Abstract
The growth of rice seedlings pretreated with nickel of 0.8,1.2,2.0 mmol/L was significantly inhibited. It was suggested nickel at this concentrati on range was toxic to rice seedlings. The activity of superoxide dismutase(SOD), catalase(CAT) and ascorbate peroxidase (APX) decreased, accompanied by signific ant enhancement of H 2O 2 and malonyldialdehyde (MDA) content after treatment with nickel. However, the activity of peroxidase (POD) increased. Statistical analys is indicated that there was a significantly positive correlation between H 2O 2 a nd MDA content, and a significantly negative one between MDA content and the bi omass of rice seedlings. The results showed that nickel at high concentrations a ffected the activity level of antioxidant enzymes and disturbed the metabolism o f active oxygens in rice. The accumulation of H 2O 2 and MDA contents caused b y th e process mentioned above might be one of significant physiological changes in t oxicity lead by Ni 2+ in plants, also might be an important reason by which nickel toxicity hinders the growth of plants.
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Claims 7
Claim · model-written summary
Pretreatment of rice seedlings with nickel at 0.8, 1.2 and 2.0 mmol/L significantly inhibited their growth.
- Taxon
- rice
Oryza sativae0 - Organ / stage
- seedlingse0
- Treatment
- nickel of 0.8,1.2,2.0 mmol/Le0
- Outcome
- growthe0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The growth of rice seedlings pretreated with nickel of 0.8,1.2,2.0 mmol/L was significantly inhibited”
Claim · model-written summary
Activities of SOD, CAT and APX in rice decreased after nickel treatment.
- Taxon
- riceOryza sativae2
- Treatment
- nickele1
- Outcome
- activity of superoxide dismutase(SOD), catalase(CAT) and ascorbate peroxidase (APX)e0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activity of superoxide dismutase(SOD), catalase(CAT) and ascorbate peroxidase (APX) decreased”
e1“after treatment with nickel”
e2“toxic to rice seedlings”
Claim · model-written summary
Hydrogen peroxide and MDA contents in rice rose markedly after nickel treatment.
- Taxon
- riceOryza sativae1
- Treatment
- nickele0
- Outcome
- H 2O 2 and malonyldialdehyde (MDA) contente0
- Direction
- enhancemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“signific ant enhancement of H 2O 2 and malonyldialdehyde (MDA) content after treatment with nickel”
e1“toxic to rice seedlings”
Claim · model-written summary
Peroxidase (POD) activity in rice increased after nickel treatment, unlike the other antioxidant enzymes.
- Taxon
- riceOryza sativae1
- Treatment
- nickele2
- Outcome
- activity of peroxidase (POD)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, the activity of peroxidase (POD) increased”
e1“toxic to rice seedlings”
e2“after treatment with nickel”
Claim · model-written summary
H2O2 and MDA contents were significantly positively correlated in nickel-treated rice seedlings.
- Taxon
- riceOryza sativae1
- Compound
- H 2O 2e0
- Outcome
- MDA contente0
- Direction
- positivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was a significantly positive correlation between H 2O 2 a nd MDA content”
e1“toxic to rice seedlings”
Claim · model-written summary
MDA content was significantly negatively correlated with biomass of rice seedlings.
- Taxon
- riceOryza sativae0
- Compound
- MDAe0
- Outcome
- bi omasse0
- Direction
- negativee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a significantly negative one between MDA content and the bi omass of rice seedlings”
Claim · model-written summary
The authors suggest that accumulation of H2O2 and MDA might be an important reason why nickel toxicity hinders plant growth.
- Taxon
- plantsViridiplantaee0
- Treatment
- nickel toxicitye0
- Outcome
- growthe0
Verbatim
e0“an important reason by which nickel toxicity hinders the growth of plants”
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See all 7 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.