Abstract
Zinc (Zn) is an essential element required for growth and development of plants. However, Zn can be toxic to plants when it presents excessive amount. Phytoextraction is an economic and environment-friendly technique using plants to clean-up metal-contaminated soils. However, the technique cannot be applied in highly metal-contaminated areas because plants will not normally grow in such conditions. Therefore, this research focuses on identifying chelating agents which are biodegradable and applicable to highly metalcontaminated areas. Zn as a target metal and cysteine (Cys), histidine (His), malate, citrate oxalate, succinate, and ethylenediamine (EDA) as biodegradable chelating agents were selected. Plants were grown on agar media containing various chelating agents with Zn to analyze the effect on plant growth. Malate and His slightly increased the inhibitory effect of Zn on root growth of plants, whereas Cys, citrate, oxalate, and succinate did not show significant effects. However, EDA strongly diminished the inhibitory effect of Zn on root growth. The effect of EDA is correlated with decreased Zn uptake into the plants. In conclusion, as biodegradable chelating agents, EDA is a good candidate for growth of plants in highly Zn-contaminated areas.
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Claims 9
Claim · model-written summary
Malate slightly increased zinc inhibition of plant root growth.
- Taxon
- plantsViridiplantaee0
- Treatment
- Malatee0
- Outcome
- inhibitory effect of Zn on root growthe0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Malate and His slightly increased the inhibitory effect of Zn on root growth of plants”
Claim · model-written summary
Histidine slightly increased zinc inhibition of plant root growth.
- Taxon
- plantsViridiplantaee0
- Treatment
- Hise0
- Outcome
- inhibitory effect of Zn on root growthe0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Malate and His slightly increased the inhibitory effect of Zn on root growth of plants”
Claim · model-written summary
Cysteine had no significant effect on zinc inhibition of root growth.
- Taxon
- plantsViridiplantaee1
- Treatment
- Cyse0
- Outcome
- effectse0
Not reportedComparatorDirection
Verbatim
e0“Cys, citrate, oxalate, and succinate did not show significant effects”
e1“Malate and His slightly increased the inhibitory effect of Zn on root growth of plants”
Claim · model-written summary
Citrate had no significant effect on zinc inhibition of root growth.
- Taxon
- plantsViridiplantaee1
- Treatment
- citratee0
- Outcome
- effectse0
Not reportedComparatorDirection
Verbatim
e0“Cys, citrate, oxalate, and succinate did not show significant effects”
e1“Malate and His slightly increased the inhibitory effect of Zn on root growth of plants”
Claim · model-written summary
Oxalate had no significant effect on zinc inhibition of root growth.
- Taxon
- plantsViridiplantaee1
- Treatment
- oxalatee0
- Outcome
- effectse0
Not reportedComparatorDirection
Verbatim
e0“Cys, citrate, oxalate, and succinate did not show significant effects”
e1“Malate and His slightly increased the inhibitory effect of Zn on root growth of plants”
Claim · model-written summary
Succinate had no significant effect on zinc inhibition of root growth.
- Taxon
- plantsViridiplantaee1
- Treatment
- succinatee0
- Outcome
- effectse0
Not reportedComparatorDirection
Verbatim
e0“Cys, citrate, oxalate, and succinate did not show significant effects”
e1“Malate and His slightly increased the inhibitory effect of Zn on root growth of plants”
Claim · model-written summary
EDA strongly reduced zinc inhibition of plant root growth.
- Taxon
- plantsViridiplantaee1
- Treatment
- EDAe0
- Outcome
- inhibitory effect of Zn on root growthe0
- Direction
- diminishede0
Not reportedComparator
Verbatim
e0“EDA strongly diminished the inhibitory effect of Zn on root growth”
e1“root growth of plants”
Claim · model-written summary
EDA effect correlated with lower zinc uptake into plants.
- Taxon
- plantsViridiplantaee0
- Treatment
- EDAe0
- Outcome
- Zn uptake into the plantse0
- Direction
- decreasede0
Verbatim
e0“The effect of EDA is correlated with decreased Zn uptake into the plants”
Claim · model-written summary
The authors recommend EDA for plant growth in highly zinc contaminated areas.
- Taxon
- plantsViridiplantaee0
- Outcome
- good candidate for growth of plants in highly Zn-contaminated arease0
Verbatim
e0“EDA is a good candidate for growth of plants in highly Zn-contaminated areas”
The same questions in other papers
ethylenediamine · growth · Viridiplantae (plants)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
1 paper more in this group
See all 5 papers →malate · growth · Viridiplantae (plants)Results agree
1 paper in the same direction as this paper
- no effect
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.