Abstract
Waterlogging is a major abiotic stress that severely impedes sesame growth and productivity. Melatonin has emerged as a multifaceted regulator in plant stress responses, but its protective mechanisms against waterlogging in sesame, particularly at the proteomic level, remain largely unexplored. A pot experiment was conducted using two sesame genotypes with contrasting waterlogging tolerance (sensitive JHM and tolerant PYH) under well-drained, waterlogging, and waterlogging with melatonin pretreatment conditions. Results showed that waterlogging significantly inhibited plant growth, impaired root architecture, and induced oxidative stress, with more severe impacts on sensitive genotype JHM. Exogenous melatonin application markedly mitigated these adverse effects, reducing the decline in plant height and root growth parameters. Melatonin balanced osmotic pressure by modulating proline and soluble protein content, alleviated oxidative damage by decreasing MDA and H₂O₂ accumulation, and enhanced the activities of SOD, POD, and CAT. It also ameliorated stress signaling by downregulating the accumulation of ABA and ACC, while elevating endogenous melatonin levels. The PYH possessed a superior constitutive antioxidant capacity and hormonal stability, while melatonin was particularly beneficial for JHM. Proteomic analysis identified 1846 differentially expressed proteins (DEPs) in roots of JHM between waterlogged and melatonin-treated plants. These DEPs were predominantly enriched in metabolic pathways, phenylpropanoid biosynthesis, glutathione metabolism, and ROS metabolic processes. MT priming upregulated the expression of superoxide dismutase peroxidase 7, and peroxidase 15-like while downregulated hydrogen peroxide induced protein 1, which were consistent with the results of physiological analysis in JMH. Protein-protein interaction analysis highlighted key proteins like RPL6 and RPL4 as potential hubs within the melatonin-mediated ROS metabolic network. This study provides a comprehensive physiological and molecular elucidation of the multifaceted mechanisms by which melatonin confers waterlogging tolerance, establishing a theoretical foundation for its application in waterlogged regions.
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Claims 16
Claim · model-written summary
Waterlogging significantly inhibited sesame growth and impaired root architecture.
- Taxon
- Sesame
Sesamum indicumt0 - Treatment
- waterlogginge0
- Outcome
- plant growth, impaired root architecturee0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“waterlogging significantly inhibited plant growth, impaired root architecture”
t0“Sesame”
Claim · model-written summary
Waterlogging induced oxidative stress in sesame.
- Taxon
- SesameSesamum indicumt0
- Treatment
- waterlogginge0
- Outcome
- oxidative stresse0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“waterlogging significantly inhibited plant growth, impaired root architecture, and induced oxidative stress”
t0“Sesame”
Claim · model-written summary
Waterlogging impacts were more severe in sensitive JHM than tolerant PYH.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with more severe impacts on sensitive genotype JHM”
t0“tolerant PYH”
t1“Sesame”
Claim · model-written summary
Melatonin reduced waterlogging-associated decline in plant height and root growth.
- Taxon
- SesameSesamum indicumt0
- Treatment
- Exogenous melatonin applicatione0
- Outcome
- plant height and root growth parameterse0
- Direction
- reducing the declinee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous melatonin application markedly mitigated these adverse effects, reducing the decline in plant height and root growth parameters”
t0“Sesame”
Claim · model-written summary
Melatonin modulated proline and soluble protein content to balance osmotic pressure.
- Taxon
- SesameSesamum indicumt0
- Treatment
- Melatonine0
- Outcome
- osmotic pressuree0
- Qualifier
- modulating proline and soluble protein contente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Melatonin balanced osmotic pressure by modulating proline and soluble protein content”
t0“Sesame”
Claim · model-written summary
Melatonin decreased MDA and H₂O₂ accumulation.
- Taxon
- SesameSesamum indicumt1
- Treatment
- Melatonint0
- Outcome
- MDA and H₂O₂ accumulatione0
- Direction
- decreasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“alleviated oxidative damage by decreasing MDA and H₂O₂ accumulation”
t0“Melatonin”
t1“Sesame”
Claim · model-written summary
Melatonin enhanced SOD, POD, and CAT activities.
