Abstract
Phytoextraction은 식물을 이용하여 환경 정화하는 phytoremediation의 일부분으로서 금속으로 오염된 토양을 정화하는 것이다. 토양에 존재하는 금속의 추출을 용이 하기 위해서 현재 다양한 킬레이트가 사용되고 있다. Phytoextraction이 경제적이고 친환경적인 장점이 있지만 고농도로 오염된 지역에서는 적용이 어려운데 이는 식물이 이러한 지역에서 살아남기 어렵기 때문이며 이러한 문제점을 해결하는 것이 본 연구의 목적이다. 연구 대상의 금속으로서 구리를 선택하였고, 킬레이트는 아미노산인 시스테인과 히스티딘, 작은 크기의 유기산으로서 citric acid, malic acid, succinic acid, oxalic acid, 그리고 ethylenediamine (EDA)를 선택하였으며, EDTA는 비교대상으로 본 연구에 사용되었다. 다양한 농도의 구리를 포함하는 배지에 식물을 키우면서 여러 킬레이트가 식물의 뿌리 성장에 미치는 영향을 분석하였다. 시스테인, 히스티딘, 그리고 citric acid은 식물의 성장을 억제하는 구리의 영향을 완화시켜 주었지만 EDA는 오히려 더 강화시켜 주었다. 또한 킬레이트의 식물성장에 대한 영향은 구리의 식물 내 흡수를 억제 또는 촉진에 의한 것이다. 따라서 구리의 식물성장억제를 완화시켜주는 시스테인, 히스티딘, 그리고 citric acid는 고농도의 구리로 오염된 지역에 식물의 성장이 가능하도록 사용될 수 있으며 EDA는 기존의 phytoextraction에 유용하게 사용될 수 있을 것이다. 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 tetracyclic 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.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 11
Claim · model-written summary
Cys diminished copper inhibition of plant root growth.
- Taxon
- plantsViridiplantaee0
- Treatment
- Cyse0
- Outcome
- root growthe0
- Direction
- diminishede0
Not reportedComparator
Verbatim
e0“Cys, His, and citrate strongly diminished the inhibitory effect of Cu on root growth of plants”
Claim · model-written summary
His diminished copper inhibition of plant root growth.
- Taxon
- plantsViridiplantaee0
- Treatment
- Hise0
- Outcome
- root growthe0
- Direction
- diminishede0
Not reportedComparator
Verbatim
e0“Cys, His, and citrate strongly diminished the inhibitory effect of Cu on root growth of plants”
Claim · model-written summary
Citrate diminished copper inhibition of plant root growth.
- Taxon
- plantsViridiplantaee0
- Treatment
- citratee0
- Outcome
- root growthe0
- Direction
- diminishede0
Not reportedComparator
Verbatim
e0“Cys, His, and citrate strongly diminished the inhibitory effect of Cu on root growth of plants”
Claim · model-written summary
Oxalate had a weak effect on copper inhibition of root growth.
- Taxon
- PlantsViridiplantaet0
- Treatment
- oxalatee0
- Outcome
- effect of oxalatee0
- Direction
- weake0
Not reportedComparator
Verbatim
e0“The effect of oxalate was weak, and malate and succinate did not show significant effects”
t0“Plants”
Claim · model-written summary
Malate did not have a significant effect on copper inhibition of root growth.
- Taxon
- PlantsViridiplantaet0
- Treatment
- malatee0
- Outcome
- effectse0
- Direction
- did not showe0
- Qualifier
- significante0
Not reportedComparator
Verbatim
e0“The effect of oxalate was weak, and malate and succinate did not show significant effects”
t0“Plants”
Claim · model-written summary
Succinate did not have a significant effect on copper inhibition of root growth.
- Taxon
- PlantsViridiplantaet0
- Treatment
- succinatee0
- Outcome
- effectse0
- Direction
- did not showe0
- Qualifier
- significante0
Not reportedComparator
Verbatim
e0“The effect of oxalate was weak, and malate and succinate did not show significant effects”
t0“Plants”
Claim · model-written summary
EDTA diminished copper inhibition of plant root growth.
- Taxon
- PlantsViridiplantaet0
- Treatment
- EDTAe0
- Outcome
- inhibitory effects of Cu on root growthe0
- Direction
- diminishede0
Not reportedComparator
Verbatim
e0“EDTA diminished and EDA promoted the inhibitory effects of Cu on root growth”
t0“Plants”
Claim · model-written summary
EDA promoted copper inhibition of plant root growth.
- Taxon
- PlantsViridiplantaet0
- Treatment
- EDAe0
- Outcome
- inhibitory effects of Cu on root growthe0
- Direction
- promotede0
Not reportedComparator
Verbatim
e0“EDTA diminished and EDA promoted the inhibitory effects of Cu on root growth”
t0“Plants”
Claim · model-written summary
Chelating agent effects correlated with copper uptake into roots.
- Taxon
- PlantsViridiplantaet0
- Treatment
- chelating agentse0
- Outcome
- Cu uptake into the rootse0
Not reportedDirection
Verbatim
e0“These effects of chelating agents are correlated with Cu uptake into the roots”
t0“Plants”
Claim · model-written summary
Cys, His, and citrate were recommended as candidates for highly copper-contaminated areas.
- Taxon
- PlantsViridiplantaet0
- Outcome
- good candidates for highly Cu-contaminated arease0
Verbatim
e0“Cys, His, and citrate are good candidates for highly Cu-contaminated areas”
t0“Plants”
Claim · model-written summary
EDA was suggested for copper phytoextraction.
- Taxon
- PlantsViridiplantaet0
- Outcome
- useful in phytoextraction for Cue0
Verbatim
e0“EDA can be useful in phytoextraction for Cu”
t0“Plants”
The same questions in other papers
ethylenediamine · growth · Viridiplantae (plants)Positive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
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
2 papers more in this group
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.