Abstract
We investigated the protective role of exogenous nitric oxide (NO) in alleviating high temperature induced damages of wheat (Triticum aestivum L. cv. Pradip) seedlings. Heat treatment (38 degrees C) alone or in combination with 0.5 mM SNP (a NO donor) was applied with nutrient solution on 8-d-old hydroponically grown seedlings for a period of 24 h and 48 h. Heat stress significantly decreased the Chl content and increased the lipid peroxidation (MDA) and H2O2 levels in time depending manners. Ascorbate (AsA) content markedly decreased upon heat treatment but glutathione (GSH) and glutathione disulfide (GSSG) content increased. Heat treatment resulted in an increase of the activities of antioxidant enzymes - ascorbate peroxidase (APX), glutathione reductase (GR), glutathione peroxidase (GPX) and glutathione S-transferase (GST). The activities of glyoxalase enzymes also increased upon heat stress. Exogenous NO supplementation in the seedlings had little influence on the nonenzymatic and enzymatic components compared to the control. However, supplementation of heat-treated seedlings with SNP significantly reduced the high temperature induced lipid peroxidation, H2O2 content and increased the content of Chl, AsA and GSH as well as the GSH/GSSG ratio. Heat treated seedlings which were supplemented with SNP also upregulated the activities of APX, MDHAR, DHAR, GR, GST, CAT and Gly I. This study concludes that an exogenous supply of NO protects wheat seedlings from high temperature induced oxidative stress by upregulating antioxidant defense and methylglyoxal (MG) detoxification system.
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Claims 14
Claim · model-written summary
Heat reduced chlorophyll content.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- Heat stresse1
- Outcome
- Chl contente1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat (Triticum aestivum L. cv. Pradip) seedlings”
e1“Heat stress significantly decreased the Chl content”
Claim · model-written summary
Heat increased lipid peroxidation and H2O2 levels over time.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Heat stresse2
- Outcome
- lipid peroxidation (MDA) and H2O2 levelse1
- Direction
- increasede1
- Qualifier
- in time depending mannerse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat (Triticum aestivum L. cv. Pradip) seedlings”
e1“increased the lipid peroxidation (MDA) and H2O2 levels in time depending manners”
e2“Heat stress significantly decreased”
Claim · model-written summary
Heat markedly reduced ascorbate content.
- Taxon
- wheatTriticum aestivume0
- Treatment
- heat treatmente1
- Outcome
- Ascorbate (AsA) contente1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat (Triticum aestivum L. cv. Pradip) seedlings”
e1“Ascorbate (AsA) content markedly decreased upon heat treatment”
Claim · model-written summary
Heat increased GSH and GSSG content.
- Taxon
- wheatTriticum aestivume0
- Treatment
- heat treatmente2
- Outcome
- glutathione (GSH) and glutathione disulfide (GSSG) contente1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat (Triticum aestivum L. cv. Pradip) seedlings”
e1“glutathione (GSH) and glutathione disulfide (GSSG) content increased”
e2“upon heat treatment”
Claim · model-written summary
Heat increased APX, GR and GPX activities.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Heat treatmente1
- Outcome
- ascorbate peroxidase (APX), glutathione reductase (GR), glutathione peroxidase (GPX)e1
- Direction
- increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat (Triticum aestivum L. cv. Pradip) seedlings”
e1“Heat treatment resulted in an increase of the activities of antioxidant enzymes - ascorbate peroxidase (APX), glutathione reductase (GR), glutathione peroxidase (GPX) and glutathione S-transferase (GST)”
Claim · model-written summary
Heat increased GST activity.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Heat treatmente1
- Outcome
- glutathione S-transferase (GST)e1
- Direction
- increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat (Triticum aestivum L. cv. Pradip) seedlings”
e1“Heat treatment resulted in an increase of the activities of antioxidant enzymes - ascorbate peroxidase (APX), glutathione reductase (GR), glutathione peroxidase (GPX) and glutathione S-transferase (GST)”
Claim · model-written summary
Heat increased glyoxalase enzyme activities.
