Abstract
Physiological and biochemical responses of wheat seedlings to drought, UV-B radiation, and combined stress were investigated. Drought, UV-B, and combined stresses retarded seedling growth by 26.5, 29.1, and 55.9%, respectively. One reason for growth retardation may be the oxidative damage indicated by an increase in the H2O2 content and lipid peroxidation degree. Furthermore, there was negative correlation between shoot fresh weight and H2O2 content, fresh weight and the content of thiobarbituric acid-reacting substances (TBARS), and the positive correlation between H2O2 content and TBARS (R 2 = 0.9251, 0.9005, and 0.9007, respectively). The activities of superoxide dismutase, guaiacol peroxidase, and ascorbate peroxidase increased under drought, UV-B, and the combination of stresses, while catalase activity decreased under the combined stress as compared to the control. The combination of drought and UV-B caused more severe damage to wheat seedlings than stress factors applied separately. Thus, the combined application of drought and UV-B had more strong adverse effects on wheat seedlings. The addition of 0.2 mM sodium nitroprusside (SNP) enhanced wheat seedling growth under drought, UV-B, and combined stress, likely, due to decreasing the accumulation of H2O2 and lipid peroxidation as well as activating the antioxidant enzymes. However, SNP treatment decreased the proline content.
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Claims 15
Claim · model-written summary
Drought retarded wheat seedling growth by 26.5%.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- Droughte1
- Outcome
- seedling growthe1
- Direction
- retardede1
- Value
- 26.5e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Physiological and biochemical responses of wheat seedlings to drought, UV-B radiation, and combined stress were investigated”
e1“Drought, UV-B, and combined stresses retarded seedling growth by 26.5, 29.1, and 55.9%, respectively”
Claim · model-written summary
UV-B radiation retarded wheat seedling growth by 29.1%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Physiological and biochemical responses of wheat seedlings to drought, UV-B radiation, and combined stress were investigated”
e1“Drought, UV-B, and combined stresses retarded seedling growth by 26.5, 29.1, and 55.9%, respectively”
Claim · model-written summary
The combined stress retarded wheat seedling growth by 55.9%.
- Taxon
- wheatTriticum aestivume0
- Treatment
- combined stresse1
- Outcome
- seedling growthe1
- Direction
- retardede1
- Value
- 55.9%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Physiological and biochemical responses of wheat seedlings to drought, UV-B radiation, and combined stress were investigated”
e1“Drought, UV-B, and combined stresses retarded seedling growth by 26.5, 29.1, and 55.9%, respectively”
Claim · model-written summary
Shoot fresh weight was negatively correlated with H2O2 content in wheat seedlings (R2 = 0.9251).
- Taxon
- wheatTriticum aestivume0
- Compound
- H2O2e2
- Outcome
- shoot fresh weighte2
- Value
- 0.9251e3
- Qualifier
- negative correlatione2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Physiological and biochemical responses of wheat seedlings to drought, UV-B radiation, and combined stress were investigated”
e2“there was negative correlation between shoot fresh weight and H2O2 content”
e3“R 2 = 0.9251, 0.9005, and 0.9007, respectively”
Claim · model-written summary
Fresh weight was negatively correlated with TBARS content in wheat seedlings (R2 = 0.9005).
- Taxon
- wheatTriticum aestivume0
- Compound
- thiobarbituric acid-reacting substances (TBARS)e4
- Outcome
- fresh weighte4
- Value
- 0.9005e3
- Qualifier
- negative correlatione2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Physiological and biochemical responses of wheat seedlings to drought, UV-B radiation, and combined stress were investigated”
e2“there was negative correlation between shoot fresh weight and H2O2 content”
e4“fresh weight and the content of thiobarbituric acid-reacting substances (TBARS)”
e3“R 2 = 0.9251, 0.9005, and 0.9007, respectively”
Claim · model-written summary
H2O2 content was positively correlated with TBARS content in wheat seedlings (R2 = 0.9007).
- Taxon
- wheatTriticum aestivume0
- Compound
- H2O2e5
- Outcome
- TBARSe5
- Value
- 0.9007e3
- Qualifier
- positive correlatione5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Physiological and biochemical responses of wheat seedlings to drought, UV-B radiation, and combined stress were investigated”
e5“the positive correlation between H2O2 content and TBARS”
e3“R 2 = 0.9251, 0.9005, and 0.9007, respectively”
Claim · model-written summary
Drought increased the activities of superoxide dismutase, guaiacol peroxidase and ascorbate peroxidase in wheat seedlings.
- Taxon
- wheatTriticum aestivume0
- Treatment
- droughte6
- Outcome
- activities of superoxide dismutase, guaiacol peroxidase, and ascorbate peroxidasee6
- Direction
- increasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Physiological and biochemical responses of wheat seedlings to drought, UV-B radiation, and combined stress were investigated”
e6“The activities of superoxide dismutase, guaiacol peroxidase, and ascorbate peroxidase increased under drought, UV-B, and the combination of stresses, while catalase activity decreased under the combined stress as compared to the control”
Claim · model-written summary
UV-B increased the activities of superoxide dismutase, guaiacol peroxidase and ascorbate peroxidase in wheat seedlings.
