Abstract
The effect of exogenous H 2O 2 on antioxidant system was studied in callus tissues of drought-resistant (PAN 6043) and drought-sensitive (SC 701) cultivars of maize ( Zea mays L.). Eight day old calli were harvested and soaked with hydrogen peroxide solution (10 -4 , 10 -3 and 10 -2 mol L -1 ) for 3 h. Hydrogen peroxide damaged the calli, as indicated by the increase in leakage of electrolytes, the contents of H 2O 2 and malondiadehyde, as well as the reduction in ascorbate and carotenoid contents in the calli of the both cultivars. Hydrogen peroxide (10 -4 mol/L ) had small oxidant effect. When calli were treated by hydrogen peroxide, the activities of SOD, POD, AP and GR, and the levels of AsA and CAR remained higher in the calli of the drought resistant cultivar than those of the drought sensitive one. The results showed that the higher activity of the antioxidant system had a greater protective effect against oxidative stress caused by hydrogen peroxide in drough resistant cultivar than in the drought sensitive cultivar.
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Claims 7
Claim · model-written summary
Hydrogen peroxide increased electrolyte leakage and H2O2 and malondialdehyde contents in both maize callus cultivars.
- Material
- drought-resistant (PAN 6043) and drought-sensitive (SC 701) cultivarse0
- Organ / stage
- callus tissuese0
- Treatment
- Hydrogen peroxidee1
- Outcome
- leakage of electrolytes, the contents of H 2O 2 and malondiadehydee1
- Direction
- increasee1
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“callus tissues of drought-resistant (PAN 6043) and drought-sensitive (SC 701) cultivars of maize ( Zea mays L.)”
e1“Hydrogen peroxide damaged the calli, as indicated by the increase in leakage of electrolytes, the contents of H 2O 2 and malondiadehyde, as well as the reduction in ascorbate and carotenoid contents in the calli of the both cultivars”
Claim · model-written summary
Hydrogen peroxide reduced ascorbate and carotenoid contents in both maize callus cultivars.
- Material
- drought-resistant (PAN 6043) and drought-sensitive (SC 701) cultivarse0
- Organ / stage
- callus tissuese0
- Treatment
- Hydrogen peroxidee1
- Outcome
- ascorbate and carotenoid contentse1
- Direction
- reductione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“callus tissues of drought-resistant (PAN 6043) and drought-sensitive (SC 701) cultivars of maize ( Zea mays L.)”
e1“Hydrogen peroxide damaged the calli, as indicated by the increase in leakage of electrolytes, the contents of H 2O 2 and malondiadehyde, as well as the reduction in ascorbate and carotenoid contents in the calli of the both cultivars”
Claim · model-written summary
Hydrogen peroxide at 10^-4 mol/L had a small oxidant effect on maize callus.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“callus tissues of drought-resistant (PAN 6043) and drought-sensitive (SC 701) cultivars of maize ( Zea mays L.)”
e2“Hydrogen peroxide (10 -4 mol/L ) had small oxidant effect”
Claim · model-written summary
Under hydrogen peroxide, SOD, POD and AP activities were higher in the drought-resistant maize callus than in the drought-sensitive one.
- Material
- PAN 6043e0
- Organ / stage
- callie4
- Treatment
- hydrogen peroxidee4
- Outcome
- activities of SOD, POD, APe4
- Direction
- highere4
- Comparator
- those of the drought sensitive onee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“callus tissues of drought-resistant (PAN 6043) and drought-sensitive (SC 701) cultivars of maize ( Zea mays L.)”
e4“When calli were treated by hydrogen peroxide, the activities of SOD, POD, AP and GR, and the levels of AsA and CAR remained higher in the calli of the drought resistant cultivar than those of the drought sensitive one”
Claim · model-written summary
Under hydrogen peroxide, GR activity was higher in the drought-resistant maize callus than in the drought-sensitive one.
- Material
- PAN 6043e0
- Organ / stage
- callie4
- Treatment
- hydrogen peroxidee4
- Outcome
- GRe4
- Direction
- highere4
- Comparator
- those of the drought sensitive onee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“callus tissues of drought-resistant (PAN 6043) and drought-sensitive (SC 701) cultivars of maize ( Zea mays L.)”
e4“When calli were treated by hydrogen peroxide, the activities of SOD, POD, AP and GR, and the levels of AsA and CAR remained higher in the calli of the drought resistant cultivar than those of the drought sensitive one”
Claim · model-written summary
Under hydrogen peroxide, AsA and CAR levels were higher in the drought-resistant maize callus than in the drought-sensitive one.
- Material
- PAN 6043e0
- Organ / stage
- callie4
- Treatment
- hydrogen peroxidee4
- Outcome
- the levels of AsA and CARe4
- Direction
- highere4
- Comparator
- those of the drought sensitive onee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“callus tissues of drought-resistant (PAN 6043) and drought-sensitive (SC 701) cultivars of maize ( Zea mays L.)”
e4“When calli were treated by hydrogen peroxide, the activities of SOD, POD, AP and GR, and the levels of AsA and CAR remained higher in the calli of the drought resistant cultivar than those of the drought sensitive one”
Claim · model-written summary
Higher antioxidant-system activity gave a greater protective effect against hydrogen peroxide-induced oxidative stress in the drought-resistant cultivar.
- Outcome
- greater protective effect against oxidative stresse7
- Qualifier
- higher activity of the antioxidant systeme7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“callus tissues of drought-resistant (PAN 6043) and drought-sensitive (SC 701) cultivars of maize ( Zea mays L.)”
e7“The results showed that the higher activity of the antioxidant system had a greater protective effect against oxidative stress caused by hydrogen peroxide in drough resistant cultivar than in the drought sensitive cultivar”
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See all 8 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.