Abstract
Melatonin, an antioxidant in both animals and plants, has been reported to have beneficial effects on the aging process. It was also suggested to play a role in extending longevity and enhancing abiotic stress resistance in plant. In this study, we demonstrate that melatonin acts as a potent agent to delay leaf senescence and cell death in rice. Treatments with melatonin significantly reduced chlorophyll degradation, suppressed the transcripts of senescence-associated genes, delayed the leaf senescence, and enhanced salt stress tolerance. Genome-wide expression profiling by RNA sequencing reveals that melatonin is a potent free radical scavenger, and its exogenous application results in enhanced antioxidant protection. Leaf cell death in noe1, a mutant with over-produced H2O2, can be relieved by exogenous application of melatonin. These data demonstrate that melatonin delays the leaf senescence and cell death and also enhances abiotic stress tolerance via directly or indirectly counteracting the cellular accumulation of H2O2.
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Claims 7
Claim · model-written summary
Melatonin treatment significantly reduced chlorophyll degradation in rice.
- Taxon
- rice
Oryza sativat0 - Treatment
- melatonine0
- Outcome
- chlorophyll degradatione1
- Direction
- reducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Treatments with melatonin”
e1“significantly reduced chlorophyll degradation”
Claim · model-written summary
Melatonin treatment suppressed the transcripts of senescence-associated genes in rice.
- Taxon
- riceOryza sativat0
- Treatment
- melatonine0
- Gene
- senescence-associated genese1
- Outcome
- transcripts of senescence-associated genese1
- Direction
- suppressede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Treatments with melatonin”
e1“suppressed the transcripts of senescence-associated genes”
Claim · model-written summary
Melatonin treatment delayed leaf senescence in rice.
- Taxon
- riceOryza sativat0
- Treatment
- melatonine0
- Outcome
- leaf senescencee1
- Direction
- delayede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Treatments with melatonin”
e1“delayed the leaf senescence”
Claim · model-written summary
Melatonin treatment enhanced salt stress tolerance in rice.
- Taxon
- riceOryza sativat0
- Treatment
- melatonine0
- Outcome
- salt stress tolerancee1
- Direction
- enhancede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Treatments with melatonin”
e1“enhanced salt stress tolerance”
Claim · model-written summary
RNA sequencing indicated that melatonin is a potent free radical scavenger and that its exogenous application results in enhanced antioxidant protection in rice.
- Taxon
- riceOryza sativat0
- Compound
- melatonine1
- Outcome
- antioxidant protectione1
- Qualifier
- free radical scavengere1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e1“Genome-wide expression profiling by RNA sequencing reveals that melatonin is a potent free radical scavenger, and its exogenous application results in enhanced antioxidant protection”
Claim · model-written summary
Leaf cell death in the rice mutant noe1, which over-produces H2O2, was relieved by exogenous application of melatonin.
- Taxon
- riceOryza sativat0
- Material
- noe1e1
- Treatment
- exogenous application of melatonine1
- Outcome
- Leaf cell deathe1
- Direction
- relievede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e1“Leaf cell death in noe1, a mutant with over-produced H2O2, can be relieved by exogenous application of melatonin”
Claim · model-written summary
The authors conclude that melatonin delays leaf senescence and cell death and enhances abiotic stress tolerance by directly or indirectly counteracting cellular H2O2 accumulation.
- Taxon
- riceOryza sativat0
- Treatment
- melatonine1
- Compound
- H2O2e1
- Outcome
- leaf senescence and cell deathe1
- Qualifier
- directly or indirectly counteracting the cellular accumulation of H2O2e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e1“melatonin delays the leaf senescence and cell death and also enhances abiotic stress tolerance via directly or indirectly counteracting the cellular accumulation of H2O2”
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See all 20 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.