- Taxon
- wheatTriticum aestivume0
- Treatment
- UV-Be6
- Outcome
- activities of superoxide dismutase, guaiacol peroxidase, and ascorbate peroxidasee6
- Direction
- increasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Physiological and biochemical responses of wheat seedlings to drought, UV-B radiation, and combined stress were investigated”
e6“The activities of superoxide dismutase, guaiacol peroxidase, and ascorbate peroxidase increased under drought, UV-B, and the combination of stresses, while catalase activity decreased under the combined stress as compared to the control”
Claim · model-written summary
The combination of stresses increased the activities of superoxide dismutase, guaiacol peroxidase and ascorbate peroxidase in wheat seedlings.
- Taxon
- wheatTriticum aestivume0
- Treatment
- the combination of stressese6
- Outcome
- activities of superoxide dismutase, guaiacol peroxidase, and ascorbate peroxidasee6
- Direction
- increasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Physiological and biochemical responses of wheat seedlings to drought, UV-B radiation, and combined stress were investigated”
e6“The activities of superoxide dismutase, guaiacol peroxidase, and ascorbate peroxidase increased under drought, UV-B, and the combination of stresses, while catalase activity decreased under the combined stress as compared to the control”
Claim · model-written summary
Under the combined stress, catalase activity decreased compared with the control in wheat seedlings.
- Taxon
- wheatTriticum aestivume0
- Treatment
- combined stresse6
- Outcome
- catalase activitye6
- Direction
- decreasede6
- Comparator
- the controle6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Physiological and biochemical responses of wheat seedlings to drought, UV-B radiation, and combined stress were investigated”
e6“The activities of superoxide dismutase, guaiacol peroxidase, and ascorbate peroxidase increased under drought, UV-B, and the combination of stresses, while catalase activity decreased under the combined stress as compared to the control”
Claim · model-written summary
The combination of drought and UV-B caused more severe damage to wheat seedlings than the stress factors applied separately.
- Taxon
- wheat seedlingsTriticum aestivume7
- Treatment
- The combination of drought and UV-Be7
- Outcome
- damage to wheat seedlingse7
- Direction
- more severee7
- Comparator
- stress factors applied separatelye7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“The combination of drought and UV-B caused more severe damage to wheat seedlings than stress factors applied separately”
Claim · model-written summary
Sodium nitroprusside at 0.2 mM enhanced wheat seedling growth under drought, UV-B and combined stress.
- Taxon
- wheatTriticum aestivume0
- Treatment
- 0.2 mM sodium nitroprusside (SNP)e1
- Outcome
- seedling growthe1
- Direction
- enhancede1
- Qualifier
- under drought, UV-B, and combined stresse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Physiological and biochemical responses of wheat seedlings to drought, UV-B radiation, and combined stress were investigated”
e1“The addition of 0.2 mM sodium nitroprusside (SNP) enhanced wheat seedling growth under drought, UV-B, and combined stress”
Claim · model-written summary
Sodium nitroprusside may enhance seedling growth by decreasing H2O2 accumulation and lipid peroxidation.
- Taxon
- wheatTriticum aestivume0
- Compound
- H2O2e2
- Outcome
- seedling growthe1
- Qualifier
- decreasing the accumulation of H2O2 and lipid peroxidatione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Physiological and biochemical responses of wheat seedlings to drought, UV-B radiation, and combined stress were investigated”
e1“The addition of 0.2 mM sodium nitroprusside (SNP) enhanced wheat seedling growth under drought, UV-B, and combined stress”
e2“likely, due to decreasing the accumulation of H2O2 and lipid peroxidation as well as activating the antioxidant enzymes”
Claim · model-written summary
Sodium nitroprusside treatment decreased the proline content of wheat seedlings.
- Taxon
- wheatTriticum aestivume0
- Treatment
- SNP treatmente1
- Outcome
- proline contente1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Physiological and biochemical responses of wheat seedlings to drought, UV-B radiation, and combined stress were investigated”
e1“However, SNP treatment decreased the proline content”
Claim · model-written summary
Wheat seedlings showed an increase in H2O2 content and lipid peroxidation degree, indicating oxidative damage.
- Taxon
- wheatTriticum aestivume0
- Compound
- H2O2e1
- Outcome
- increase in the H2O2 content and lipid peroxidation degreee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Physiological and biochemical responses of wheat seedlings to drought, UV-B radiation, and combined stress were investigated”
e1“One reason for growth retardation may be the oxidative damage indicated by an increase in the H2O2 content and lipid peroxidation degree”
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