Abstract
The effect of hydrogen peroxide treatment on the salt tolerance of wild-type Arabidopsis thaliana L. plants (Col-0) and plants transformed with the bacterial salicylate hydroxylase gene (NahG) was studied. The base tolerance to salt stress caused by 200 mM of NaCl in solution culture was higher in plants with the NahG genotype in comparison with the wild-type plants. Growth inhibition was observed for wild-type plants under the action of exogenous hydrogen peroxide, which was not observed for the NahG transformants; salt tolerance increased in the both types of plants after treatment, which was assessed based on the growth indicators and the ability to preserve the chlorophyll pool following NaCl treatment. The content of endogenous Н2О2 in the leaves of wild-type plants increased significantly following exogenous hydrogen peroxide treatment and salt stress, while it practically did not change in the leaves of the NahG genotype. The SOD activity increased in both genotypes after treatment with exogenous hydrogen peroxide, and remained at an elevated level after salt stress in comparison with the nontreated plants. Furthermore, the catalase activity increased in leaves of the salicylate-deficient genotype but not in the Col-0 genotype. The guaiacol peroxidase activity increased in plants of both genotypes under the action of hydrogen peroxide and salt stress, with the NahG plants demonstrating a higher degree of increase. The Н2О2 treatment facilitated the increase of the proline content in leaves of the plants of both genotypes under conditions of salt stress. It was concluded that there were hydrogen peroxide signal transduction pathways in Arabidopsis plants that were salicylic acid independent and that the antioxidant system functioned more effectively in salicylate-deficient Arabidopsis plants.
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Claims 14
Claim · model-written summary
Base tolerance to salt stress (200 mM NaCl in solution culture) was higher in NahG Arabidopsis plants than in wild-type plants.
- Taxon
- Arabidopsis
Arabidopsist0 - Material
- NahG genotypee1
- Treatment
- 200 mM of NaCle1
- Outcome
- tolerance to salt stresse1
- Direction
- highere1
- Comparator
- wild-type plantse1
- Setting
- solution culturee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis”
e1“The base tolerance to salt stress caused by 200 mM of NaCl in solution culture was higher in plants with the NahG genotype in comparison with the wild-type plants”
Claim · model-written summary
Exogenous hydrogen peroxide inhibited growth of wild-type Arabidopsis plants.
- Taxon
- ArabidopsisArabidopsist0
- Material
- wild-type plantse2
- Treatment
- exogenous hydrogen peroxidee2
- Outcome
- Growthe2
- Direction
- inhibitione2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis”
e2“Growth inhibition was observed for wild-type plants under the action of exogenous hydrogen peroxide, which was not observed for the NahG transformants”
Claim · model-written summary
Exogenous hydrogen peroxide did not cause growth inhibition in NahG transformants.
- Taxon
- ArabidopsisArabidopsist0
- Material
- NahG transformantse2
- Treatment
- exogenous hydrogen peroxidee2
- Outcome
- Growth inhibitione2
- Direction
- not observede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis”
e2“Growth inhibition was observed for wild-type plants under the action of exogenous hydrogen peroxide, which was not observed for the NahG transformants”
Claim · model-written summary
Hydrogen peroxide treatment increased salt tolerance in both wild-type and NahG plants, assessed from growth indicators and chlorophyll preservation after NaCl.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- Hydrogen peroxidet1
- Outcome
- salt tolerancee3
- Direction
- increasede3
- Qualifier
- growth indicators and the ability to preserve the chlorophyll poole3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis”
t1“Hydrogen peroxide”
e3“salt tolerance increased in the both types of plants after treatment, which was assessed based on the growth indicators and the ability to preserve the chlorophyll pool following NaCl treatment”
Claim · model-written summary
Endogenous H2O2 content in leaves of wild-type plants increased significantly after exogenous hydrogen peroxide treatment and salt stress.
- Taxon
- ArabidopsisArabidopsist0
- Material
- wild-type plantse4
- Organ / stage
- leavese4
- Treatment
- exogenous hydrogen peroxide treatment and salt stresse4
- Outcome
- content of endogenous Н2О2e4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis”
e4“The content of endogenous Н2О2 in the leaves of wild-type plants increased significantly following exogenous hydrogen peroxide treatment and salt stress, while it practically did not change in the leaves of the NahG genotype”
Claim · model-written summary
Endogenous H2O2 content in leaves of the NahG genotype practically did not change after the treatments.
