrations (0 mg kg -1 , 50 mg kg -1 , and 100 mg kg -1 ) with three replicates. The plants were maintained for 8 weeks. The measured parameters included the Cd, Si, and malondialdehyde (MDA) contents, superoxide dismutase (SOD) activity, and plant biomass. Using microscopy, we observed the anatomical root structure, including the thicknesses of the exodermis, sclerenchyma, and endodermis cell walls. The experimental results showed that an excess of Cd inhibited plant growth and increased the MDA content. Increased plant tolerance against the effect of Cd is required for their growth and survival in overcoming the negative impact of Cd exposure. As silicon is involved in the formation by roots of an apoplast barrier to limit Cd uptake, a combination of Cd and Si treatment in plants was found to produce lower Cd contents in the plant shoots and a minimum Cd translocation factor. The addition of Si was also observed to increase the SOD activity in plants under Cd stress. Therefore, Si is suggested to have potency in reducing Cd toxicity in Cempo Merah rice and increasing rice growth.
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Claims 8
Claim · model-written summary
Excess cadmium inhibited plant growth.
- Taxon
- rice
Oryza sativat0 - Material
- Cempo Meraht0
- Treatment
- excess of Cde0
- Outcome
- plant growthe0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an excess of Cd inhibited plant growth and increased the MDA content”
t0“Cempo Merah rice”
Claim · model-written summary
Excess cadmium increased MDA content.
- Taxon
- riceOryza sativat0
- Material
- Cempo Meraht0
- Treatment
- excess of Cde0
- Outcome
- MDA contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an excess of Cd inhibited plant growth and increased the MDA content”
t0“Cempo Merah rice”
Claim · model-written summary
Combined cadmium and silicon treatment produced lower cadmium contents in shoots.
- Taxon
- riceOryza sativat0
- Material
- Cempo Meraht0
- Organ / stage
- plant shootse0
- Treatment
- combination of Cd and Si treatmente0
- Outcome
- Cd contentse0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a combination of Cd and Si treatment in plants was found to produce lower Cd contents in the plant shoots and a minimum Cd translocation factor”
t0“Cempo Merah rice”
Claim · model-written summary
Combined cadmium and silicon treatment produced a minimum cadmium translocation factor.
- Taxon
- riceOryza sativat0
- Material
- Cempo Meraht0
- Treatment
- combination of Cd and Si treatmente0
- Outcome
- Cd translocation factore0
- Direction
- minimume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a combination of Cd and Si treatment in plants was found to produce lower Cd contents in the plant shoots and a minimum Cd translocation factor”
t0“Cempo Merah rice”
Claim · model-written summary
Silicon is involved in root apoplast barrier formation that limits cadmium uptake.
- Taxon
- riceOryza sativat0
- Material
- Cempo Meraht0
- Compound
- silicone0
- Outcome
- limit Cd uptakee0
- Qualifier
- formation by roots of an apoplast barriere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“silicon is involved in the formation by roots of an apoplast barrier to limit Cd uptake”
t0“Cempo Merah rice”
Claim · model-written summary
Adding silicon increased superoxide dismutase activity under cadmium stress.
- Taxon
- riceOryza sativat0
- Material
- Cempo Meraht0
- Treatment
- addition of Sie0
- Outcome
- SOD activitye0
- Direction
- increasee0
- Qualifier
- under Cd stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of Si was also observed to increase the SOD activity in plants under Cd stress”
t0“Cempo Merah rice”
Claim · model-written summary
The authors suggest silicon can reduce cadmium toxicity in Cempo Merah rice.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Si is suggested to have potency in reducing Cd toxicity in Cempo Merah rice and increasing rice growth”
Claim · model-written summary
The authors suggest silicon can increase rice growth.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Si is suggested to have potency in reducing Cd toxicity in Cempo Merah rice and increasing rice growth”
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