Abstract
In order to study the effect of salicylic acid on the cold resistance of postharvest plum fruits and its relationship with ethylene signal,in this study,medium-maturation(Bulang)plum fruits were used as materials. It were treated with 1.0 mmol/L SA and 1.0 μL/L 1-MCP separately and in combination,and treated with distilled water as a control group. The effects of the above treatment on the chilling injury rate,chilling injury index,peroxidase(POD),polyphenol oxidase(PPO),cell membrane permeability,malondialdehyde(MDA)content,superoxide dismutase(SOD)and catalase(CAT)activities of plum fruits under storage conditions at 4℃ were analyzed. The results showed that SA treatment could significantly reduce the chilling injury rate and chilling injury index(P<0.05),delay the increase of POD and PPO activity,delay flesh browning,mitigate chilling injury symptoms. Moreover,it could also augment the activities of SOD and CAT(P<0.05),and maintain lower levels of cell membrane permeability and MDA. Thereby,it had a certain inhibitory effect on the occurrence of cell membrane lipid peroxidation. The experiment also found that SA combined with 1-MCP treatment significantly inhibited the occurrence of chilling injury in the middle of storage(P<0.05),but the accumulation rate of chilling injury was higher than that of SA treatment,and 1-MCP treatment accelerated the accumulation of chilling damage. The above results indicate that the appropriate concentration of exogenous SA treatment can enhance the cold resistance of plum fruit after harvest,and ethylene signal participates in the process,but it is not a dependent factor.
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Claims 11
Claim · model-written summary
SA significantly reduced chilling injury rate and index in stored plum fruit.
- Taxon
- plum
Prunus domesticae0 - Treatment
- SA treatmente1
- Outcome
- chilling injury rate and chilling injury indexe1
- Direction
- reducee1
- Value
- P<0.05e1
- Comparator
- distilled watere2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“postharvest plum fruits”
e1“SA treatment could significantly reduce the chilling injury rate and chilling injury index(P<0.05)”
e2“treated with distilled water as a control group”
Claim · model-written summary
SA delayed increases in POD and PPO activity.
- Taxon
- plumPrunus domesticae0
- Treatment
- SAe2
- Outcome
- POD and PPO activitye1
- Direction
- delay the increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“postharvest plum fruits”
e1“delay the increase of POD and PPO activity”
e2“SA treatment could significantly reduce”
Claim · model-written summary
SA delayed flesh browning and mitigated chilling injury symptoms.
- Taxon
- plumPrunus domesticae0
- Treatment
- SAe2
- Outcome
- flesh browning,mitigate chilling injury symptomse1
- Direction
- delaye1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“postharvest plum fruits”
e1“delay flesh browning,mitigate chilling injury symptoms”
e2“SA treatment could significantly reduce”
Claim · model-written summary
SA significantly augmented SOD and CAT activities.
- Taxon
- plumPrunus domesticae0
- Treatment
- SAe2
- Outcome
- activities of SOD and CATe1
- Direction
- augmente1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“postharvest plum fruits”
e1“augment the activities of SOD and CAT(P<0.05)”
e2“SA treatment could significantly reduce”
Claim · model-written summary
SA maintained lower membrane permeability and MDA levels.
- Taxon
- plumPrunus domesticae0
- Treatment
- SAe2
- Outcome
- cell membrane permeability and MDAe1
- Direction
- lowere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“postharvest plum fruits”
e1“maintain lower levels of cell membrane permeability and MDA”
e2“SA treatment could significantly reduce”
Claim · model-written summary
SA was interpreted as inhibiting cell membrane lipid peroxidation.
- Taxon
- plumPrunus domesticae0
- Outcome
- cell membrane lipid peroxidatione1
- Qualifier
- inhibitory effecte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“postharvest plum fruits”
e1“it had a certain inhibitory effect on the occurrence of cell membrane lipid peroxidation”
Claim · model-written summary
SA combined with 1-MCP significantly inhibited chilling injury in the middle of storage.
- Taxon
- plumPrunus domesticae0
- Treatment
- SA combined with 1-MCP treatmente1
- Outcome
- occurrence of chilling injurye1
- Direction
- inhibitede1
- Qualifier
- middle of storagee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“postharvest plum fruits”
e1“SA combined with 1-MCP treatment significantly inhibited the occurrence of chilling injury in the middle of storage(P<0.05)”
Claim · model-written summary
Chilling injury accumulated faster with combined SA and 1-MCP than with SA alone.
- Taxon
- plumPrunus domesticae0
- Outcome
- accumulation rate of chilling injurye1
- Direction
- highere1
- Comparator
- SA treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“postharvest plum fruits”
e1“the accumulation rate of chilling injury was higher than that of SA treatment”
Claim · model-written summary
1-MCP accelerated accumulation of chilling damage.
- Taxon
- plumPrunus domesticae0
- Treatment
- 1-MCP treatmente1
- Outcome
- accumulation of chilling damagee1
- Direction
- acceleratede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“postharvest plum fruits”
e1“1-MCP treatment accelerated the accumulation of chilling damage”
Claim · model-written summary
The authors concluded that exogenous SA enhances postharvest plum cold resistance.
- Taxon
- plumPrunus domesticae0
- Treatment
- exogenous SA treatmente0
- Outcome
- cold resistance of plum fruite0
- Direction
- enhancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous SA treatment can enhance the cold resistance of plum fruit after harvest”
Claim · model-written summary
The authors concluded that ethylene signalling participates in SA-mediated cold resistance but is not required.
- Taxon
- plumPrunus domesticae0
- Outcome
- cold resistance of plum fruite0
- Qualifier
- ethylene signal participates in the process,but it is not a dependent factore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cold resistance of plum fruit after harvest,and ethylene signal participates in the process,but it is not a dependent factor”
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- positive
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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.