Abstract
Melatonin is a bioactive molecule with an important role in plants responding to various abiotic and biotic stresses. This study aims to determine the role of melatonin in rice under salt stress. This study used a factorial completely randomized design. The first factor was local rice varieties (IR64 and Silaun), and the second factor was plant treatments (control, 1 µM melatonin, 150 mM NaCl, 150 mM NaCl + 1µM melatonin). This study shows that exogenous melatonin can increase plant growth, such as plant height, root length, stem length, leaf length, leaf area, and plant biomass under salt stress compared to treatment without melatonin. Exogenous melatonin can increase the total chlorophyll content, relative water content, and proline content, reduce the total sodium content, and increase potassium absorption under conditions of salinity stress. Melatonin is also able to scavenge ROS in plants, resulted the decrease in ROS and MDA content. In terms of gene expression, OsAPX1 and cytosolic APX exhibited the highest expression in IR64 under combined salt and melatonin treatment, while GPOD, Mn-SOD, and Cu/Zn-SOD were upregulated under various conditions in both varieties. Additionally, OsLEA showed high expression in both varieties under control conditions, and CAT was significantly upregulated under salt stress. Our findings indicate that exogenous melatonin has the potential to enhance various factors under salt stress and helping in the recovery of rice plants from sodium (Na+) damage.
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Claims 12
Claim · model-written summary
Exogenous melatonin increased plant height, root length and stem length under salt stress compared with no melatonin.
- Taxon
- rice genotypes
Oryza sativat0 - Treatment
- exogenous melatonine0
- Outcome
- plant height, root length, stem lengthe0
- Direction
- increasee0
- Qualifier
- under salt stresse0
- Comparator
- treatment without melatonine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice genotypes”
e0“This study shows that exogenous melatonin can increase plant growth, such as plant height, root length, stem length, leaf length, leaf area, and plant biomass under salt stress compared to treatment without melatonin”
Claim · model-written summary
Exogenous melatonin increased leaf length, leaf area and plant biomass under salt stress compared with no melatonin.
- Taxon
- rice genotypesOryza sativat0
- Treatment
- exogenous melatonine0
- Outcome
- leaf length, leaf area, and plant biomasse0
- Direction
- increasee0
- Qualifier
- under salt stresse0
- Comparator
- treatment without melatonine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice genotypes”
e0“This study shows that exogenous melatonin can increase plant growth, such as plant height, root length, stem length, leaf length, leaf area, and plant biomass under salt stress compared to treatment without melatonin”
Claim · model-written summary
Exogenous melatonin increased total chlorophyll content, relative water content and proline content under salinity stress.
- Taxon
- rice genotypesOryza sativat0
- Treatment
- exogenous melatonine1
- Outcome
- total chlorophyll content, relative water content, and proline contente1
- Direction
- increasee1
- Qualifier
- under conditions of salinity stresse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice genotypes”
e1“Exogenous melatonin can increase the total chlorophyll content, relative water content, and proline content, reduce the total sodium content, and increase potassium absorption under conditions of salinity stress”
Claim · model-written summary
Exogenous melatonin reduced total sodium content under salinity stress.
- Taxon
- rice genotypesOryza sativat0
- Treatment
- exogenous melatonine1
- Outcome
- total sodium contente1
- Direction
- reducee1
- Qualifier
- under conditions of salinity stresse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice genotypes”
e1“Exogenous melatonin can increase the total chlorophyll content, relative water content, and proline content, reduce the total sodium content, and increase potassium absorption under conditions of salinity stress”
Claim · model-written summary
Exogenous melatonin increased potassium absorption under salinity stress.
- Taxon
- rice genotypesOryza sativat0
- Treatment
- exogenous melatonine1
- Outcome
- potassium absorptione1
- Direction
- increasee1
- Qualifier
- under conditions of salinity stresse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice genotypes”
e1“Exogenous melatonin can increase the total chlorophyll content, relative water content, and proline content, reduce the total sodium content, and increase potassium absorption under conditions of salinity stress”
Claim · model-written summary
Melatonin decreased ROS and MDA content in rice.
- Taxon
- rice genotypesOryza sativat0
- Treatment
- Melatonine2
- Outcome
- ROS and MDA contente2
- Direction
- decreasee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice genotypes”
e2“Melatonin is also able to scavenge ROS in plants, resulted the decrease in ROS and MDA content”
Claim · model-written summary
Melatonin is interpreted to scavenge ROS in rice plants.
- Taxon
- rice genotypesOryza sativat0
- Treatment
- Melatonine2
- Outcome
- ROSe2
- Qualifier
- able to scavenge ROSe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice genotypes”
e2“Melatonin is also able to scavenge ROS in plants, resulted the decrease in ROS and MDA content”
Claim · model-written summary
OsAPX1 and cytosolic APX had the highest gene expression in IR64 under combined salt and melatonin treatment.
- Taxon
- rice genotypesOryza sativat0
- Material
- IR64e3
- Treatment
- combined salt and melatonin treatmente3
- Gene
- OsAPX1 and cytosolic APXe3
- Outcome
- gene expressione3
- Direction
- higheste3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice genotypes”
e3“In terms of gene expression, OsAPX1 and cytosolic APX exhibited the highest expression in IR64 under combined salt and melatonin treatment”
Claim · model-written summary
GPOD, Mn-SOD and Cu/Zn-SOD were upregulated under various conditions in both rice varieties.
- Taxon
- rice genotypesOryza sativat0
- Material
- both varietiese4
- Treatment
- various conditionse4
- Gene
- GPOD, Mn-SOD, and Cu/Zn-SODe4
- Outcome
- gene expressione3
- Direction
- upregulatede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice genotypes”
e3“In terms of gene expression, OsAPX1 and cytosolic APX exhibited the highest expression in IR64 under combined salt and melatonin treatment”
e4“GPOD, Mn-SOD, and Cu/Zn-SOD were upregulated under various conditions in both varieties”
Claim · model-written summary
OsLEA showed high expression in both rice varieties under control conditions.
- Taxon
- rice genotypesOryza sativat0
- Material
- both varietiese5
- Gene
- OsLEAe5
- Outcome
- expressione5
- Direction
- highe5
- Qualifier
- under control conditionse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice genotypes”
e5“OsLEA showed high expression in both varieties under control conditions”
Claim · model-written summary
CAT was significantly upregulated under salt stress in rice.
- Taxon
- rice genotypesOryza sativat0
- Treatment
- salt stresse6
- Gene
- CATe6
- Outcome
- gene expressione3
- Direction
- upregulatede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice genotypes”
e3“In terms of gene expression, OsAPX1 and cytosolic APX exhibited the highest expression in IR64 under combined salt and melatonin treatment”
e6“CAT was significantly upregulated under salt stress”
Claim · model-written summary
Exogenous melatonin is interpreted to help rice recover from sodium damage.
- Taxon
- rice genotypesOryza sativat0
- Treatment
- exogenous melatonine7
- Outcome
- recovery of rice plants from sodium (Na+) damagee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice genotypes”
e7“Our findings indicate that exogenous melatonin has the potential to enhance various factors under salt stress and helping in the recovery of rice plants from sodium (Na+) damage”
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