Abstract
Abstract Tomato plants ( Lycopersicon esculentum Mill. ‘Heinz 1350’, yellow-green-5 , and neglecta- 1) were grown in sand culture with 15 m m or and with K + varying from 0 to 8 m m . Other nutrients were provided at the concentrations of Hoagland's solution. The medium supplying was buffered with CaCO 3 (pH 6.9) or was unbuffered (pH 3.4). Silver ions (0.01 μ m ) were incorporated in the nutrient solution in one experiment. Ammonium nutrition relative to nutrition elevated rates of ethylene evolution from all genotypes, but yg- 5 and neg- 1 showed resistance to toxicity and exhibited relatively low ethylene evolution. Ethylene evolution declined as K + supply increased. Accelerated rates of ethylene evolution did not occur at tissue K + concentrations >10 g·kg −1 of the dry weights of shoots with nutrition, but higher K + levels were required with nutrition. Putrescine concentrations in leaves of ‘Heinz 1350’ supplied with were 2 to 5 times greater than in leaves of plants supplied with . Potassium deficiency increased putrescine accumulation regardless of N form. Spermidine concentrations in leaves of plants supplied with were lower than in those supplied with , whereas spermine concentrations were unaffected by treatments. ‘Heinz 1350’ grown in -based nutrient solutions with 0.01 μΜ Ag + had low rates of ethylene evolution and developed few symptoms of toxicity. Quantities of ethylene and putrescine produced by tomato genotypes susceptible to the nutritional stresses were linked directly to the degree of stress imposed, and symptoms of toxicity were related to increased ethylene synthesis.
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Claims 15
Claim · model-written summary
Ammonium nutrition elevated ethylene evolution in all tomato genotypes relative to the comparison nutrition.
- Taxon
- Tomato
Solanum lycopersicumt0 - Treatment
- Ammonium nutritione0
- Outcome
- rates of ethylene evolutione0
- Direction
- elevatede0
- Comparator
- nutritione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ammonium nutrition relative to nutrition elevated rates of ethylene evolution from all genotypes, but yg- 5 and neg- 1 showed resistance to toxicity and exhibited relatively low ethylene evolution.”
t0“Tomato”
Claim · model-written summary
The yg- 5 tomato genotype resisted toxicity and had relatively low ethylene evolution.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- yg- 5e0
- Outcome
- resistance to toxicity and exhibited relatively low ethylene evolutione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yg- 5 and neg- 1 showed resistance to toxicity and exhibited relatively low ethylene evolution.”
t0“Tomato”
Claim · model-written summary
The neg- 1 tomato genotype resisted toxicity and had relatively low ethylene evolution.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- neg- 1e0
- Outcome
- resistance to toxicity and exhibited relatively low ethylene evolutione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yg- 5 and neg- 1 showed resistance to toxicity and exhibited relatively low ethylene evolution.”
t0“Tomato”
Claim · model-written summary
Tomato ethylene evolution declined as potassium supply increased.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- K + supplye0
- Outcome
- Ethylene evolutione0
- Direction
- declinede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ethylene evolution declined as K + supply increased.”
t0“Tomato”
Claim · model-written summary
Accelerated tomato ethylene evolution did not occur above the stated tissue potassium threshold with the damaged nutrition designation.
- Taxon
- TomatoSolanum lycopersicumt0
- Organ / stage
- shootse0
- Outcome
- Accelerated rates of ethylene evolution did not occure0
- Value
- >10 g·kg −1e0
- Qualifier
- with nutritione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Accelerated rates of ethylene evolution did not occur at tissue K + concentrations >10 g·kg −1 of the dry weights of shoots with nutrition, but higher K + levels were required with nutrition.”
t0“Tomato”
Claim · model-written summary
The alternate damaged nutrition designation required higher tomato tissue potassium levels to prevent accelerated ethylene evolution.
