Abstract
The effect of potassium deficiency on the metabolism of tomato leaves was studied by the use of 14 CO 2 . After normal and potassium-deficient plants had been exposed to 14 CO 2 in the light for 5 minutes, the latter showed smaller amounts of label in starch, uridine–diphosphate–glucose, glucose, fructose, glyceric acid, phosphoenol-pyruvate, pyruvic acid, alanine, and aspartic acid. Relatively more was present in 3-phosphoglycerate, serine, glycine, and glutamine. When exposure for 5 minutes to 14 CO 2 in the light was followed by 2 hours of darkness, the potassium-deficient plants had less 14 C in glucose, fructose, alanine, and aspartic acid, but relatively more in sucrose, glycine, and glutamine.Exposure to 14 CO 2 in the dark for 2 hours resulted in less label entering aspartic acid, but relatively more in glycine in potassium-deficient plants.The results are consistent with decreased pyruvic kinase activity in potassium-deficient plants, and there is evidence of a similar effect on glyceric acid production, invertase activity, and UDPG synthesis.
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Claims 10
Claim · model-written summary
Potassium deficient tomato leaves incorporated less label into starch, uridine–diphosphate–glucose, and glucose after five minutes in light.
- Taxon
- TOMATO PLANTS
Solanum lycopersicumt0 - Treatment
- POTASSIUM-DEFICIENTt0
- Outcome
- label in starch, uridine–diphosphate–glucose, glucosee0
- Direction
- smallere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the latter showed smaller amounts of label in starch, uridine–diphosphate–glucose, glucose, fructose, glyceric acid, phosphoenol-pyruvate, pyruvic acid, alanine, and aspartic acid”
t0“POTASSIUM-DEFICIENT TOMATO PLANTS”
Claim · model-written summary
Potassium deficient plants incorporated less label into fructose, glyceric acid, phosphoenol-pyruvate, pyruvic acid, alanine, and aspartic acid after five minutes in light.
- Taxon
- TOMATO PLANTSSolanum lycopersicumt0
- Treatment
- POTASSIUM-DEFICIENTt0
- Outcome
- fructose, glyceric acid, phosphoenol-pyruvate, pyruvic acid, alanine, and aspartic acide0
- Direction
- smallere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the latter showed smaller amounts of label in starch, uridine–diphosphate–glucose, glucose, fructose, glyceric acid, phosphoenol-pyruvate, pyruvic acid, alanine, and aspartic acid”
t0“POTASSIUM-DEFICIENT TOMATO PLANTS”
Claim · model-written summary
Potassium deficient plants incorporated relatively more label into 3-phosphoglycerate, serine, glycine, and glutamine after five minutes in light.
- Taxon
- TOMATO PLANTSSolanum lycopersicumt0
- Treatment
- POTASSIUM-DEFICIENTt0
- Outcome
- 3-phosphoglycerate, serine, glycine, and glutaminee0
- Direction
- Relatively moree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Relatively more was present in 3-phosphoglycerate, serine, glycine, and glutamine.”
t0“POTASSIUM-DEFICIENT TOMATO PLANTS”
Claim · model-written summary
After light exposure then darkness, potassium deficient plants had less carbon-14 in glucose, fructose, and alanine.
- Taxon
- TOMATO PLANTSSolanum lycopersicumt0
- Treatment
- potassium-deficiente0
- Outcome
- 14 C in glucose, fructose, alaninee0
- Direction
- lesse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the potassium-deficient plants had less 14 C in glucose, fructose, alanine, and aspartic acid”
t0“TOMATO PLANTS”
Claim · model-written summary
After light exposure then darkness, potassium deficient plants had less carbon-14 in aspartic acid.
- Taxon
- TOMATO PLANTSSolanum lycopersicumt0
- Treatment
- potassium-deficiente0
- Outcome
- aspartic acide0
- Direction
- lesse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the potassium-deficient plants had less 14 C in glucose, fructose, alanine, and aspartic acid”
t0“TOMATO PLANTS”
Claim · model-written summary
After light exposure then darkness, potassium deficient plants had relatively more label in sucrose, glycine, and glutamine.
- Taxon
- TOMATO PLANTSSolanum lycopersicumt0
- Treatment
- POTASSIUM-DEFICIENTt0
- Outcome
- sucrose, glycine, and glutaminee0
- Direction
- relatively moree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but relatively more in sucrose, glycine, and glutamine”
t0“POTASSIUM-DEFICIENT TOMATO PLANTS”
Claim · model-written summary
After carbon dioxide exposure in darkness, potassium deficient plants incorporated less label into aspartic acid.
- Taxon
- TOMATO PLANTSSolanum lycopersicumt0
- Treatment
- potassium-deficiente0
- Outcome
- label entering aspartic acide0
- Direction
- lesse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“less label entering aspartic acid, but relatively more in glycine in potassium-deficient plants”
t0“TOMATO PLANTS”
Claim · model-written summary
After carbon dioxide exposure in darkness, potassium deficient plants incorporated relatively more label into glycine.
- Taxon
- TOMATO PLANTSSolanum lycopersicumt0
- Treatment
- potassium-deficiente0
- Outcome
- glycinee0
- Direction
- relatively moree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“less label entering aspartic acid, but relatively more in glycine in potassium-deficient plants”
t0“TOMATO PLANTS”
Claim · model-written summary
The metabolic results are consistent with decreased pyruvic kinase activity in potassium deficient tomato plants.
- Taxon
- TOMATO PLANTSSolanum lycopersicumt0
- Gene
- pyruvic kinasee0
- Outcome
- pyruvic kinase activitye0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“consistent with decreased pyruvic kinase activity in potassium-deficient plants”
t0“TOMATO PLANTS”
Claim · model-written summary
The results suggest decreased glyceric acid production, invertase activity, and UDPG synthesis in potassium deficient tomato plants.
- Taxon
- TOMATO PLANTSSolanum lycopersicumt0
- Treatment
- POTASSIUM-DEFICIENTt0
- Outcome
- glyceric acid production, invertase activity, and UDPG synthesise0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there is evidence of a similar effect on glyceric acid production, invertase activity, and UDPG synthesis”
t0“POTASSIUM-DEFICIENT TOMATO PLANTS”
The same questions in other papers
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This paper is about lacking the nutrient, so it counts the other way round here.
- no effect
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17 papers in the same direction as this paper · 6 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- no effect
- no effect
- no effect
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See all 24 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.