Abstract
The effects of applying ethylene (2 microL x L(-)(1)) during cold storage of Fortune mandarins on the development of chilling-induced peel damage and on changes in the activities of the enzymes of the antioxidant system, superoxide dismutase, catalase (CAT), ascorbate peroxidase, guaiacol peroxidase, and glutathione reductase, and on phenylalanine ammonia-lyase (PAL) have been investigated. Chilling damage was reduced by applying ethylene during fruit storage at 1.5 degrees C. PAL activity increased in response to cold stress and was higher in fruit held under ethylene than under air during the whole storage period, whereas CAT was temporarily higher in ethylene-treated fruit. In contrast, the activities of the other enzymes were not increased by ethylene. The global results suggest that the ethylene-induced chilling tolerance in Fortune mandarins might be due to increased PAL and CAT activities.
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Claims 5
Claim · model-written summary
Ethylene reduced chilling damage in fruit stored at 1.5 degrees C.
CitrusNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chilling damage was reduced by applying ethylene during fruit storage at 1.5 degrees C.”
t0“Citrus Fruit”
Claim · model-written summary
Cold stress increased PAL activity.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PAL activity increased in response to cold stress”
t0“Citrus Fruit”
Claim · model-written summary
PAL activity was higher with ethylene than air through storage.
- Treatment
- ethylenee0
- Gene
- PALe0
- Outcome
- PAL activitye0
- Direction
- highere0
- Qualifier
- during the whole storage periode0
- Comparator
- aire0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PAL activity increased in response to cold stress and was higher in fruit held under ethylene than under air during the whole storage period”
t0“Phenylalanine Ammonia-lyase in the Ethylene-Induced Chilling Tolerance in Citrus Fruit”
Claim · model-written summary
CAT activity was temporarily higher in ethylene treated fruit.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CAT was temporarily higher in ethylene-treated fruit”
t0“Citrus Fruit”
Claim · model-written summary
Other antioxidant enzyme activities were not increased by ethylene.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the activities of the other enzymes were not increased by ethylene”
t0“Citrus Fruit”
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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.