Abstract
The ability of discs of apple cortical tissue to take up calcium from salt solutions declined during fruit development. This was true for both the cellular and free-space components of uptake. The extent of reduction was greatest in the slow, linear phase of uptake, which in young fruit had a metabolic component inhibited at 4°C. Free-space uptake contributed some 80% of the total uptake capacity and dominated calcium loss in wash-out experiments. The magnitude of calcium uptake was reduced in the presence of 10-3 M magnesium but not by equivalent concentrations of potassium. Because of the low rate of calcium uptake into the cytoplasm and vacuole, we suggest that the greatest effect of calcium treatments used to control disorders such as bitter pit is to change the extracellular environment.
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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
Calcium uptake by apple cortical discs declined during fruit development.
- Taxon
- apple
Malus domesticae0 - Organ / stage
- fruit developmente0
- Outcome
- take up calciume0
- Direction
- declinede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ability of discs of apple cortical tissue to take up calcium from salt solutions declined during fruit development.”
Claim · model-written summary
Both cellular and free-space calcium uptake declined.
- Taxon
- AppleMalus domesticat0
- Outcome
- cellular and free-space components of uptakee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This was true for both the cellular and free-space components of uptake.”
t0“Apple”
Claim · model-written summary
The decline was greatest in the slow linear uptake phase.
- Taxon
- AppleMalus domesticat0
- Outcome
- reductione0
- Direction
- greateste0
- Qualifier
- slow, linear phase of uptakee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The extent of reduction was greatest in the slow, linear phase of uptake”
t0“Apple”
Claim · model-written summary
Young fruit had a metabolic uptake component inhibited at 4°C.
- Taxon
- AppleMalus domesticat0
- Organ / stage
- young fruite0
- Treatment
- 4°Ce0
- Outcome
- metabolic componente0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which in young fruit had a metabolic component inhibited at 4°C.”
t0“Apple”
Claim · model-written summary
Free-space uptake accounted for about 80% of uptake capacity.
- Taxon
- AppleMalus domesticat0
- Outcome
- Free-space uptakee0
- Value
- 80%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Free-space uptake contributed some 80% of the total uptake capacity”
t0“Apple”
Claim · model-written summary
Free-space uptake dominated calcium loss in wash-out experiments.
- Taxon
- AppleMalus domesticat0
- Outcome
- calcium losse0
- Direction
- dominatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dominated calcium loss in wash-out experiments”
t0“Apple”
Claim · model-written summary
Magnesium reduced calcium uptake.
- Taxon
- AppleMalus domesticat0
- Treatment
- 10-3 M magnesiume0
- Outcome
- calcium uptakee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The magnitude of calcium uptake was reduced in the presence of 10-3 M magnesium”
t0“Apple”
Claim · model-written summary
Equivalent potassium concentrations did not reduce calcium uptake.
- Taxon
- AppleMalus domesticat0
- Treatment
- equivalent concentrations of potassiume0
- Outcome
- calcium uptakee2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Schema note from the model: requires a second quote for the outcome
Verbatim
e0“but not by equivalent concentrations of potassium”
e1“but not by equivalent concentrations of potassium”
e2“The magnitude of calcium uptake was reduced in the presence of 10-3 M magnesium”
t0“Apple”
The same questions in other papers
magnesium atom · nutrient: content · Malus domestica (apple)Positive and negative results
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- positive
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See all 7 papers →potassium · nutrient: content · Malus domestica (apple)Positive and negative results
5 papers in the same direction as this paper · 13 in the opposite direction
- positive
- positive
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See all 19 papers →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.