Abstract
Melatonin, as a plant growth regulator, is involved in plant stress resistance. We studied the effects of different concentrations (0, 10, 50, 100, 150, and 200 µmol · L−1) of melatonin on the growth and physiological characteristics of strawberry under cadmium (Cd) stress. The results represented that the growth of strawberry seedlings was inhibited under Cd stress, and the seedling biomass, chlorophyll content and the activities of antioxidant enzymes such as superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and ascorbate peroxidase (APX) decreased. These toxic effects were, however, effectively remediated by exogenous melatonin pretreatment. Melatonin treatment slowed the inhibitory effect of seedling growth and significantly increased seedling biomass, chlorophyll content, antioxidant enzyme activities, and soluble protein levels in leaves and roots compared with the control. Melatonin treatment also reduced the malondialdehyde (MDA) content and the oxidative stress reactions, increased the anthocyanin content, and slowed the senescence rate, thereby reducing the toxic effects of Cd on strawberries. This indicates that foliar application of melatonin can effectively remediate the adverse effects of Cd on strawberry seedlings; the greatest effect was obtained with melatonin concentration of 100 µmol · L−1.
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Claims 10
Claim · model-written summary
Cadmium stress inhibited the growth of strawberry seedlings.
- Taxon
- strawberry
_single2.jpg?width=60)
Fragaria ×ananassae0 - Treatment
- Cd stresse1
- Outcome
- growth of strawberry seedlingse1
- Direction
- inhibitede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“We studied the effects of different concentrations (0, 10, 50, 100, 150, and 200 µmol · L−1) of melatonin on the growth and physiological characteristics of strawberry under cadmium (Cd) stress”
e1“The results represented that the growth of strawberry seedlings was inhibited under Cd stress”
Claim · model-written summary
Cadmium stress decreased seedling biomass and chlorophyll content.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- cadmium (Cd) stresse0
- Outcome
- seedling biomass, chlorophyll contente1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We studied the effects of different concentrations (0, 10, 50, 100, 150, and 200 µmol · L−1) of melatonin on the growth and physiological characteristics of strawberry under cadmium (Cd) stress”
e1“the seedling biomass, chlorophyll content and the activities of antioxidant enzymes such as superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and ascorbate peroxidase (APX) decreased”
Claim · model-written summary
Cadmium stress decreased the activities of antioxidant enzymes in strawberry seedlings.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- cadmium (Cd) stresse0
- Outcome
- activities of antioxidant enzymese1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We studied the effects of different concentrations (0, 10, 50, 100, 150, and 200 µmol · L−1) of melatonin on the growth and physiological characteristics of strawberry under cadmium (Cd) stress”
e1“the seedling biomass, chlorophyll content and the activities of antioxidant enzymes such as superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and ascorbate peroxidase (APX) decreased”
Claim · model-written summary
Melatonin under Cd stress significantly increased seedling biomass and chlorophyll content compared with the control.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- Melatonin treatmente2
- Outcome
- seedling biomass, chlorophyll contente2
- Direction
- increasede2
- Comparator
- the controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We studied the effects of different concentrations (0, 10, 50, 100, 150, and 200 µmol · L−1) of melatonin on the growth and physiological characteristics of strawberry under cadmium (Cd) stress”
e2“Melatonin treatment slowed the inhibitory effect of seedling growth and significantly increased seedling biomass, chlorophyll content, antioxidant enzyme activities, and soluble protein levels in leaves and roots compared with the control”
Claim · model-written summary
Melatonin under Cd stress significantly increased antioxidant enzyme activities and soluble protein levels in leaves and roots compared with the control.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- Melatonin treatmente2
- Outcome
- antioxidant enzyme activities, and soluble protein levels in leaves and rootse2
- Direction
- increasede2
- Comparator
- the controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We studied the effects of different concentrations (0, 10, 50, 100, 150, and 200 µmol · L−1) of melatonin on the growth and physiological characteristics of strawberry under cadmium (Cd) stress”
e2“Melatonin treatment slowed the inhibitory effect of seedling growth and significantly increased seedling biomass, chlorophyll content, antioxidant enzyme activities, and soluble protein levels in leaves and roots compared with the control”
Claim · model-written summary
Melatonin reduced malondialdehyde content and oxidative stress in Cd-stressed strawberry seedlings.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- Melatonin treatmente3
- Outcome
- malondialdehyde (MDA) contente3
- Direction
- reducede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We studied the effects of different concentrations (0, 10, 50, 100, 150, and 200 µmol · L−1) of melatonin on the growth and physiological characteristics of strawberry under cadmium (Cd) stress”
e3“Melatonin treatment also reduced the malondialdehyde (MDA) content and the oxidative stress reactions, increased the anthocyanin content, and slowed the senescence rate”
Claim · model-written summary
Melatonin increased anthocyanin content in Cd-stressed strawberry seedlings.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- Melatonin treatmente3
- Outcome
- anthocyanin contente3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We studied the effects of different concentrations (0, 10, 50, 100, 150, and 200 µmol · L−1) of melatonin on the growth and physiological characteristics of strawberry under cadmium (Cd) stress”
e3“Melatonin treatment also reduced the malondialdehyde (MDA) content and the oxidative stress reactions, increased the anthocyanin content, and slowed the senescence rate”
Claim · model-written summary
Melatonin slowed the senescence rate of Cd-stressed strawberry seedlings.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- Melatonin treatmente3
- Outcome
- senescence ratee3
- Direction
- slowede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We studied the effects of different concentrations (0, 10, 50, 100, 150, and 200 µmol · L−1) of melatonin on the growth and physiological characteristics of strawberry under cadmium (Cd) stress”
e3“Melatonin treatment also reduced the malondialdehyde (MDA) content and the oxidative stress reactions, increased the anthocyanin content, and slowed the senescence rate”
Claim · model-written summary
Foliar application of melatonin can remediate the adverse effects of Cd on strawberry seedlings.
- Taxon
- strawberry seedlingsFragaria ×ananassae4
- Treatment
- foliar application of melatonine4
- Outcome
- adverse effects of Cde4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“This indicates that foliar application of melatonin can effectively remediate the adverse effects of Cd on strawberry seedlings; the greatest effect was obtained with melatonin concentration of 100 µmol · L−1”
Claim · model-written summary
The melatonin concentration of 100 µmol · L−1 gave the greatest effect.
- Taxon
- strawberry seedlingsFragaria ×ananassae4
- Treatment
- melatonin concentration of 100 µmol · L−1e4
- Outcome
- effecte4
- Direction
- greateste4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“This indicates that foliar application of melatonin can effectively remediate the adverse effects of Cd on strawberry seedlings; the greatest effect was obtained with melatonin concentration of 100 µmol · L−1”
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See all 5 papers →8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.