Abstract
Abstract Anti-oxidative defense systems in wheat plants were studied as a function of zinc deficiency in solution culture under glasshouse conditions. Zinc (Zn) deficiency enhanced cyanide-insensitive superoxide dismutase activity significantly, and decreased the activity of cyanide-sensitive superoxide dismutase before the appearance of visible effects of Zn deficiency. The plants with incipient deficiency of Zn also had significantly higher activities of nonspecific peroxidase, ascorbate peroxidase, and glutathione reductase. There was an increase in the concentrations of malondialdehyde, H2O2, dehydroascorbate, glutathione-sulfhydryl, and glutathione-disulphide, and the ratios carotenoids/chlorophyll, dehydroascorbate/ascorbate, and glutathione-sulfhydryl/glutathione-disulphide. As the effects of Zn deficiency became more severe, there was greater accumulation of malondialdehyde and H2O2, and the activities superoxide dismutase, peroxidase, ascorbate peroxidase, and glutathione reductase declined, particularly that of cyanide-sensitive superoxide dismutase. Restoration of Zn supply significantly increased activities of cyanide-sensitive and total superoxide dismutase and ascorbate peroxidase, and concentration of H2O2, and decreased malondialdehyde significantly within 24 h. Induction of anti-oxidative responses to Zn deficiency occurred rapidly and before symptoms of severe Zn deficiency. There was a depression of anti-oxidative responses as Zn deficiency become more severe, suggesting a break down of these defense systems at the onset of visible effects of Zn deficiency
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Claims 11
Claim · model-written summary
Zinc deficiency significantly enhanced cyanide-insensitive superoxide dismutase activity.
- Taxon
- wheat plants
Triticum aestivumt0 - Treatment
- Zinc (Zn) deficiencye0
- Outcome
- cyanide-insensitive superoxide dismutase activitye0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zinc (Zn) deficiency enhanced cyanide-insensitive superoxide dismutase activity significantly, and decreased the activity of cyanide-sensitive superoxide dismutase before the appearance of visible effects of Zn deficiency”
t0“Wheat Plants”
Claim · model-written summary
Zinc deficiency decreased cyanide-sensitive superoxide dismutase activity before visible effects.
- Taxon
- Wheat PlantsTriticum aestivumt0
- Treatment
- Zinc (Zn) deficiencye0
- Outcome
- activity of cyanide-sensitive superoxide dismutasee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zinc (Zn) deficiency enhanced cyanide-insensitive superoxide dismutase activity significantly, and decreased the activity of cyanide-sensitive superoxide dismutase before the appearance of visible effects of Zn deficiency”
t0“Wheat Plants”
Claim · model-written summary
Incipient zinc deficiency increased nonspecific peroxidase, ascorbate peroxidase and glutathione reductase activities.
- Taxon
- Wheat PlantsTriticum aestivumt0
- Treatment
- incipient deficiency of Zne0
- Outcome
- activities of nonspecific peroxidase, ascorbate peroxidase, and glutathione reductasee0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The plants with incipient deficiency of Zn also had significantly higher activities of nonspecific peroxidase, ascorbate peroxidase, and glutathione reductase”
t0“Wheat Plants”
Claim · model-written summary
Zinc deficiency increased malondialdehyde, H2O2 and dehydroascorbate concentrations.
- Taxon
- Wheat PlantsTriticum aestivumt0
- Outcome
- concentrations of malondialdehyde, H2O2, dehydroascorbatee0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was an increase in the concentrations of malondialdehyde, H2O2, dehydroascorbate, glutathione-sulfhydryl, and glutathione-disulphide”
t0“Wheat Plants”
Claim · model-written summary
Zinc deficiency increased glutathione-sulfhydryl and glutathione-disulphide concentrations.
