Abstract
The involvement of nitric oxide (NO) and hydrogen peroxide (H 2 O 2 ) in the formation of heat resistance induced by 1-min-long treatment with a temperature of 42°C in 3-day-old seedlings of winter soft wheat ( Triticum aestivum L., cv. Elegiya) was studied. The content of NO in the roots was increased within 2 h after seedling hardening heating. The content of H 2 O 2 was increased within 30 min after heating. This effect was neutralized when seedlings were treated with the nitric oxide scavenger PTIO (2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide) and the inhibitor of NO synthase L-NAME (N G -nitro-L-arginine methyl ester). Seedling treatment with the antioxidants ionol and dimethylthiourea (DMTU) reduced the hardening-induced nitric oxide accumulation in tissues. When seedlings were treated with the NO donor sodium nitroprusside (SNP), the amount of endogenous NO and H 2 O 2 in them increased; exogenous hydrogen peroxide affected similarly. Hardening heating and treatment with SNP and hydrogen peroxide increased seedling resistance to damaging heating, whereas NO antagonists (PTIO and L-NAME) and antioxidants (ionol and DMTU) prevented the development of seedling heat resistance after hardening heating. It is concluded that, during the induction of wheat seedling heat resistance by the hardening heating, functional interaction between NO and H 2 O 2 as signaling messengers occurs.
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Claims 16
Claim · model-written summary
NO content in wheat roots increased within 2 h after hardening heating.
- Taxon
- Triticum aestivum L.
Triticum aestivume1 - Material
- cv. Elegiyae1
- Organ / stage
- rootse0
- Treatment
- seedling hardening heatinge0
- Outcome
- content of NOe0
- Direction
- increasede0
- Qualifier
- within 2 he0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content of NO in the roots was increased within 2 h after seedling hardening heating”
e1“winter soft wheat ( Triticum aestivum L., cv. Elegiya)”
Claim · model-written summary
H2O2 content in wheat seedlings increased within 30 min after heating.
- Taxon
- Triticum aestivum L.Triticum aestivume1
- Material
- cv. Elegiyae1
- Treatment
- heatinge0
- Outcome
- content of H 2 O 2e0
- Direction
- increasede0
- Qualifier
- within 30 mine0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content of H 2 O 2 was increased within 30 min after heating”
e1“winter soft wheat ( Triticum aestivum L., cv. Elegiya)”
Claim · model-written summary
Seedlings treated with the NO donor sodium nitroprusside (SNP) had increased endogenous NO and H2O2 amounts.
- Taxon
- Triticum aestivum L.Triticum aestivume1
- Material
- cv. Elegiyae1
- Treatment
- NO donor sodium nitroprusside (SNP)e0
- Outcome
- amount of endogenous NO and H 2 O 2e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When seedlings were treated with the NO donor sodium nitroprusside (SNP), the amount of endogenous NO and H 2 O 2 in them increased”
e1“winter soft wheat ( Triticum aestivum L., cv. Elegiya)”
Claim · model-written summary
Exogenous hydrogen peroxide affected endogenous NO and H2O2 amounts similarly, i.e. increased them.
- Taxon
- Triticum aestivum L.Triticum aestivume1
- Material
- cv. Elegiyae1
- Treatment
- exogenous hydrogen peroxidee0
- Outcome
- amount of endogenous NO and H 2 O 2e0
- Direction
- increaseinferrede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the amount of endogenous NO and H 2 O 2 in them increased; exogenous hydrogen peroxide affected similarly”
e1“winter soft wheat ( Triticum aestivum L., cv. Elegiya)”
Claim · model-written summary
Hardening heating increased wheat seedling resistance to damaging heating.
- Taxon
- Triticum aestivum L.Triticum aestivume1
- Material
- cv. Elegiyae1
- Treatment
- Hardening heatinge0
- Outcome
- seedling resistance to damaging heatinge0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hardening heating and treatment with SNP and hydrogen peroxide increased seedling resistance to damaging heating”
e1“winter soft wheat ( Triticum aestivum L., cv. Elegiya)”
Claim · model-written summary
Treatment with SNP increased wheat seedling resistance to damaging heating.
- Taxon
- Triticum aestivum L.Triticum aestivume1
- Material
- cv. Elegiyae1
- Treatment
- SNPe0
- Outcome
- seedling resistance to damaging heatinge0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hardening heating and treatment with SNP and hydrogen peroxide increased seedling resistance to damaging heating”
e1“winter soft wheat ( Triticum aestivum L., cv. Elegiya)”
Claim · model-written summary
Hydrogen peroxide treatment increased wheat seedling resistance to damaging heating.
- Taxon
- Triticum aestivum L.Triticum aestivume1
- Material
- cv. Elegiyae1
- Treatment
- hydrogen peroxidee0
- Outcome
- seedling resistance to damaging heatinge0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hardening heating and treatment with SNP and hydrogen peroxide increased seedling resistance to damaging heating”
e1“winter soft wheat ( Triticum aestivum L., cv. Elegiya)”
Claim · model-written summary
The NO antagonist PTIO prevented the development of wheat seedling heat resistance after hardening heating.
