Abstract
Melatonin (MT) functions in removing reactive oxygen species (ROS) and delaying plant senescence, thereby acting as an antioxidant; however, the molecular mechanism underlying the specific action of MT is unclear. Herein, we used the mutant plants carrying the MT decomposition gene melatonin 3-hydroxylase (M3H) in tomato to elucidate the specific mechanism of action of MT. SlM3H-OE accelerated senescence by decreasing the content of endogenous MT in plants. SlM3H is a senescence-related gene that positively regulates aging. MT inhibited the expression of the senescence-related gene SlCV to scavenge ROS, induced stable chloroplast structure, and delayed leaf senescence. Simultaneously, MT weakened the interaction between SlCV and SlPsbO/SlCAT3, reduced ROS production in photosystem II, and promoted ROS elimination. In conclusion, MT regulates ROS homeostasis and delays leaf aging in tomato plants through SlCV expression modulation.
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Claims 9
Claim · model-written summary
SlM3H-OE accelerated senescence while lowering endogenous melatonin.
- Taxon
- tomato
Solanum lycopersicumt0 - Material
- SlM3H-OEe0
- Compound
- endogenous MTe0
- Outcome
- senescencee0
- Direction
- acceleratede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SlM3H-OE accelerated senescence by decreasing the content of endogenous MT in plants”
t0“tomato plants”
Claim · model-written summary
SlM3H positively regulates aging.
- Taxon
- tomatoSolanum lycopersicumt0
- Gene
- SlM3He0
- Outcome
- aginge0
- Direction
- positively regulatese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SlM3H is a senescence-related gene that positively regulates aging”
t0“tomato plants”
Claim · model-written summary
Melatonin inhibited SlCV expression.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- MTe0
- Gene
- SlCVe0
- Outcome
- expression of the senescence-related gene SlCVe0
- Direction
- inhibitede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MT inhibited the expression of the senescence-related gene SlCV to scavenge ROS”
t0“tomato plants”
Claim · model-written summary
Melatonin promoted ROS scavenging.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- MTe0
- Gene
- SlCVe0
- Outcome
- scavenge ROSe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MT inhibited the expression of the senescence-related gene SlCV to scavenge ROS”
t0“tomato plants”
Claim · model-written summary
Melatonin stabilized chloroplast structure.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- MTe0
- Outcome
- stable chloroplast structuree0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MT inhibited the expression of the senescence-related gene SlCV to scavenge ROS, induced stable chloroplast structure, and delayed leaf senescence”
t0“tomato plants”
Claim · model-written summary
Melatonin delayed leaf senescence.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- MTe0
- Outcome
- leaf senescencee0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MT inhibited the expression of the senescence-related gene SlCV to scavenge ROS, induced stable chloroplast structure, and delayed leaf senescence”
t0“tomato plants”
Claim · model-written summary
Melatonin weakened the interaction between SlCV and SlPsbO/SlCAT3.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- MTe0
- Gene
- SlCV and SlPsbO/SlCAT3e0
- Outcome
- interaction between SlCV and SlPsbO/SlCAT3e0
- Direction
- weakenede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MT weakened the interaction between SlCV and SlPsbO/SlCAT3”
t0“tomato plants”
Claim · model-written summary
Melatonin reduced ROS production in photosystem II.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- MTe0
- Outcome
- ROS production in photosystem IIe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MT weakened the interaction between SlCV and SlPsbO/SlCAT3, reduced ROS production in photosystem II, and promoted ROS elimination”
t0“tomato plants”
Claim · model-written summary
Melatonin promoted ROS elimination.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- MTe0
- Outcome
- ROS eliminatione0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MT weakened the interaction between SlCV and SlPsbO/SlCAT3, reduced ROS production in photosystem II, and promoted ROS elimination”
t0“tomato plants”
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See all 9 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.