Abstract
Melatonin found in tomato (Solanum lycopersicum L.) has important roles in its metabolism. Effects of exogenously applied melatonin on tomato plants under drought are unclear. Exogenous melatonin was applied to leaves of tomato seedlings treated with polyethylene glycol (PEG), which simulates drought, to evaluate the potential role of melatonin in drought tolerance. Total chlorophyll, some phenolic compounds, malondialdehyde (MDA) contents, and activities of antioxidant enzymes were measured. Exogenous melatonin increased total chlorophyll content and inhibited MDA content under PEG application. There was an increase in p-coumaric acid content and antioxidant enzyme activities (superoxide dismutase, glutathione reductase, ascorbate peroxidase) due to melatonin application. Exogenous melatonin could help alleviate deleterious effects of PEG by enhancing antioxidant mediated defense and by increasing contents of some phenolics.
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Claims 5
Claim · model-written summary
Exogenous melatonin increased total chlorophyll content in tomato seedlings under PEG application.
- Taxon
- tomato
Solanum lycopersicume0 - Organ / stage
- leavese0
- Treatment
- Exogenous melatonine1
- Outcome
- total chlorophyll contente1
- Direction
- increasede1
- Qualifier
- under PEG applicatione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous melatonin was applied to leaves of tomato seedlings”
e1“Exogenous melatonin increased total chlorophyll content and inhibited MDA content under PEG application”
Claim · model-written summary
Exogenous melatonin inhibited MDA content in tomato seedlings under PEG application.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- leavese0
- Treatment
- Exogenous melatonine1
- Outcome
- MDA contente1
- Direction
- inhibitede1
- Qualifier
- under PEG applicatione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous melatonin was applied to leaves of tomato seedlings”
e1“Exogenous melatonin increased total chlorophyll content and inhibited MDA content under PEG application”
Claim · model-written summary
Melatonin application increased p-coumaric acid content in tomato seedlings.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- leavese0
- Treatment
- melatonin applicatione2
- Outcome
- p-coumaric acid contente2
- Direction
- increasee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous melatonin was applied to leaves of tomato seedlings”
e2“There was an increase in p-coumaric acid content and antioxidant enzyme activities (superoxide dismutase, glutathione reductase, ascorbate peroxidase) due to melatonin application”
Claim · model-written summary
Melatonin application increased antioxidant enzyme activities (superoxide dismutase, glutathione reductase, ascorbate peroxidase) in tomato seedlings.
- Taxon
- tomatoSolanum lycopersicume0
- Organ / stage
- leavese0
- Treatment
- melatonin applicatione2
- Gene
- superoxide dismutase, glutathione reductase, ascorbate peroxidasee2
- Outcome
- antioxidant enzyme activitiese2
- Direction
- increasee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous melatonin was applied to leaves of tomato seedlings”
e2“There was an increase in p-coumaric acid content and antioxidant enzyme activities (superoxide dismutase, glutathione reductase, ascorbate peroxidase) due to melatonin application”
Claim · model-written summary
Exogenous melatonin could help alleviate deleterious effects of PEG in tomato by enhancing antioxidant mediated defense.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- Exogenous melatonine3
- Outcome
- alleviate deleterious effects of PEGe3
- Qualifier
- by enhancing antioxidant mediated defensee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous melatonin was applied to leaves of tomato seedlings”
e3“Exogenous melatonin could help alleviate deleterious effects of PEG by enhancing antioxidant mediated defense and by increasing contents of some phenolics”
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