- Taxon
- Wheat PlantsTriticum aestivumt0
- Outcome
- glutathione-sulfhydryl, and glutathione-disulphidee0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was an increase in the concentrations of malondialdehyde, H2O2, dehydroascorbate, glutathione-sulfhydryl, and glutathione-disulphide”
t0“Wheat Plants”
Claim · model-written summary
Zinc deficiency increased carotenoids/chlorophyll, dehydroascorbate/ascorbate and glutathione ratios.
- Taxon
- Wheat PlantsTriticum aestivumt0
- Outcome
- ratios carotenoids/chlorophyll, dehydroascorbate/ascorbate, and glutathione-sulfhydryl/glutathione-disulphidee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ratios carotenoids/chlorophyll, dehydroascorbate/ascorbate, and glutathione-sulfhydryl/glutathione-disulphide”
t0“Wheat Plants”
Claim · model-written summary
More severe zinc deficiency caused greater malondialdehyde and H2O2 accumulation.
- Taxon
- Wheat PlantsTriticum aestivumt0
- Treatment
- Zn deficiencye0
- Outcome
- accumulation of malondialdehyde and H2O2e0
- Direction
- greatere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As the effects of Zn deficiency became more severe, there was greater accumulation of malondialdehyde and H2O2”
t0“Wheat Plants”
Claim · model-written summary
As zinc deficiency became severe, superoxide dismutase, peroxidase, ascorbate peroxidase and glutathione reductase activities declined.
- Taxon
- Wheat PlantsTriticum aestivumt0
- Treatment
- Zn deficiencye0
- Outcome
- activities superoxide dismutase, peroxidase, ascorbate peroxidase, and glutathione reductasee0
- Direction
- declinede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As the effects of Zn deficiency became more severe, there was greater accumulation of malondialdehyde and H2O2, and the activities superoxide dismutase, peroxidase, ascorbate peroxidase, and glutathione reductase declined, particularly that of cyanide-sensitive superoxide dismutase”
t0“Wheat Plants”
Claim · model-written summary
Restoring zinc significantly increased cyanide-sensitive and total superoxide dismutase and ascorbate peroxidase activities.
- Taxon
- Wheat PlantsTriticum aestivumt0
- Treatment
- Restoration of Zn supplye0
- Outcome
- activities of cyanide-sensitive and total superoxide dismutase and ascorbate peroxidasee0
- Direction
- increasede0
- Qualifier
- within 24 he0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Restoration of Zn supply significantly increased activities of cyanide-sensitive and total superoxide dismutase and ascorbate peroxidase, and concentration of H2O2, and decreased malondialdehyde significantly within 24 h”
t0“Wheat Plants”
Claim · model-written summary
Restoring zinc increased H2O2 concentration.
- Taxon
- Wheat PlantsTriticum aestivumt0
- Treatment
- Restoration of Zn supplye0
- Outcome
- concentration of H2O2e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Restoration of Zn supply significantly increased activities of cyanide-sensitive and total superoxide dismutase and ascorbate peroxidase, and concentration of H2O2, and decreased malondialdehyde significantly within 24 h”
t0“Wheat Plants”
Claim · model-written summary
Restoring zinc significantly decreased malondialdehyde within 24 h.
- Taxon
- Wheat PlantsTriticum aestivumt0
- Treatment
- Restoration of Zn supplye0
- Outcome
- malondialdehydee0
- Direction
- decreasede0
- Qualifier
- within 24 he0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Restoration of Zn supply significantly increased activities of cyanide-sensitive and total superoxide dismutase and ascorbate peroxidase, and concentration of H2O2, and decreased malondialdehyde significantly within 24 h”
t0“Wheat Plants”
The same questions in other papers
zinc atom · physiology: oxidative · Triticum aestivum (wheat)Results differ
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- positive
- negative
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See all 27 papers →zinc atom · physiology: antioxidant enzymes · Triticum aestivum (wheat)Results differ
21 papers in the same direction as this paper · 5 in the opposite direction
- negative
- negative
- no effect
23 papers more in this group
See all 27 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.