Abstract
Abstract Currently, melatonin (N-acetyl-5-methoxytryptamine) is considered as a multifunctional bioregulator not only in mammals but also in plants. The aim of this work was to study the effect of melatonin on the resistance of seedlings of wheat (Triticum aestivum L., Dosconala variety) and rye (Secale cereale L., Pamyat’ Khudoyerka variety) to high temperature and the functioning of key cellular protection systems (antioxidant and osmoprotective). Rye seedlings were different from wheat seedlings by higher heat resistance, which was manifested in less inhibition of the growth after a 6-h heating at 44°C and less manifestation of the oxidative stress effects. The treatment of wheat seeds with melatonin in concentrations of 20–100 μM significantly decreased the inhibition of the shoot and root growth caused by the effect of a high temperature. The rye seedlings were less affected by melatonin, reducing only the inhibition of the shoot growth. The treatment with melatonin prevented the development of the oxidative stress caused by the effect of high temperature, which was manifested in a decrease in the indices of superoxide radical generation, the content of hydrogen peroxide and malondialdehyde in the shoots of wheat and rye seedlings. The treatment of caryopses of both cereal species with melatonin caused an increase in the catalase activity against the background of the heat stress as well as contributed to the stabilization of peroxidase activity under stress conditions in wheat and caused its increase in rye. In addition, the treatment of caryopses with melatonin caused an increase in the content of soluble carbohydrates under stress conditions but did not affect significantly the content of proline in the shoots of seedlings of both species. In general, a less noticeable effect of melatonin treatment on the functioning of the protective systems in rye was noted. A decrease in the oxidative damage to the cells, an increase in the activity of antioxidant enzymes, and an increase in the accumulation of soluble carbohydrates are the key effects of melatonin under stress conditions.
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Claims 13
Claim · model-written summary
Rye seedlings had higher heat resistance than wheat seedlings.
- Taxon
- Secale cereale
Secale cerealet0 - Outcome
- heat resistancee1
- Direction
- highere1
- Comparator
- wheat seedlingse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Triticum aestivum and Secale cereale”
e1“Rye seedlings were different from wheat seedlings by higher heat resistance”
Claim · model-written summary
Melatonin at 20–100 μM significantly decreased the high-temperature inhibition of shoot and root growth in wheat.
- Taxon
- Triticum aestivum
Triticum aestivumt0 - Treatment
- melatonin in concentrations of 20–100 μMe2
- Outcome
- inhibition of the shoot and root growthe2
- Direction
- decreasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Triticum aestivum and Secale cereale”
e2“The treatment of wheat seeds with melatonin in concentrations of 20–100 μM significantly decreased the inhibition of the shoot and root growth caused by the effect of a high temperature”
Claim · model-written summary
Melatonin reduced only the high-temperature inhibition of shoot growth in rye.
- Taxon
- Secale cerealeSecale cerealet0
- Treatment
- melatonine3
- Outcome
- inhibition of the shoot growthe3
- Direction
- reducinge3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Triticum aestivum and Secale cereale”
e3“The rye seedlings were less affected by melatonin, reducing only the inhibition of the shoot growth”
Claim · model-written summary
Melatonin decreased superoxide radical generation, hydrogen peroxide and malondialdehyde content in wheat shoots under heat stress.
- Taxon
- Triticum aestivumTriticum aestivumt0
- Organ / stage
- shootse4
- Treatment
- melatonine5
- Outcome
- indices of superoxide radical generation, the content of hydrogen peroxide and malondialdehydee4
- Direction
- decreasee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Triticum aestivum and Secale cereale”
e4“a decrease in the indices of superoxide radical generation, the content of hydrogen peroxide and malondialdehyde in the shoots of wheat and rye seedlings”
e5“The treatment of caryopses of both cereal species with melatonin caused an increase in the catalase activity against the background of the heat stress”
Claim · model-written summary
Melatonin decreased superoxide radical generation, hydrogen peroxide and malondialdehyde content in rye shoots under heat stress.
