Abstract
ABSTRACT Total superoxide dismutase (SOD:superoxide: superoxide oxidoreductase; EC 1.15.1.1) activity and individual activities of its three different metalloenzymes, CuZn‐SOD, Fe‐SOD, and Mn‐SOD, were investigated during senescence of apples ( Malus domestica Borkh.). Total SOD activity and relative activities of its three forms varied greatly among cultivars. Activities underwent considerable change during senescence of fruit, but changes were different among cultivars. Whether fruit senesced at 0°C or 20°C had little effect on SOD activities, and application of the antioxidant diphenylamine (DPA) did not alter activities. SOD activities increased with occurrence of the physiological disorder “senescent breakdown,” but did not increase with occurrence of the disorder “superficial scald.” In a given apple cultivar, changes in total SOD activity generally paralleled activities of the different SOD forms. Such activity may reflect changes affecting food and nutritive quality of the fruit.
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Claims 7
Claim · model-written summary
Total and individual SOD activities varied greatly among apple cultivars.
- Taxon
- Apple
Malus domesticat0 - Gene
- SODe0
- Outcome
- Total SOD activity and relative activities of its three formse0
- Direction
- varied greatlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total SOD activity and relative activities of its three forms varied greatly among cultivars.”
t0“Apple Fruit”
Claim · model-written summary
Apple fruit SOD activity changed during senescence, with cultivar dependent changes.
- Taxon
- AppleMalus domesticat0
- Organ / stage
- fruite0
- Outcome
- Activitiese0
- Qualifier
- changes were different among cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Activities underwent considerable change during senescence of fruit, but changes were different among cultivars.”
t0“Apple Fruit”
Claim · model-written summary
Senescence at 0°C or 20°C had little effect on apple fruit SOD activities.
- Taxon
- AppleMalus domesticat0
- Treatment
- 0°Ce0
- Outcome
- SOD activitiese0
- Direction
- little effecte0
- Comparator
- 20°Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Whether fruit senesced at 0°C or 20°C had little effect on SOD activities”
t0“Apple Fruit”
Claim · model-written summary
Diphenylamine application did not alter apple fruit SOD activities.
- Taxon
- AppleMalus domesticat0
- Treatment
- diphenylamine (DPA)e0
- Outcome
- activitiese0
- Direction
- did not altere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of the antioxidant diphenylamine (DPA) did not alter activities”
t0“Apple Fruit”
Claim · model-written summary
Apple SOD activities increased with senescent breakdown.
- Taxon
- AppleMalus domesticat0
- Organ / stage
- Fruitt0
- Outcome
- SOD activitiese0
- Direction
- increasede0
- Qualifier
- senescent breakdowne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SOD activities increased with occurrence of the physiological disorder “senescent breakdown,””
t0“Apple Fruit”
Claim · model-written summary
Apple SOD activities did not increase with superficial scald.
- Taxon
- AppleMalus domesticat0
- Organ / stage
- Fruitt0
- Outcome
- SOD activitiese0
- Direction
- did not increasee0
- Qualifier
- superficial scalde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SOD activities increased with occurrence of the physiological disorder “senescent breakdown,” but did not increase with occurrence of the disorder “superficial scald.””
t0“Apple Fruit”
Claim · model-written summary
Changes in total apple SOD activity generally paralleled activities of different SOD forms within a cultivar.
- Taxon
- appleMalus domesticae0
- Gene
- SOD formse0
- Outcome
- total SOD activitye0
- Direction
- parallelede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In a given apple cultivar, changes in total SOD activity generally paralleled activities of the different SOD forms.”