Abstract
Abstract The modulation of hormone and metabolite levels by ascorbate (ASA) and hydrogen peroxide (H 2 O 2 ) was compared during post‐germination growth in shoots of wheat. Treatment with ASA resulted in a greater reduction of growth than the addition of H 2 O 2 . ASA also had a larger effect on the redox state of the shoot tissues as shown by the higher ASA and glutathione (GSH) levels, lower glutathione disulfide (GSSG) content and GSSG/GSH ratio compared to the H 2 O 2 treatment. Apart from common responses (i.e., increase of cis ‐zeatin and its O ‐glucosides), the contents of several compounds related to cytokinin (CK) and abscisic acid (ABA) metabolism were greater after ASA application. These differences in the redox state and hormone metabolism following the two treatments may be responsible for their distinct influence on various metabolic pathways. Namely, the glycolysis and citrate cycle were inhibited by ASA and they were not affected by H 2 O 2 , while the amino acid metabolism was induced by ASA and repressed by H 2 O 2 based on the changes in the level of the related carbohydrates, organic and amino acids. The first two pathways produce reducing power, while the last one needs it; therefore ASA, as a reductant may suppress and induce them, respectively. H 2 O 2 as an oxidant had different effect, namely it did not alter glycolysis and citrate cycle, and inhibited the formation of amino acids.
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Claims 9
Claim · model-written summary
Ascorbate reduced wheat shoot growth more than hydrogen peroxide.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- ASAe0
- Outcome
- growthe0
- Direction
- greater reductione0
- Comparator
- H 2 O 2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment with ASA resulted in a greater reduction of growth than the addition of H 2 O 2 .”
t0“Effect of ascorbate and hydrogen peroxide on hormone and metabolite levels during post‐germination growth in wheat”
Claim · model-written summary
Ascorbate increased shoot ASA and GSH levels relative to hydrogen peroxide.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- shoot tissuese0
- Treatment
- ASAe0
- Outcome
- ASA and glutathione (GSH) levelse0
- Direction
- highere0
- Comparator
- H 2 O 2 treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ASA also had a larger effect on the redox state of the shoot tissues as shown by the higher ASA and glutathione (GSH) levels, lower glutathione disulfide (GSSG) content and GSSG/GSH ratio compared to the H 2 O 2 treatment.”
t0“Effect of ascorbate and hydrogen peroxide on hormone and metabolite levels during post‐germination growth in wheat”
Claim · model-written summary
Ascorbate lowered shoot GSSG content and GSSG/GSH ratio relative to hydrogen peroxide.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- shoot tissuese0
- Treatment
- ASAe0
- Outcome
- glutathione disulfide (GSSG) content and GSSG/GSH ratioe0
- Direction
- lowere0
- Comparator
- H 2 O 2 treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ASA also had a larger effect on the redox state of the shoot tissues as shown by the higher ASA and glutathione (GSH) levels, lower glutathione disulfide (GSSG) content and GSSG/GSH ratio compared to the H 2 O 2 treatment.”
t0“Effect of ascorbate and hydrogen peroxide on hormone and metabolite levels during post‐germination growth in wheat”
Claim · model-written summary
Both treatments increased cis-zeatin and its O-glucosides.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- ASAe0
- Outcome
- cis ‐zeatin and its O ‐glucosidese0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Apart from common responses (i.e., increase of cis ‐zeatin and its O ‐glucosides), the contents of several compounds related to cytokinin (CK) and abscisic acid (ABA) metabolism were greater after ASA application.”
t0“Effect of ascorbate and hydrogen peroxide on hormone and metabolite levels during post‐germination growth in wheat”
Claim · model-written summary
Ascorbate yielded greater contents of compounds related to CK and ABA metabolism.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- ASAe0
- Outcome
- contents of several compounds related to cytokinin (CK) and abscisic acid (ABA) metabolisme0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Apart from common responses (i.e., increase of cis ‐zeatin and its O ‐glucosides), the contents of several compounds related to cytokinin (CK) and abscisic acid (ABA) metabolism were greater after ASA application.”
t0“Effect of ascorbate and hydrogen peroxide on hormone and metabolite levels during post‐germination growth in wheat”
Claim · model-written summary
Ascorbate inhibited glycolysis and the citrate cycle.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- ASAe0
- Outcome
- glycolysis and citrate cyclee0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the glycolysis and citrate cycle were inhibited by ASA and they were not affected by H 2 O 2”
t0“Effect of ascorbate and hydrogen peroxide on hormone and metabolite levels during post‐germination growth in wheat”
Claim · model-written summary
Hydrogen peroxide did not affect glycolysis or the citrate cycle.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- H 2 O 2e0
- Outcome
- glycolysis and citrate cyclee0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the glycolysis and citrate cycle were inhibited by ASA and they were not affected by H 2 O 2”
t0“Effect of ascorbate and hydrogen peroxide on hormone and metabolite levels during post‐germination growth in wheat”
Claim · model-written summary
Ascorbate induced amino acid metabolism.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- ASAe0
- Outcome
- amino acid metabolisme0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the amino acid metabolism was induced by ASA and repressed by H 2 O 2 based on the changes in the level of the related carbohydrates, organic and amino acids.”
t0“Effect of ascorbate and hydrogen peroxide on hormone and metabolite levels during post‐germination growth in wheat”
Claim · model-written summary
Hydrogen peroxide repressed amino acid metabolism.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- H 2 O 2e0
- Outcome
- amino acid metabolisme0
- Direction
- repressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the amino acid metabolism was induced by ASA and repressed by H 2 O 2 based on the changes in the level of the related carbohydrates, organic and amino acids.”
t0“Effect of ascorbate and hydrogen peroxide on hormone and metabolite levels during post‐germination growth in wheat”
The same questions in other papers
ascorbate · growth · Triticum aestivum (wheat)Positive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- positive
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- positive
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See all 5 papers →hydrogen peroxide · molecular: metabolites · Triticum aestivum (wheat)Positive and negative results
7 papers in the same direction as this paper · 14 in the opposite direction
- positive
- positive
- positive
18 papers more in this group
See all 22 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.