- Taxon
- Secale cerealeSecale cerealet0
- Organ / stage
- shootse4
- Treatment
- melatonine5
- Outcome
- indices of superoxide radical generation, the content of hydrogen peroxide and malondialdehydee4
- Direction
- decreasee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Triticum aestivum and Secale cereale”
e4“a decrease in the indices of superoxide radical generation, the content of hydrogen peroxide and malondialdehyde in the shoots of wheat and rye seedlings”
e5“The treatment of caryopses of both cereal species with melatonin caused an increase in the catalase activity against the background of the heat stress”
Claim · model-written summary
Melatonin treatment of caryopses increased catalase activity under heat stress in wheat.
- Taxon
- Triticum aestivumTriticum aestivumt0
- Organ / stage
- caryopsese5
- Treatment
- melatonine5
- Outcome
- catalase activitye5
- Direction
- increasee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Triticum aestivum and Secale cereale”
e5“The treatment of caryopses of both cereal species with melatonin caused an increase in the catalase activity against the background of the heat stress”
Claim · model-written summary
Melatonin treatment of caryopses increased catalase activity under heat stress in rye.
- Taxon
- Secale cerealeSecale cerealet0
- Organ / stage
- caryopsese5
- Treatment
- melatonine5
- Outcome
- catalase activitye5
- Direction
- increasee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Triticum aestivum and Secale cereale”
e5“The treatment of caryopses of both cereal species with melatonin caused an increase in the catalase activity against the background of the heat stress”
Claim · model-written summary
Melatonin stabilized peroxidase activity under stress in wheat.
- Taxon
- Triticum aestivumTriticum aestivumt0
- Treatment
- melatonine5
- Outcome
- peroxidase activitye6
- Direction
- stabilizatione6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Triticum aestivum and Secale cereale”
e5“The treatment of caryopses of both cereal species with melatonin caused an increase in the catalase activity against the background of the heat stress”
e6“contributed to the stabilization of peroxidase activity under stress conditions in wheat and caused its increase in rye”
Claim · model-written summary
Melatonin increased peroxidase activity under stress in rye.
- Taxon
- Secale cerealeSecale cerealet0
- Treatment
- melatonine5
- Outcome
- peroxidase activitye6
- Direction
- increasee6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Triticum aestivum and Secale cereale”
e5“The treatment of caryopses of both cereal species with melatonin caused an increase in the catalase activity against the background of the heat stress”
e6“contributed to the stabilization of peroxidase activity under stress conditions in wheat and caused its increase in rye”
Claim · model-written summary
Melatonin treatment of caryopses increased soluble carbohydrate content under stress in wheat.
- Taxon
- Triticum aestivumTriticum aestivumt0
- Treatment
- treatment of caryopses with melatonine7
- Outcome
- content of soluble carbohydratese7
- Direction
- increasee7
- Qualifier
- under stress conditionse7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Triticum aestivum and Secale cereale”
e7“the treatment of caryopses with melatonin caused an increase in the content of soluble carbohydrates under stress conditions”
Claim · model-written summary
Melatonin treatment of caryopses increased soluble carbohydrate content under stress in rye.
- Taxon
- Secale cerealeSecale cerealet0
- Treatment
- treatment of caryopses with melatonine7
- Outcome
- content of soluble carbohydratese7
- Direction
- increasee7
- Qualifier
- under stress conditionse7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Triticum aestivum and Secale cereale”
e7“the treatment of caryopses with melatonin caused an increase in the content of soluble carbohydrates under stress conditions”
Claim · model-written summary
Melatonin did not significantly affect proline content in wheat shoots.
- Taxon
- Triticum aestivumTriticum aestivumt0
- Organ / stage
- shootse6
- Treatment
- melatonine5
- Outcome
- content of prolinee6
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Triticum aestivum and Secale cereale”
e5“The treatment of caryopses of both cereal species with melatonin caused an increase in the catalase activity against the background of the heat stress”
e6“did not affect significantly the content of proline in the shoots of seedlings of both species”
Claim · model-written summary
Melatonin did not significantly affect proline content in rye shoots.
- Taxon
- Secale cerealeSecale cerealet0
- Organ / stage
- shootse6
- Treatment
- melatonine5
- Outcome
- content of prolinee6
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Triticum aestivum and Secale cereale”
e5“The treatment of caryopses of both cereal species with melatonin caused an increase in the catalase activity against the background of the heat stress”
e6“did not affect significantly the content of proline in the shoots of seedlings of both species”
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