Abstract
Phytoextraction is a method of phytoremediation using plants to clean up metal-contaminated soils. Recently, various chelating agents were used in this method to increase the bioavailability of metals in soils. Even though phytoextraction is an economic and environmentally friendly method, this cannot be applied in highly metal-contaminated areas because plants will not normally grow in such conditions. This research focuses on identifying chelating agents which are biodegradable and applicable to highly metal-contaminated areas. Copper (Cu) as a target metal and cysteine (Cys), histidine (His), citrate, malate, oxalate, succinate, and ethylenediamine (EDA) as biodegradable chelating agents were selected. Ethylenediamine tetraacetic acid (EDTA) was used as a comparative standard. Plants were grown on agar media containing various chelating agents with Cu to analyze the effect on root growth. Cys, His, and citrate strongly diminished the inhibitory effect of Cu on root growth of plants. The effect of oxalate was weak, and malate and succinate did not show significant effects. EDTA diminished and EDA promoted the inhibitory effects of Cu on root growth. These effects of chelating agents are correlated with Cu uptake into the roots. In conclusion, as biodegradable chelating agents, Cys, His, and citrate are good candidates for highly Cu-contaminated areas, while EDA can be useful in phytoextraction for Cu.
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Claims 8
Claim · model-written summary
Cys, His, and citrate strongly diminished the inhibitory effect of Cu on plant root growth.
- Taxon
- PlantsViridiplantaee5
- Treatment
- Cys, His, and citratee2
- Outcome
- inhibitory effect of Cu on root growthe2
- Direction
- diminishede2
Not reportedComparator
Verbatim
e5“Plants were grown on agar media containing various chelating agents with Cu to analyze the effect on root growth”
e2“Cys, His, and citrate strongly diminished the inhibitory effect of Cu on root growth of plants”
Claim · model-written summary
EDTA diminished the inhibitory effects of Cu on root growth.
- Taxon
- PlantsViridiplantaee5
- Treatment
- EDTAe3
- Outcome
- inhibitory effects of Cu on root growthe3
- Direction
- diminishede3
Not reportedComparator
Verbatim
e5“Plants were grown on agar media containing various chelating agents with Cu to analyze the effect on root growth”
e3“EDTA diminished and EDA promoted the inhibitory effects of Cu on root growth”
Claim · model-written summary
EDA promoted the inhibitory effects of Cu on root growth.
- Taxon
- PlantsViridiplantaee5
- Treatment
- EDAe3
- Outcome
- inhibitory effects of Cu on root growthe3
- Direction
- promotede3
Not reportedComparator
Verbatim
e5“Plants were grown on agar media containing various chelating agents with Cu to analyze the effect on root growth”
e3“EDTA diminished and EDA promoted the inhibitory effects of Cu on root growth”
Claim · model-written summary
Oxalate had a weak effect on the Cu inhibition of root growth.
- Taxon
- PlantsViridiplantaee5
- Treatment
- oxalatee4
- Outcome
- effecte4
- Direction
- weake4
Not reportedComparator
Verbatim
e5“Plants were grown on agar media containing various chelating agents with Cu to analyze the effect on root growth”
e4“The effect of oxalate was weak, and malate and succinate did not show significant effects”
Claim · model-written summary
Malate and succinate did not show significant effects on Cu inhibition of root growth.
- Taxon
- PlantsViridiplantaee5
- Treatment
- malate and succinatee4
- Outcome
- effectse4
- Direction
- did not show significant effectse4
Not reportedComparator
Verbatim
e5“Plants were grown on agar media containing various chelating agents with Cu to analyze the effect on root growth”
e4“The effect of oxalate was weak, and malate and succinate did not show significant effects”
Claim · model-written summary
The effects of chelating agents on Cu inhibition are correlated with Cu uptake into the roots.
- Taxon
- PlantsViridiplantaee5
- Treatment
- chelating agentse6
- Outcome
- Cu uptake into the rootse6
Not reportedDirection
Verbatim
e5“Plants were grown on agar media containing various chelating agents with Cu to analyze the effect on root growth”
e6“These effects of chelating agents are correlated with Cu uptake into the roots”
Claim · model-written summary
Cys, His, and citrate are good candidates as biodegradable chelating agents for highly Cu-contaminated areas.
- Taxon
- PlantsViridiplantaee5
- Treatment
- Cys, His, and citratee7
- Outcome
- good candidates for highly Cu-contaminated arease7
Verbatim
e5“Plants were grown on agar media containing various chelating agents with Cu to analyze the effect on root growth”
e7“as biodegradable chelating agents, Cys, His, and citrate are good candidates for highly Cu-contaminated areas, while EDA can be useful in phytoextraction for Cu”
Claim · model-written summary
EDA can be useful in phytoextraction for Cu.
- Taxon
- PlantsViridiplantaee5
- Treatment
- EDAe7
- Outcome
- can be useful in phytoextraction for Cue7
Verbatim
e5“Plants were grown on agar media containing various chelating agents with Cu to analyze the effect on root growth”
e7“as biodegradable chelating agents, Cys, His, and citrate are good candidates for highly Cu-contaminated areas, while EDA can be useful in phytoextraction for Cu”
The same questions in other papers
ethylenediamine · growth · Viridiplantae (plants)Positive and negative results
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- positive
- positive
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1 paper more in this group
See all 5 papers →ethylenediaminetetraacetic acid · growth · Viridiplantae (plants)Positive and negative results
4 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
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See all 6 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.