Abstract
Abstract Three tomato cvs., Blizzard, Liberto, and Calypso, were grown hydroponically in a controlled temperature (C.T.) room for six weeks at three zinc (Zn) concentrations (0.01, 0.5, and 5.0 mg Zn L‐1) in the nutrient solution. There were significant reductions in the dry matter and chlorophyll contents of all three cultivars grown at both low (0.01 mg L‐1) and high (5 mg L‐1) Zn as compared to 0.5 mg Zn L‐1. The concentration of Zn at 0.01 mg L‐1 was not sufficient to provide for optimal plant growth, while 5 mg Zn L‐1 in the nutrient solution was detrimental to plant growth for all three cultivars. The best results for all parameters tested were for the plants grown at 0.5 mg Zn L‐1. The concentration of phosphorus (P) was at an excess level in leaves of plants grown in 0.01 mg Zn L‐1, while it was deficient in the 5 mg Zn L‐1 treatment. Acid Phosphatase Enzyme [EC.3.1.3.2.] (APE) activity was significantly higher in both the leaves and roots of P‐deficient plants, i.e., plants receiving high (5 mg L‐1) Zn. Acid Phosphatase Enzyme activity was slightly higher in the mature leaves than those in developing leaves, where P concentration was higher. Concentration of P and, in particular Zn, increased in the roots with increasing Zn in the nutrient solution. The APE activity increased in the roots of P‐deficient plants receiving high Zn (5 mg L‐1).
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Claims 12
Claim · model-written summary
Low zinc significantly reduced dry matter in all three tomato cultivars relative to 0.5 mg Zn L‐1.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- low (0.01 mg L‐1)e0
- Outcome
- dry mattere0
- Direction
- reductionse0
- Comparator
- 0.5 mg Zn L‐1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were significant reductions in the dry matter and chlorophyll contents of all three cultivars grown at both low (0.01 mg L‐1) and high (5 mg L‐1) Zn as compared to 0.5 mg Zn L‐1”
t0“tomato cultivars”
Claim · model-written summary
High zinc significantly reduced dry matter in all three cultivars.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- high (5 mg L‐1) Zne0
- Outcome
- dry mattere0
- Direction
- reductionse0
- Comparator
- 0.5 mg Zn L‐1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were significant reductions in the dry matter and chlorophyll contents of all three cultivars grown at both low (0.01 mg L‐1) and high (5 mg L‐1) Zn as compared to 0.5 mg Zn L‐1”
t0“tomato cultivars”
Claim · model-written summary
Low zinc significantly reduced chlorophyll content.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- low (0.01 mg L‐1)e0
- Outcome
- chlorophyll contentse0
- Direction
- reductionse0
- Comparator
- 0.5 mg Zn L‐1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were significant reductions in the dry matter and chlorophyll contents of all three cultivars grown at both low (0.01 mg L‐1) and high (5 mg L‐1) Zn as compared to 0.5 mg Zn L‐1”
t0“tomato cultivars”
Claim · model-written summary
High zinc significantly reduced chlorophyll content.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- high (5 mg L‐1) Zne0
- Outcome
- chlorophyll contentse0
- Direction
- reductionse0
- Comparator
- 0.5 mg Zn L‐1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were significant reductions in the dry matter and chlorophyll contents of all three cultivars grown at both low (0.01 mg L‐1) and high (5 mg L‐1) Zn as compared to 0.5 mg Zn L‐1”
t0“tomato cultivars”
Claim · model-written summary
The 0.5 mg Zn L‐1 treatment gave the best results for all parameters tested.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- 0.5 mg Zn L‐1e0
- Outcome
- best results for all parameters testede0
- Direction
- beste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The best results for all parameters tested were for the plants grown at 0.5 mg Zn L‐1”
t0“tomato cultivars”
Claim · model-written summary
Leaf phosphorus was excessive at the 0.01 mg Zn L‐1 treatment.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- leavese0
- Treatment
- 0.01 mg Zn L‐1e0
- Outcome
- concentration of phosphorus (P)e0
- Direction
- excess levele0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentration of phosphorus (P) was at an excess level in leaves of plants grown in 0.01 mg Zn L‐1”
t0“tomato cultivars”
Claim · model-written summary
Leaf phosphorus was deficient at the 5 mg Zn L‐1 treatment.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- leavese1
- Treatment
- 5 mg Zn L‐1e0
- Outcome
- concentration of phosphorus (P)e1
- Direction
- deficiente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it was deficient in the 5 mg Zn L‐1 treatment”
e1“The concentration of phosphorus (P) was at an excess level in leaves of plants grown in 0.01 mg Zn L‐1, while it was deficient in the 5 mg Zn L‐1 treatment”
t0“tomato cultivars”
Claim · model-written summary
Acid phosphatase activity was significantly higher in leaves and roots of phosphorus-deficient, high-zinc plants.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- leaves and rootse0
- Treatment
- high (5 mg L‐1) Zne0
- Gene
- Acid Phosphatase Enzyme [EC.3.1.3.2.]e0
- Outcome
- APE) activitye0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Acid Phosphatase Enzyme [EC.3.1.3.2.] (APE) activity was significantly higher in both the leaves and roots of P‐deficient plants, i.e., plants receiving high (5 mg L‐1) Zn”
t0“tomato cultivars”
Claim · model-written summary
Acid phosphatase activity was slightly higher in mature than developing leaves.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- mature leavese0
- Outcome
- Acid Phosphatase Enzyme activitye0
- Direction
- slightly highere0
- Comparator
- developing leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Acid Phosphatase Enzyme activity was slightly higher in the mature leaves than those in developing leaves”
t0“tomato cultivars”
Claim · model-written summary
Phosphorus concentration was higher in developing than mature leaves.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- developing leavese0
- Outcome
- P concentratione0
- Direction
- highere0
- Comparator
- mature leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mature leaves than those in developing leaves, where P concentration was higher”
t0“tomato cultivars”
Claim · model-written summary
Root phosphorus concentration increased with zinc in the solution.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- rootse0
- Treatment
- Zn in the nutrient solutione0
- Outcome
- Concentration of Pe0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Concentration of P and, in particular Zn, increased in the roots with increasing Zn in the nutrient solution”
t0“tomato cultivars”
Claim · model-written summary
Root zinc concentration increased with zinc in the solution.
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- rootse0
- Treatment
- Zn in the nutrient solutione0
- Outcome
- Zne0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Concentration of P and, in particular Zn, increased in the roots with increasing Zn in the nutrient solution”
t0“tomato cultivars”
The same questions in other papers
zinc atom · growth · Solanum lycopersicum (tomato)Results differ
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See all 18 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.