Abstract
The effects of 1-min-long exposure to 42°C (hardening heating) on heat tolerance and dynamics of ROS (superoxide anion radical and hydrogen peroxide) generation were investigated in the wheat ( Triticum aestivum L., cv. Elegiya) seedlings. During the initial 5–30 min after the onset of hyperthermia, ROS generation by roots and shoots was intensified, and superoxide dismutase (SOD) was activated. During the first hour after hardening heating, the seedling tolerance to injurious 10-min-long treatment with high temperature (46°C) decreased but subsequently it gradually rose, reaching maximum in 24 h. Transient accumulation of hydrogen peroxide induced by hardening was suppressed by seedling treatment with H 2 O 2 scavenger dimethylthiourea, by inhibitors of NADPH-oxidase (imidazole) and DDC (sodium diethyldithiocarbamate). These compounds considerably reduced favorable effect of hardening on seedling heat tolerance. It was concluded that generation of a signal inducing the development of heat tolerance depended on NADPH-oxidase producing superoxide anion radical and SOD that transforms it into hydrogen peroxide (more stable ROS performing signaling functions).
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Claims 9
Claim · model-written summary
Hardening heating at 42°C intensified ROS generation by wheat roots and shoots during the first 5–30 min after onset of hyperthermia.
- Taxon
- Triticum aestivum L.
Triticum aestivume0 - Material
- cv. Elegiyae0
- Organ / stage
- roots and shootse1
- Treatment
- onset of hyperthermiae1
- Outcome
- ROS generatione1
- Direction
- intensifiede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat ( Triticum aestivum L., cv. Elegiya) seedlings”
e1“During the initial 5–30 min after the onset of hyperthermia, ROS generation by roots and shoots was intensified, and superoxide dismutase (SOD) was activated”
Claim · model-written summary
Hyperthermia onset activated superoxide dismutase (SOD) in wheat seedlings.
- Taxon
- Triticum aestivum L.Triticum aestivume0
- Material
- cv. Elegiyae0
- Treatment
- onset of hyperthermiae1
- Outcome
- superoxide dismutase (SOD)e1
- Direction
- activatede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat ( Triticum aestivum L., cv. Elegiya) seedlings”
e1“During the initial 5–30 min after the onset of hyperthermia, ROS generation by roots and shoots was intensified, and superoxide dismutase (SOD) was activated”
Claim · model-written summary
Seedling heat tolerance decreased during the first hour after hardening heating.
- Taxon
- Triticum aestivum L.Triticum aestivume0
- Material
- cv. Elegiyae0
- Treatment
- hardening heatinge2
- Outcome
- seedling tolerancee2
- Direction
- decreasede2
- Qualifier
- During the first hour after hardening heatinge2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat ( Triticum aestivum L., cv. Elegiya) seedlings”
e2“During the first hour after hardening heating, the seedling tolerance to injurious 10-min-long treatment with high temperature (46°C) decreased but subsequently it gradually rose, reaching maximum in 24 h”
Claim · model-written summary
Seedling heat tolerance rose after hardening heating, reaching its maximum at 24 h.
- Taxon
- Triticum aestivum L.Triticum aestivume0
- Material
- cv. Elegiyae0
- Treatment
- hardening heatinge2
- Outcome
- seedling tolerancee2
- Direction
- rosee2
- Qualifier
- reaching maximum in 24 he2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat ( Triticum aestivum L., cv. Elegiya) seedlings”
e2“During the first hour after hardening heating, the seedling tolerance to injurious 10-min-long treatment with high temperature (46°C) decreased but subsequently it gradually rose, reaching maximum in 24 h”
Claim · model-written summary
The H2O2 scavenger dimethylthiourea suppressed transient hydrogen peroxide accumulation induced by hardening in wheat seedlings.
- Taxon
- Triticum aestivum L.Triticum aestivume0
- Material
- cv. Elegiyae0
- Treatment
- seedling treatment with H 2 O 2 scavenger dimethylthioureae3
- Compound
- hydrogen peroxidee3
- Outcome
- Transient accumulation of hydrogen peroxidee3
- Direction
- suppressede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat ( Triticum aestivum L., cv. Elegiya) seedlings”
e3“Transient accumulation of hydrogen peroxide induced by hardening was suppressed by seedling treatment with H 2 O 2 scavenger dimethylthiourea, by inhibitors of NADPH-oxidase (imidazole) and DDC (sodium diethyldithiocarbamate)”
Claim · model-written summary
The NADPH-oxidase inhibitor imidazole suppressed transient hydrogen peroxide accumulation induced by hardening in wheat seedlings.
- Taxon
- Triticum aestivum L.Triticum aestivume0
- Material
- cv. Elegiyae0
- Treatment
- inhibitors of NADPH-oxidase (imidazole)e3
- Gene
- NADPH-oxidasee3
- Outcome
- Transient accumulation of hydrogen peroxidee3
- Direction
- suppressede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat ( Triticum aestivum L., cv. Elegiya) seedlings”
e3“Transient accumulation of hydrogen peroxide induced by hardening was suppressed by seedling treatment with H 2 O 2 scavenger dimethylthiourea, by inhibitors of NADPH-oxidase (imidazole) and DDC (sodium diethyldithiocarbamate)”
Claim · model-written summary
The DDC inhibitor sodium diethyldithiocarbamate suppressed transient hydrogen peroxide accumulation induced by hardening in wheat seedlings.
- Taxon
- Triticum aestivum L.Triticum aestivume0
- Material
- cv. Elegiyae0
- Treatment
- DDC (sodium diethyldithiocarbamate)e3
- Compound
- sodium diethyldithiocarbamatee3
- Outcome
- Transient accumulation of hydrogen peroxidee3
- Direction
- suppressede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat ( Triticum aestivum L., cv. Elegiya) seedlings”
e3“Transient accumulation of hydrogen peroxide induced by hardening was suppressed by seedling treatment with H 2 O 2 scavenger dimethylthiourea, by inhibitors of NADPH-oxidase (imidazole) and DDC (sodium diethyldithiocarbamate)”
Claim · model-written summary
The scavenger and inhibitors considerably reduced the favorable effect of hardening on seedling heat tolerance.
- Taxon
- Triticum aestivum L.Triticum aestivume0
- Material
- cv. Elegiyae0
- Treatment
- These compoundse4
- Outcome
- favorable effect of hardening on seedling heat tolerancee4
- Direction
- reducede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat ( Triticum aestivum L., cv. Elegiya) seedlings”
e4“These compounds considerably reduced favorable effect of hardening on seedling heat tolerance”
Claim · model-written summary
The heat-tolerance signal depends on NADPH-oxidase producing superoxide anion radical, which SOD transforms into hydrogen peroxide.
- Taxon
- Triticum aestivum L.Triticum aestivume0
- Material
- cv. Elegiyae0
- Gene
- NADPH-oxidasee5
- Compound
- superoxide anion radicale5
- Outcome
- generation of a signal inducing the development of heat tolerancee5
- Qualifier
- SOD that transforms it into hydrogen peroxidee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat ( Triticum aestivum L., cv. Elegiya) seedlings”
e5“generation of a signal inducing the development of heat tolerance depended on NADPH-oxidase producing superoxide anion radical and SOD that transforms it into hydrogen peroxide (more stable ROS performing signaling functions)”
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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.