Abstract
Abstract This study investigated the effects of lead (Pb) form (free or complexed) and type and concentration of chelants [citric acid and ethylenediaminetetraacetic acid (EDTA)] on the growth and ability of wheat to accumulate Pb. Wheat variety Auqab-2000 was exposed to four levels of EDTA and citric acid (0, 500, 1000, and 1500 μM) in the presence of Pb (1000 μM). Both the free Pb (1000 μM) and high concentration (1500 μM) of EDTA and citric acid reduced the plant biomass. Without the addition of chelants, only a little Pb was accumulated by wheat shoots. This demonstrates that organic acids used in enhanced phytoextraction applications do not merely serve to increase metal mobility and plant availability but also can help to increase translocation rates of metals absorbed by the plant roots. Greater translocation of Pb from roots to shoots was observed with EDTA than that with citric acid. Keywords: EDTAorganic acidphytoremediation
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Claims 5
Claim · model-written summary
Free Pb reduced wheat biomass.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- free Pb (1000 μM)e0
- Outcome
- plant biomasse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both the free Pb (1000 μM) and high concentration (1500 μM) of EDTA and citric acid reduced the plant biomass.”
t0“Wheat”
Claim · model-written summary
High EDTA concentration reduced wheat biomass.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- 1500 μM) of EDTAe0
- Outcome
- plant biomasse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both the free Pb (1000 μM) and high concentration (1500 μM) of EDTA and citric acid reduced the plant biomass.”
t0“Wheat”
Claim · model-written summary
High citric acid concentration reduced wheat biomass.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- 1500 μM) of EDTA and citric acide0
- Outcome
- plant biomasse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both the free Pb (1000 μM) and high concentration (1500 μM) of EDTA and citric acid reduced the plant biomass.”
t0“Wheat”
Claim · model-written summary
Without chelants, wheat shoots accumulated little Pb.
- Taxon
- wheatTriticum aestivume0
- Outcome
- Pb was accumulated by wheat shootse0
- Qualifier
- only a littlee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Without the addition of chelants, only a little Pb was accumulated by wheat shoots.”
Claim · model-written summary
EDTA yielded greater Pb translocation from roots to shoots than citric acid.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- EDTAe0
- Outcome
- translocation of Pb from roots to shootse0
- Direction
- Greatere0
- Comparator
- citric acide0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Greater translocation of Pb from roots to shoots was observed with EDTA than that with citric acid.”
t0“Wheat”
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See all 7 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.