Abstract
Effects of NaHS, H2S donor, on germination and antioxidant metabolism in wheat (Triticum aestivum L.) seeds under osmotic stress were investigated. With the enhancement of osmotic stress, which was mimicked by PEG-6000, the seed germination dropped gradually. NaHS treatment could promote wheat seed germination against osmotic stress in a dose-dependent manner; while Na+ and other sulfur-containing components, such as S2−, SO 4 2− , SO 3 2− , HSO 4 − and HSO 3 − , were not able to improve seed germination as NaHS did, confirming H2S or HS− derived from NaHS contribute to the protective roles. Further experiments showed that NaHS treatment combined with PEG enhanced the activities of amylase and esterase in comparison to PEG treatment alone. Alternatively, NaHS treatment significantly reduced malondialdehyde and hydrogen peroxide accumulation in seeds. Significant enhancement of catalase and ascorbate peroxidase activities and decrease in lipoxygenase activity were observed in NaHS treated seeds, while peroxidase and superoxide dismutase activities were not affected as compared with the control. Furthermore, the H2S donor treatment could retain higher levels of endogenous H2S in wheat seeds under osmotic stress. These data indicated that H2S played a protective role in wheat seed against osmotic stress.
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Claims 9
Claim · model-written summary
Increasing osmotic stress (PEG-6000) gradually reduced wheat seed germination.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- osmotic stresse1
- Outcome
- seed germinatione1
- Direction
- droppede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat (Triticum aestivum L.) seeds”
e1“With the enhancement of osmotic stress, which was mimicked by PEG-6000, the seed germination dropped gradually”
Claim · model-written summary
NaHS treatment promoted wheat seed germination under osmotic stress in a dose-dependent manner.
- Taxon
- wheatTriticum aestivume0
- Treatment
- NaHSe2
- Outcome
- seed germinatione2
- Direction
- promotee2
- Qualifier
- against osmotic stress in a dose-dependent mannere2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat (Triticum aestivum L.) seeds”
e2“NaHS treatment could promote wheat seed germination against osmotic stress in a dose-dependent manner”
Claim · model-written summary
Na+ and other sulfur-containing components did not improve wheat seed germination as NaHS did.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Na+ and other sulfur-containing componentse3
- Outcome
- seed germinatione3
- Direction
- not able to improvee3
- Comparator
- NaHSe3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat (Triticum aestivum L.) seeds”
e3“Na+ and other sulfur-containing components, such as S2−, SO 4 2− , SO 3 2− , HSO 4 − and HSO 3 − , were not able to improve seed germination as NaHS did”
Claim · model-written summary
NaHS combined with PEG enhanced amylase and esterase activities in wheat seeds relative to PEG alone.
- Taxon
- wheatTriticum aestivume0
- Treatment
- NaHSe4
- Outcome
- activities of amylase and esterasee4
- Direction
- enhancede4
- Comparator
- PEG treatment alonee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat (Triticum aestivum L.) seeds”
e4“NaHS treatment combined with PEG enhanced the activities of amylase and esterase in comparison to PEG treatment alone”
Claim · model-written summary
NaHS significantly reduced malondialdehyde and hydrogen peroxide accumulation in wheat seeds under osmotic stress.
- Taxon
- wheatTriticum aestivume0
- Treatment
- NaHSe5
- Outcome
- malondialdehyde and hydrogen peroxide accumulatione5
- Direction
- reducede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat (Triticum aestivum L.) seeds”
e5“NaHS treatment significantly reduced malondialdehyde and hydrogen peroxide accumulation in seeds”
Claim · model-written summary
NaHS significantly enhanced catalase and ascorbate peroxidase activities in wheat seeds.
- Taxon
- wheatTriticum aestivume0
- Treatment
- NaHSe6
- Outcome
- catalase and ascorbate peroxidase activitiese6
- Direction
- enhancemente6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat (Triticum aestivum L.) seeds”
e6“Significant enhancement of catalase and ascorbate peroxidase activities and decrease in lipoxygenase activity were observed in NaHS treated seeds”
Claim · model-written summary
NaHS decreased lipoxygenase activity in wheat seeds.
- Taxon
- wheatTriticum aestivume0
- Treatment
- NaHSe6
- Outcome
- lipoxygenase activitye6
- Direction
- decreasee6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat (Triticum aestivum L.) seeds”
e6“Significant enhancement of catalase and ascorbate peroxidase activities and decrease in lipoxygenase activity were observed in NaHS treated seeds”
Claim · model-written summary
NaHS did not affect peroxidase and superoxide dismutase activities in wheat seeds compared with the control.
- Taxon
- wheatTriticum aestivume0
- Treatment
- NaHSe6
- Outcome
- peroxidase and superoxide dismutase activitiese7
- Direction
- not affectede7
- Comparator
- controle7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat (Triticum aestivum L.) seeds”
e6“Significant enhancement of catalase and ascorbate peroxidase activities and decrease in lipoxygenase activity were observed in NaHS treated seeds”
e7“peroxidase and superoxide dismutase activities were not affected as compared with the control”
Claim · model-written summary
The H2S donor treatment retained higher levels of endogenous H2S in wheat seeds under osmotic stress.
- Taxon
- wheatTriticum aestivume5
- Treatment
- H2S donor treatmente5
- Outcome
- levels of endogenous H2Se5
- Direction
- highere5
- Qualifier
- under osmotic stresse5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“the H2S donor treatment could retain higher levels of endogenous H2S in wheat seeds under osmotic stress”
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