Abstract
The effect of hydrogen sulfide (H2S) donor sodium hydrosulfide (NaHS) on the heat resistance of wheat (Triticum aestivum L.) coleoptile cells, the formation of reactive oxygen species (ROS), and the activity of the antioxidant enzymes in them was investigated. The treatment of coleoptiles with 100 µM NaHS caused transient enhancement of the generation of the superoxide anion radical (O2 •) and an increased hydrogen peroxide content. The activities of antioxidant enzymes—superoxide dismutase, catalase, and guaiacol peroxidase— and coleoptile resistance to damaging heat was later found to have increased. The biochemical and physiological effects of the hydrogen sulfide donor described above were inhibited by the treatment of wheat coleoptiles with the hydrogen peroxide scavenger dimethylthiourea, the NADPH oxidase inhibitor imidazole, the extracellular calcium chelator EGTA, and the phosphatidylinositol-specific phospholipase C inhibitor neomycin. A conclusion was made on the role of ROS generation, which is dependent on the activity of NADPH oxidase and calcium homeostasis, in the transduction of the H2S signal, which induces antioxidant enzymes and the development of plant cell heat resistance.
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Claims 9
Claim · model-written summary
NaHS transiently enhanced superoxide generation in wheat coleoptiles.
- Taxon
- wheat (Triticum aestivum L.)
Triticum aestivume1 - Organ / stage
- coleoptilese0
- Treatment
- 100 µM NaHSe0
- Outcome
- generation of the superoxide anion radical (O2 •)e0
- Direction
- enhancemente0
- Qualifier
- transiente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The treatment of coleoptiles with 100 µM NaHS caused transient enhancement of the generation of the superoxide anion radical (O2 •)”
e1“wheat (Triticum aestivum L.)”
Claim · model-written summary
NaHS increased hydrogen peroxide content in wheat coleoptiles.
- Taxon
- wheat (Triticum aestivum L.)Triticum aestivume1
- Organ / stage
- coleoptilese0
- Treatment
- 100 µM NaHSe0
- Outcome
- hydrogen peroxide contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The treatment of coleoptiles with 100 µM NaHS caused transient enhancement of the generation of the superoxide anion radical (O2 •) and an increased hydrogen peroxide content”
e1“wheat (Triticum aestivum L.)”
Claim · model-written summary
Antioxidant enzyme activities increased later in wheat coleoptiles.
- Taxon
- wheat (Triticum aestivum L.)Triticum aestivume1
- Outcome
- activities of antioxidant enzymes—superoxide dismutase, catalase, and guaiacol peroxidasee0
- Direction
- increasede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activities of antioxidant enzymes—superoxide dismutase, catalase, and guaiacol peroxidase— and coleoptile resistance to damaging heat was later found to have increased”
e1“wheat (Triticum aestivum L.)”
Claim · model-written summary
Coleoptile resistance to damaging heat increased later.
- Taxon
- wheat (Triticum aestivum L.)Triticum aestivume1
- Outcome
- coleoptile resistance to damaging heate0
- Direction
- increasede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activities of antioxidant enzymes—superoxide dismutase, catalase, and guaiacol peroxidase— and coleoptile resistance to damaging heat was later found to have increased”
e1“wheat (Triticum aestivum L.)”
Claim · model-written summary
Dimethylthiourea inhibited biochemical and physiological effects of the hydrogen sulfide donor.
- Taxon
- wheatTriticum aestivume0
- Treatment
- hydrogen peroxide scavenger dimethylthioureae0
- Outcome
- biochemical and physiological effects of the hydrogen sulfide donore0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The biochemical and physiological effects of the hydrogen sulfide donor described above were inhibited by the treatment of wheat coleoptiles with the hydrogen peroxide scavenger dimethylthiourea”
Claim · model-written summary
Imidazole inhibited biochemical and physiological effects of the hydrogen sulfide donor.
- Taxon
- wheatTriticum aestivume0
- Treatment
- NADPH oxidase inhibitor imidazolee0
- Outcome
- biochemical and physiological effects of the hydrogen sulfide donore0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The biochemical and physiological effects of the hydrogen sulfide donor described above were inhibited by the treatment of wheat coleoptiles with the hydrogen peroxide scavenger dimethylthiourea, the NADPH oxidase inhibitor imidazole”
Claim · model-written summary
EGTA inhibited biochemical and physiological effects of the hydrogen sulfide donor.
- Taxon
- wheatTriticum aestivume0
- Treatment
- extracellular calcium chelator EGTAe0
- Outcome
- biochemical and physiological effects of the hydrogen sulfide donore0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The biochemical and physiological effects of the hydrogen sulfide donor described above were inhibited by the treatment of wheat coleoptiles with the hydrogen peroxide scavenger dimethylthiourea, the NADPH oxidase inhibitor imidazole, the extracellular calcium chelator EGTA”
Claim · model-written summary
Neomycin inhibited biochemical and physiological effects of the hydrogen sulfide donor.
- Taxon
- wheatTriticum aestivume0
- Treatment
- phosphatidylinositol-specific phospholipase C inhibitor neomycine0
- Outcome
- biochemical and physiological effects of the hydrogen sulfide donore0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The biochemical and physiological effects of the hydrogen sulfide donor described above were inhibited by the treatment of wheat coleoptiles with the hydrogen peroxide scavenger dimethylthiourea, the NADPH oxidase inhibitor imidazole, the extracellular calcium chelator EGTA, and the phosphatidylinositol-specific phospholipase C inhibitor neomycin”
Claim · model-written summary
The authors infer that ROS generation dependent on NADPH oxidase and calcium homeostasis transduces the H2S signal leading to antioxidant enzymes and heat resistance.
Verbatim
e0“the role of ROS generation, which is dependent on the activity of NADPH oxidase and calcium homeostasis, in the transduction of the H2S signal, which induces antioxidant enzymes and the development of plant cell heat resistance”
t0“plant cells”
The same questions in other 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 →calcium chelator · molecular: metabolites · Triticum aestivum (wheat)Results agree
1 paper in the same direction as this paper
- negative
imidazole · molecular: metabolites · Triticum aestivum (wheat)Results agree
1 paper in the same direction as this paper
- negative
neomycin · molecular: metabolites · Triticum aestivum (wheat)Results agree
3 papers in the same direction as this paper
- negative
- negative
- negative
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.