Abstract
We studied chelate effects on castor bean (Ricinus communis L.) growth. These effects included Cd and Pb accumulation in plant tissues and the chemical behavior of Cd and Pb in the plant rhizosphere and non-rhizosphere. Tests were conducted in a glasshouse using the rhizobag method. Two castor bean cultivars (Zibo-3 and Zibo-9) were grown in soil contaminated with 3.53mg/kg Cd and 274mg/kg Pb. The soil was treated with citric acid (CA), ethylenediamine disuccinic acid (EDDS) or ethylenediamine tetraacetic acid (EDTA) (5mmol/kg). EDDS-treated soil produced 28.8% and 59.4% greater biomass for Zibo-3 and Zibo-9 respectively. In contrast, CA and EDTA inhibited the growth of the two cultivars. Zibo-9 had greater tolerance than Zibo-3 to chelate toxicity. Based on Cd and Pb plant uptake, EDDS could substitute for EDTA for phytoremediation of Cd in soil. EDTA was the most effective of the three chelates for Pb phytoremediation but it is less suitable for field use due to toxicology environmental persistence. Acid extractable Cd and Pb in the rhizosphere or reducible Cd and Pb in the non-rhizosphere of soil were the main influences on Cd and Pb accumulation in castor bean.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-sa. 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 10
Claim · model-written summary
EDDS increased Zibo-3 biomass by 28.8%.
- Taxon
- Ricinus communis L.
Ricinus communist0 - Material
- Zibo-3e0
- Treatment
- EDDS-treated soile0
- Outcome
- biomasse0
- Direction
- greatere0
- Value
- 28.8%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“EDDS-treated soil produced 28.8% and 59.4% greater biomass for Zibo-3 and Zibo-9 respectively.”
t0“Ricinus communis L.”
Claim · model-written summary
EDDS increased Zibo-9 biomass by 59.4%.
- Taxon
- Ricinus communis L.Ricinus communist0
- Material
- Zibo-9e0
- Treatment
- EDDS-treated soile0
- Outcome
- biomasse0
- Direction
- greatere0
- Value
- 59.4%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“EDDS-treated soil produced 28.8% and 59.4% greater biomass for Zibo-3 and Zibo-9 respectively.”
t0“Ricinus communis L.”
Claim · model-written summary
Citric acid inhibited growth of both cultivars.
- Taxon
- Ricinus communis L.Ricinus communist0
- Treatment
- CAe0
- Outcome
- growthe0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In contrast, CA and EDTA inhibited the growth of the two cultivars.”
t0“Ricinus communis L.”
Claim · model-written summary
EDTA inhibited growth of both cultivars.
- Taxon
- Ricinus communis L.Ricinus communist0
- Treatment
- EDTAe0
- Outcome
- growthe0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In contrast, CA and EDTA inhibited the growth of the two cultivars.”
t0“Ricinus communis L.”
Claim · model-written summary
Zibo-9 tolerated chelate toxicity better than Zibo-3.
- Taxon
- Ricinus communis L.Ricinus communist0
- Material
- Zibo-9e0
- Outcome
- tolerancee0
- Direction
- greatere0
- Comparator
- Zibo-3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zibo-9 had greater tolerance than Zibo-3 to chelate toxicity.”
t0“Ricinus communis L.”
Claim · model-written summary
EDDS could replace EDTA for cadmium phytoremediation.
- Taxon
- Ricinus communis L.Ricinus communist0
- Treatment
- EDDSe0
- Outcome
- phytoremediation of Cd in soile0
- Comparator
- EDTAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“EDDS could substitute for EDTA for phytoremediation of Cd in soil.”
t0“Ricinus communis L.”
Claim · model-written summary
EDTA was the most effective chelate for lead phytoremediation.
- Taxon
- Ricinus communis L.Ricinus communist0
- Treatment
- EDTAe0
- Outcome
- Pb phytoremediatione0
- Direction
- most effectivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“EDTA was the most effective of the three chelates for Pb phytoremediation”
t0“Ricinus communis L.”
Claim · model-written summary
The authors judged EDTA less suitable for field use due to toxicology and persistence.
- Taxon
- Ricinus communis L.Ricinus communist0
- Outcome
- less suitable for field usee0
- Qualifier
- toxicology environmental persistencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it is less suitable for field use due to toxicology environmental persistence.”
t0“Ricinus communis L.”
Claim · model-written summary
Acid-extractable rhizosphere Cd and Pb influenced castor bean metal accumulation.
- Taxon
- castor beanRicinus communise0
- Outcome
- Cd and Pb accumulation in castor beane0
- Qualifier
- Acid extractable Cd and Pbe0
- Setting
- rhizospheree0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Acid extractable Cd and Pb in the rhizosphere or reducible Cd and Pb in the non-rhizosphere of soil were the main influences on Cd and Pb accumulation in castor bean.”
Claim · model-written summary
Reducible non-rhizosphere Cd and Pb influenced castor bean metal accumulation.
- Taxon
- castor beanRicinus communise0
- Outcome
- Cd and Pb accumulation in castor beane0
- Qualifier
- reducible Cd and Pbe0
- Setting
- non-rhizosphere of soile0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Acid extractable Cd and Pb in the rhizosphere or reducible Cd and Pb in the non-rhizosphere of soil were the main influences on Cd and Pb accumulation in castor bean.”
The same questions in other papers
citric acid · growth · Ricinus communis (castor bean)Results differ
2 in the opposite direction
- positive
- positive
ethylenediaminetetraacetic acid · growth · Ricinus communis (castor bean)Results agree
1 paper in the same direction as this paper
- negative
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.