Abstract
Abstract A solution culture was conducted to investigate the effects of copper (Cu) and zinc (Zn) toxicity on growth of mung bean (Phaseolus aures Roxb. cv VC‐3762) and accumulation of polyamine. Eight‐day‐old seedlings were grown in diluted nutrient solution with different concentrations of Cu and Zn for 6 days. Results showed that elongation of epicotyl and fresh weight of plants were decreased by 10 μM Cu and 100 μM Zn significantly compared to control (0.03 μMCu and 0.1 μMZn). Accumulation of polyamine, especially putrescine (Put) was found in the epicotyl of mung bean seedlings. Addition of 5 mM calcium (Ca) into nutrient solution improved the growth of 10 μM Cu‐treated seedling, and decreased the concentration of Put and increased concentrations of spermine and spermidine in epicotyl of plants. Moreover, supplying Put did not increase tolerance of plant to Cu or Zn. It was suggested that Put accumulation resulting from toxicity of Cu and Zn might merely be a symptom of stress injury.
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Claims 8
Claim · model-written summary
Copper at 10 μM significantly decreased epicotyl elongation and fresh weight of mung bean seedlings compared with control.
- Taxon
- Mung bean
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Vigna radiatat0 - Organ / stage
- epicotyle1
- Treatment
- 10 μM Cue1
- Outcome
- elongation of epicotyl and fresh weight of plantse1
- Direction
- decreasede1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“Toxicity of copper and zinc in seedlings of Mung bean”
e1“elongation of epicotyl and fresh weight of plants were decreased by 10 μM Cu and 100 μM Zn significantly compared to control”
Claim · model-written summary
Zinc at 100 μM significantly decreased epicotyl elongation and fresh weight of mung bean seedlings compared with control.
- Taxon
- Mung beanVigna radiatat0
- Organ / stage
- epicotyle1
- Treatment
- 100 μM Zne1
- Outcome
- elongation of epicotyl and fresh weight of plantse1
- Direction
- decreasede1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Toxicity of copper and zinc in seedlings of Mung bean”
e1“elongation of epicotyl and fresh weight of plants were decreased by 10 μM Cu and 100 μM Zn significantly compared to control”
Claim · model-written summary
Polyamine, especially putrescine, accumulated in the epicotyl of mung bean seedlings.
- Taxon
- mung beanVigna radiatae2
- Organ / stage
- epicotyle2
- Outcome
- accumulation of polyamine, especially putrescinee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Toxicity of copper and zinc in seedlings of Mung bean”
e2“Accumulation of polyamine, especially putrescine (Put) was found in the epicotyl of mung bean seedlings”
Claim · model-written summary
Addition of 5 mM calcium improved the growth of copper-treated mung bean seedlings.
- Taxon
- mung beanVigna radiatae2
- Treatment
- 5 mM calcium (Ca)e3
- Outcome
- growthe3
- Direction
- improvede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Accumulation of polyamine, especially putrescine (Put) was found in the epicotyl of mung bean seedlings”
e3“Addition of 5 mM calcium (Ca) into nutrient solution improved the growth”
Claim · model-written summary
Calcium addition decreased putrescine concentration in the epicotyl of mung bean seedlings.
- Taxon
- mung beanVigna radiatae2
- Organ / stage
- epicotyle4
- Treatment
- 5 mM calcium (Ca)e3
- Outcome
- concentration of Pute4
- Direction
- decreasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Accumulation of polyamine, especially putrescine (Put) was found in the epicotyl of mung bean seedlings”
e3“Addition of 5 mM calcium (Ca) into nutrient solution improved the growth”
e4“decreased the concentration of Put and increased concentrations of spermine and spermidine in epicotyl of plants”
Claim · model-written summary
Calcium addition increased spermine and spermidine concentrations in the epicotyl of mung bean seedlings.
- Taxon
- mung beanVigna radiatae2
- Organ / stage
- epicotyle4
- Treatment
- 5 mM calcium (Ca)e3
- Outcome
- concentrations of spermine and spermidinee4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Accumulation of polyamine, especially putrescine (Put) was found in the epicotyl of mung bean seedlings”
e3“Addition of 5 mM calcium (Ca) into nutrient solution improved the growth”
e4“decreased the concentration of Put and increased concentrations of spermine and spermidine in epicotyl of plants”
Claim · model-written summary
Supplying putrescine did not increase tolerance of mung bean to Cu or Zn.
- Taxon
- mung beanVigna radiatae2
- Treatment
- supplying Pute5
- Outcome
- tolerance of plant to Cu or Zne5
- Direction
- did not increasee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Accumulation of polyamine, especially putrescine (Put) was found in the epicotyl of mung bean seedlings”
e5“supplying Put did not increase tolerance of plant to Cu or Zn”
Claim · model-written summary
Putrescine accumulation under Cu and Zn toxicity might merely be a symptom of stress injury.
- Taxon
- mung beanVigna radiatae2
- Outcome
- Put accumulatione6
- Qualifier
- might merely be a symptom of stress injurye6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Accumulation of polyamine, especially putrescine (Put) was found in the epicotyl of mung bean seedlings”
e6“It was suggested that Put accumulation resulting from toxicity of Cu and Zn might merely be a symptom of stress injury”
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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.