- Taxon
- Triticum aestivum L.Triticum aestivume1
- Material
- cv. Elegiyae1
- Treatment
- PTIOe0
- Outcome
- development of seedling heat resistancee0
- Direction
- preventede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whereas NO antagonists (PTIO and L-NAME) and antioxidants (ionol and DMTU) prevented the development of seedling heat resistance after hardening heating”
e1“winter soft wheat ( Triticum aestivum L., cv. Elegiya)”
Claim · model-written summary
The NO antagonist L-NAME prevented the development of wheat seedling heat resistance after hardening heating.
- Taxon
- Triticum aestivum L.Triticum aestivume1
- Material
- cv. Elegiyae1
- Treatment
- L-NAMEe0
- Outcome
- development of seedling heat resistancee0
- Direction
- preventede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whereas NO antagonists (PTIO and L-NAME) and antioxidants (ionol and DMTU) prevented the development of seedling heat resistance after hardening heating”
e1“winter soft wheat ( Triticum aestivum L., cv. Elegiya)”
Claim · model-written summary
The antioxidant ionol reduced the hardening-induced NO accumulation in wheat seedling tissues.
- Taxon
- Triticum aestivum L.Triticum aestivume1
- Material
- cv. Elegiyae1
- Organ / stage
- tissuese0
- Treatment
- ionole0
- Outcome
- hardening-induced nitric oxide accumulatione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedling treatment with the antioxidants ionol and dimethylthiourea (DMTU) reduced the hardening-induced nitric oxide accumulation in tissues”
e1“winter soft wheat ( Triticum aestivum L., cv. Elegiya)”
Claim · model-written summary
The antioxidant DMTU reduced the hardening-induced NO accumulation in wheat seedling tissues.
- Taxon
- Triticum aestivum L.Triticum aestivume1
- Material
- cv. Elegiyae1
- Organ / stage
- tissuese0
- Treatment
- dimethylthiourea (DMTU)e0
- Outcome
- hardening-induced nitric oxide accumulatione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedling treatment with the antioxidants ionol and dimethylthiourea (DMTU) reduced the hardening-induced nitric oxide accumulation in tissues”
e1“winter soft wheat ( Triticum aestivum L., cv. Elegiya)”
Claim · model-written summary
The antioxidant ionol prevented the development of wheat seedling heat resistance after hardening heating.
- Taxon
- Triticum aestivum L.Triticum aestivume1
- Material
- cv. Elegiyae1
- Treatment
- ionole0
- Outcome
- development of seedling heat resistancee0
- Direction
- preventede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whereas NO antagonists (PTIO and L-NAME) and antioxidants (ionol and DMTU) prevented the development of seedling heat resistance after hardening heating”
e1“winter soft wheat ( Triticum aestivum L., cv. Elegiya)”
Claim · model-written summary
The antioxidant DMTU prevented the development of wheat seedling heat resistance after hardening heating.
- Taxon
- Triticum aestivum L.Triticum aestivume1
- Material
- cv. Elegiyae1
- Treatment
- DMTUe0
- Outcome
- development of seedling heat resistancee0
- Direction
- preventede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whereas NO antagonists (PTIO and L-NAME) and antioxidants (ionol and DMTU) prevented the development of seedling heat resistance after hardening heating”
e1“winter soft wheat ( Triticum aestivum L., cv. Elegiya)”
Claim · model-written summary
The nitric oxide scavenger PTIO neutralized the effect (the H2O2 increase after heating) that the abstract reports.
- Taxon
- Triticum aestivum L.Triticum aestivume1
- Material
- cv. Elegiyae1
- Treatment
- nitric oxide scavenger PTIOe0
- Outcome
- This effecte0
- Direction
- neutralizede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This effect was neutralized when seedlings were treated with the nitric oxide scavenger PTIO”
e1“winter soft wheat ( Triticum aestivum L., cv. Elegiya)”
Claim · model-written summary
The NO synthase inhibitor L-NAME neutralized the effect (the H2O2 increase after heating) that the abstract reports.
- Taxon
- Triticum aestivum L.Triticum aestivume1
- Material
- cv. Elegiyae1
- Treatment
- inhibitor of NO synthase L-NAMEe0
- Outcome
- This effecte0
- Direction
- neutralizede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This effect was neutralized when seedlings were treated with the nitric oxide scavenger PTIO (2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide) and the inhibitor of NO synthase L-NAME”
e1“winter soft wheat ( Triticum aestivum L., cv. Elegiya)”
Claim · model-written summary
Functional interaction between NO and H2O2 as signaling messengers occurs during the induction of wheat seedling heat resistance by hardening heating.
- Taxon
- Triticum aestivum L.Triticum aestivume1
- Treatment
- hardening heatinge0
- Outcome
- induction of wheat seedling heat resistancee0
- Qualifier
- functional interaction between NO and H 2 O 2 as signaling messengerse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“during the induction of wheat seedling heat resistance by the hardening heating, functional interaction between NO and H 2 O 2 as signaling messengers occurs”
e1“winter soft wheat ( Triticum aestivum L., cv. Elegiya)”
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