- Taxon
- ArabidopsisArabidopsist0
- Material
- NahG genotypee4
- Organ / stage
- leavese4
- Treatment
- exogenous hydrogen peroxide treatment and salt stresse4
- Outcome
- content of endogenous Н2О2e4
- Direction
- practically did not changee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis”
e4“The content of endogenous Н2О2 in the leaves of wild-type plants increased significantly following exogenous hydrogen peroxide treatment and salt stress, while it practically did not change in the leaves of the NahG genotype”
Claim · model-written summary
SOD activity increased in both genotypes after exogenous hydrogen peroxide and stayed elevated after salt stress compared with nontreated plants.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- exogenous hydrogen peroxidee5
- Outcome
- SOD activitye5
- Direction
- increasede5
- Qualifier
- remained at an elevated level after salt stresse5
- Comparator
- nontreated plantse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis”
e5“The SOD activity increased in both genotypes after treatment with exogenous hydrogen peroxide, and remained at an elevated level after salt stress in comparison with the nontreated plants”
Claim · model-written summary
Catalase activity increased in leaves of the salicylate-deficient genotype.
- Taxon
- ArabidopsisArabidopsist0
- Material
- salicylate-deficient genotypee6
- Organ / stage
- leavese6
- Outcome
- catalase activitye6
- Direction
- increasede6
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis”
e6“the catalase activity increased in leaves of the salicylate-deficient genotype but not in the Col-0 genotype”
Claim · model-written summary
Catalase activity did not increase in leaves of the Col-0 genotype.
- Taxon
- ArabidopsisArabidopsist0
- Material
- Col-0 genotypee6
- Outcome
- catalase activitye6
- Direction
- note6
Not reportedOrgan / stageTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis”
e6“the catalase activity increased in leaves of the salicylate-deficient genotype but not in the Col-0 genotype”
Claim · model-written summary
Guaiacol peroxidase activity increased in both genotypes under hydrogen peroxide and salt stress.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- hydrogen peroxide and salt stresse7
- Outcome
- guaiacol peroxidase activitye7
- Direction
- increasede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis”
e7“The guaiacol peroxidase activity increased in plants of both genotypes under the action of hydrogen peroxide and salt stress, with the NahG plants demonstrating a higher degree of increase”
Claim · model-written summary
The increase in guaiacol peroxidase activity was higher in NahG plants than in the other genotype.
- Taxon
- ArabidopsisArabidopsist0
- Material
- NahG plantse7
- Outcome
- guaiacol peroxidase activitye7
- Direction
- higher degree of increasee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis”
e7“The guaiacol peroxidase activity increased in plants of both genotypes under the action of hydrogen peroxide and salt stress, with the NahG plants demonstrating a higher degree of increase”
Claim · model-written summary
Hydrogen peroxide treatment increased proline content in leaves of both genotypes under salt stress.
- Taxon
- ArabidopsisArabidopsist0
- Organ / stage
- leavese0
- Treatment
- Н2О2 treatmente0
- Outcome
- proline contente0
- Direction
- increasee0
- Qualifier
- under conditions of salt stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Arabidopsis”
e0“The Н2О2 treatment facilitated the increase of the proline content in leaves of the plants of both genotypes under conditions of salt stress”
Claim · model-written summary
The authors concluded that Arabidopsis has hydrogen peroxide signal transduction pathways that are salicylic acid independent.
- Taxon
- ArabidopsisArabidopsise1
- Outcome
- hydrogen peroxide signal transduction pathwayse1
- Qualifier
- salicylic acid independente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“It was concluded that there were hydrogen peroxide signal transduction pathways in Arabidopsis plants that were salicylic acid independent”
Claim · model-written summary
The authors concluded that the antioxidant system functioned more effectively in salicylate-deficient Arabidopsis plants.
- Taxon
- ArabidopsisArabidopsise2
- Material
- salicylate-deficiente2
- Outcome
- antioxidant systeme2
- Direction
- more effectivelye2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“the antioxidant system functioned more effectively in salicylate-deficient Arabidopsis plants”
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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.