Abstract
The strawberry (Fragaria × ananassa Duch.) is an important fruit crop cultivated worldwide for its unique taste and nutritional properties. One of the major risks associated with strawberry production is cold damage. Recently, melatonin has emerged as a multifunctional signaling molecule that influences plant growth and development and reduces adverse consequences of cold stress. The present study was conducted to investigate the defensive role of melatonin and its potential interrelation with abscisic acid (ABA) in strawberry plants under cold stress. The results demonstrate that melatonin application conferred improved cold tolerance on strawberry seedlings by reducing malondialdehyde and hydrogen peroxide contents under cold stress. Conversely, pretreatment of strawberry plants with 100 μM melatonin increased soluble sugar contents and different antioxidant enzyme activities (ascorbate peroxidase, catalase, and peroxidase) and non-enzymatic antioxidant (ascorbate and glutathione) activities under cold stress. Furthermore, exogenous melatonin treatment stimulated the expression of the DREB/CBF—COR pathways’ downstream genes. Interestingly, ABA treatment did not change the expression of the DREB/CBF—COR pathway. These findings imply that the DREB/CBF-COR pathway confers cold tolerance on strawberry seedlings through exogenous melatonin application. Taken together, our results reveal that melatonin (100 μM) pretreatment protects strawberry plants from the damages induced by cold stress through enhanced antioxidant defense potential and modulating the DREB/CBF—COR pathway.
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Claims 8
Claim · model-written summary
Melatonin improved cold tolerance of strawberry seedlings under cold stress.
- Taxon
- strawberry
_single2.jpg?width=60)
Fragaria ×ananassae0 - Treatment
- melatonin applicatione0
- Outcome
- cold tolerancee0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“melatonin application conferred improved cold tolerance on strawberry seedlings by reducing malondialdehyde and hydrogen peroxide contents under cold stress.”
Claim · model-written summary
Melatonin reduced malondialdehyde and hydrogen peroxide contents under cold stress.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- melatonin applicatione0
- Outcome
- malondialdehyde and hydrogen peroxide contentse0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“melatonin application conferred improved cold tolerance on strawberry seedlings by reducing malondialdehyde and hydrogen peroxide contents under cold stress.”
Claim · model-written summary
Pretreatment with 100 μM melatonin increased soluble sugar contents under cold stress.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- 100 μM melatonine0
- Outcome
- soluble sugar contentse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pretreatment of strawberry plants with 100 μM melatonin increased soluble sugar contents and different antioxidant enzyme activities (ascorbate peroxidase, catalase, and peroxidase) and non-enzymatic antioxidant (ascorbate and glutathione) activities under cold stress.”
Claim · model-written summary
Pretreatment with 100 μM melatonin increased ascorbate peroxidase, catalase and peroxidase activities under cold stress.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- 100 μM melatonine0
- Gene
- ascorbate peroxidase, catalase, and peroxidasee0
- Outcome
- antioxidant enzyme activitiese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pretreatment of strawberry plants with 100 μM melatonin increased soluble sugar contents and different antioxidant enzyme activities (ascorbate peroxidase, catalase, and peroxidase) and non-enzymatic antioxidant (ascorbate and glutathione) activities under cold stress.”
Claim · model-written summary
Pretreatment with 100 μM melatonin increased ascorbate and glutathione antioxidant activities under cold stress.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- 100 μM melatonine0
- Outcome
- non-enzymatic antioxidant (ascorbate and glutathione) activitiese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pretreatment of strawberry plants with 100 μM melatonin increased soluble sugar contents and different antioxidant enzyme activities (ascorbate peroxidase, catalase, and peroxidase) and non-enzymatic antioxidant (ascorbate and glutathione) activities under cold stress.”
Claim · model-written summary
Exogenous melatonin stimulated expression of downstream DREB/CBF—COR pathway genes.
- Treatment
- exogenous melatonin treatmente0
- Outcome
- expression of the DREB/CBF—COR pathways’ downstream genese0
- Direction
- stimulatede0
Not reportedTaxonComparator
Verbatim
e0“exogenous melatonin treatment stimulated the expression of the DREB/CBF—COR pathways’ downstream genes.”
Claim · model-written summary
ABA treatment did not change DREB/CBF—COR pathway expression.
Not reportedTaxonComparator
Verbatim
e0“ABA treatment did not change the expression of the DREB/CBF—COR pathway.”
Claim · model-written summary
The authors infer that DREB/CBF-COR pathway modulation and enhanced antioxidant defense mediate melatonin protection against cold damage.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- melatonin (100 μM) pretreatmente0
- Outcome
- damages induced by cold stresse0
- Qualifier
- enhanced antioxidant defense potential and modulating the DREB/CBF—COR pathwaye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“melatonin (100 μM) pretreatment protects strawberry plants from the damages induced by cold stress through enhanced antioxidant defense potential and modulating the DREB/CBF—COR pathway.”
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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.