- Taxon
- wheatTriticum aestivume0
- Treatment
- heat stresse1
- Outcome
- activities of glyoxalase enzymese1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat (Triticum aestivum L. cv. Pradip) seedlings”
e1“The activities of glyoxalase enzymes also increased upon heat stress”
Claim · model-written summary
Exogenous NO alone had little effect on nonenzymatic and enzymatic components compared with control.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Exogenous NO supplementatione1
- Outcome
- nonenzymatic and enzymatic componentse1
- Direction
- little influencee1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat (Triticum aestivum L. cv. Pradip) seedlings”
e1“Exogenous NO supplementation in the seedlings had little influence on the nonenzymatic and enzymatic components compared to the control”
Claim · model-written summary
SNP under heat significantly reduced lipid peroxidation and H2O2 content.
- Taxon
- wheatTriticum aestivume0
- Treatment
- SNPe1
- Outcome
- lipid peroxidation, H2O2 contente1
- Direction
- reducede1
- Comparator
- heat-treated seedlingse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat (Triticum aestivum L. cv. Pradip) seedlings”
e1“supplementation of heat-treated seedlings with SNP significantly reduced the high temperature induced lipid peroxidation, H2O2 content”
Claim · model-written summary
SNP under heat increased Chl, AsA and GSH content.
- Taxon
- wheatTriticum aestivume0
- Treatment
- SNPe1
- Outcome
- content of Chl, AsA and GSHe1
- Direction
- increasede1
- Comparator
- heat-treated seedlingse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat (Triticum aestivum L. cv. Pradip) seedlings”
e1“supplementation of heat-treated seedlings with SNP significantly reduced the high temperature induced lipid peroxidation, H2O2 content and increased the content of Chl, AsA and GSH as well as the GSH/GSSG ratio”
Claim · model-written summary
SNP under heat increased the GSH/GSSG ratio.
- Taxon
- wheatTriticum aestivume0
- Treatment
- SNPe1
- Outcome
- GSH/GSSG ratioe1
- Direction
- increasede1
- Comparator
- heat-treated seedlingse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat (Triticum aestivum L. cv. Pradip) seedlings”
e1“supplementation of heat-treated seedlings with SNP significantly reduced the high temperature induced lipid peroxidation, H2O2 content and increased the content of Chl, AsA and GSH as well as the GSH/GSSG ratio”
Claim · model-written summary
SNP under heat upregulated APX, MDHAR and DHAR activities.
- Taxon
- wheatTriticum aestivume0
- Treatment
- SNPe1
- Outcome
- activities of APX, MDHAR, DHARe1
- Direction
- upregulatede1
- Comparator
- Heat treated seedlingse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat (Triticum aestivum L. cv. Pradip) seedlings”
e1“Heat treated seedlings which were supplemented with SNP also upregulated the activities of APX, MDHAR, DHAR, GR, GST, CAT and Gly I”
Claim · model-written summary
SNP under heat upregulated GR, GST and CAT activities.
- Taxon
- wheatTriticum aestivume0
- Treatment
- SNPe1
- Outcome
- GR, GST, CATe1
- Direction
- upregulatede1
- Comparator
- Heat treated seedlingse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat (Triticum aestivum L. cv. Pradip) seedlings”
e1“Heat treated seedlings which were supplemented with SNP also upregulated the activities of APX, MDHAR, DHAR, GR, GST, CAT and Gly I”
Claim · model-written summary
SNP under heat upregulated Gly I activity.
- Taxon
- wheatTriticum aestivume0
- Treatment
- SNPe1
- Outcome
- Gly Ie1
- Direction
- upregulatede1
- Comparator
- Heat treated seedlingse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat (Triticum aestivum L. cv. Pradip) seedlings”
e1“Heat treated seedlings which were supplemented with SNP also upregulated the activities of APX, MDHAR, DHAR, GR, GST, CAT and Gly I”
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See all 13 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.