- Taxon
- TomatoSolanum lycopersicumt0
- Outcome
- higher K + levels were requirede0
- Direction
- highere0
- Qualifier
- with nutritione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but higher K + levels were required with nutrition.”
t0“Tomato”
Claim · model-written summary
Leaf putrescine in Heinz 1350 was two to five times greater under one damaged nutrient designation than the other.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- ‘Heinz 1350’e0
- Organ / stage
- leavese0
- Outcome
- Putrescine concentrationse0
- Direction
- greatere0
- Value
- 2 to 5 timese0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Putrescine concentrations in leaves of ‘Heinz 1350’ supplied with were 2 to 5 times greater than in leaves of plants supplied with .”
t0“Tomato”
Claim · model-written summary
Potassium deficiency increased tomato putrescine accumulation regardless of nitrogen form.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- Potassium deficiencye0
- Outcome
- putrescine accumulatione0
- Direction
- increasede0
- Qualifier
- regardless of N forme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potassium deficiency increased putrescine accumulation regardless of N form.”
t0“Tomato”
Claim · model-written summary
Tomato leaf spermidine concentrations were lower under one damaged nutrient designation than the other.
- Taxon
- TomatoSolanum lycopersicumt0
- Organ / stage
- leavese0
- Outcome
- Spermidine concentrationse0
- Direction
- lowere0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spermidine concentrations in leaves of plants supplied with were lower than in those supplied with , whereas spermine concentrations were unaffected by treatments.”
t0“Tomato”
Claim · model-written summary
Tomato spermine concentrations were unaffected by the treatments.
- Taxon
- TomatoSolanum lycopersicumt0
- Treatment
- treatmentse0
- Outcome
- spermine concentrationse0
- Direction
- unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spermine concentrations were unaffected by treatments.”
t0“Tomato”
Claim · model-written summary
Silver-treated Heinz 1350 tomato plants had low ethylene evolution.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- ‘Heinz 1350’e0
- Treatment
- 0.01 μΜ Ag +e0
- Outcome
- rates of ethylene evolutione0
- Direction
- lowe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘Heinz 1350’ grown in -based nutrient solutions with 0.01 μΜ Ag + had low rates of ethylene evolution and developed few symptoms of toxicity.”
t0“Tomato”
Claim · model-written summary
Silver-treated Heinz 1350 tomato plants developed few toxicity symptoms.
- Taxon
- TomatoSolanum lycopersicumt0
- Material
- ‘Heinz 1350’e0
- Treatment
- 0.01 μΜ Ag +e0
- Outcome
- symptoms of toxicitye0
- Direction
- fewe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘Heinz 1350’ grown in -based nutrient solutions with 0.01 μΜ Ag + had low rates of ethylene evolution and developed few symptoms of toxicity.”
t0“Tomato”
Claim · model-written summary
Ethylene production in susceptible tomato genotypes was directly linked to degree of nutritional stress.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- genotypes susceptible to the nutritional stressese0
- Outcome
- Quantities of ethylenee0
- Qualifier
- degree of stress imposede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Quantities of ethylene and putrescine produced by tomato genotypes susceptible to the nutritional stresses were linked directly to the degree of stress imposed, and symptoms of toxicity were related to increased ethylene synthesis.”
Claim · model-written summary
Putrescine production in susceptible tomato genotypes was directly linked to degree of nutritional stress.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- genotypes susceptible to the nutritional stressese0
- Outcome
- putrescine producede0
- Qualifier
- degree of stress imposede0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Quantities of ethylene and putrescine produced by tomato genotypes susceptible to the nutritional stresses were linked directly to the degree of stress imposed, and symptoms of toxicity were related to increased ethylene synthesis.”
Claim · model-written summary
Tomato toxicity symptoms were related to increased ethylene synthesis.
- Taxon
- TomatoSolanum lycopersicumt0
- Compound
- ethylenee0
- Outcome
- symptoms of toxicitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“symptoms of toxicity were related to increased ethylene synthesis.”
t0“Tomato”
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