- Taxon
- SesameSesamum indicumt1
- Treatment
- Melatonint0
- Outcome
- activities of SOD, POD, and CATe0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“enhanced the activities of SOD, POD, and CAT”
t0“Melatonin”
t1“Sesame”
Claim · model-written summary
Melatonin downregulated ABA and ACC accumulation.
- Taxon
- SesameSesamum indicumt1
- Treatment
- Melatonint0
- Outcome
- accumulation of ABA and ACCe0
- Direction
- downregulatinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“downregulating the accumulation of ABA and ACC”
t0“Melatonin”
t1“Sesame”
Claim · model-written summary
Melatonin elevated endogenous melatonin levels.
- Taxon
- SesameSesamum indicumt1
- Treatment
- Melatonint0
- Outcome
- endogenous melatonin levelse0
- Direction
- elevatinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“elevating endogenous melatonin levels”
t0“Melatonin”
t1“Sesame”
Claim · model-written summary
PYH had superior constitutive antioxidant capacity and hormonal stability.
- Taxon
- SesameSesamum indicumt0
- Material
- PYHe0
- Outcome
- constitutive antioxidant capacity and hormonal stabilitye0
- Direction
- superiore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The PYH possessed a superior constitutive antioxidant capacity and hormonal stability”
t0“Sesame”
Claim · model-written summary
Melatonin was particularly beneficial for JHM.
- Taxon
- SesameSesamum indicumt0
- Material
- JHMe0
- Treatment
- melatonine0
- Outcome
- particularly beneficiale0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“melatonin was particularly beneficial for JHM”
t0“Sesame”
Claim · model-written summary
Proteomics identified 1846 differentially expressed root proteins in JHM between waterlogged and melatonin-treated plants.
- Taxon
- SesameSesamum indicumt0
- Material
- JHMe0
- Organ / stage
- rootse0
- Outcome
- differentially expressed proteins (DEPs)e0
- Value
- 1846e0
- Comparator
- waterlogged and melatonin-treated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Proteomic analysis identified 1846 differentially expressed proteins (DEPs) in roots of JHM between waterlogged and melatonin-treated plants”
t0“Sesame”
Claim · model-written summary
Differential proteins were enriched in metabolic, phenylpropanoid, glutathione, and ROS pathways.
- Taxon
- SesameSesamum indicumt0
- Outcome
- enriched in metabolic pathways, phenylpropanoid biosynthesis, glutathione metabolism, and ROS metabolic processese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These DEPs were predominantly enriched in metabolic pathways, phenylpropanoid biosynthesis, glutathione metabolism, and ROS metabolic processes”
t0“Sesame”
Claim · model-written summary
Melatonin priming upregulated superoxide dismutase peroxidase 7 and peroxidase 15-like.
- Taxon
- SesameSesamum indicumt0
- Treatment
- MT priminge0
- Outcome
- expression of superoxide dismutase peroxidase 7, and peroxidase 15-likee0
- Direction
- upregulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MT priming upregulated the expression of superoxide dismutase peroxidase 7, and peroxidase 15-like”
t0“Sesame”
Claim · model-written summary
Melatonin priming downregulated hydrogen peroxide induced protein 1.
- Taxon
- SesameSesamum indicumt1
- Treatment
- MT primingt0
- Outcome
- hydrogen peroxide induced protein 1e0
- Direction
- downregulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“downregulated hydrogen peroxide induced protein 1”
t0“MT priming upregulated the expression of superoxide dismutase peroxidase 7”
t1“Sesame”
Claim · model-written summary
RPL6 and RPL4 emerged as potential hubs in the melatonin-mediated ROS metabolic network.
- Taxon
- SesameSesamum indicumt0
- Gene
- RPL6 and RPL4e0
- Outcome
- potential hubs within the melatonin-mediated ROS metabolic networke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Protein-protein interaction analysis highlighted key proteins like RPL6 and RPL4 as potential hubs within the melatonin-mediated ROS metabolic network”
t0“Sesame”
The same questions in other papers
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melatonin · growth · Sesamum indicum (sesame)Results agree
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flooding · physiology: oxidative · Sesamum indicum (sesame)Positive and negative results
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flooding · growth · Sesamum indicum (sesame)Results agree
7 papers in the same direction as this paper
- negative
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4 papers more in this group
See all 8 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.