Abstract
The success of phytoremediation hinges on the selection of plant species and soil amendments that maximize contaminant removal. Indian mustard ( Brassica juncea ) has been shown to be effective in phytoextracting Zn, particularly after the synthetic chelate EDTA has been applied to the soil. However, the effectiveness of grass species for phytoremediation has not been addressed in great detail. A hydroponic screening of 22 grass species indicated that oat ( Avena sativa ) and barley ( Hordeum vulgare ) tolerated the high Cu, Cd, and Zn concentrations present in the solution and also accumulated elevated concentrations of these metals in the plant shoots. A hydroponic experiment comparing these two grasses to Indian mustard indicated that, although shoot Zn concentrations were greater for Indian mustard, the grasses were considerably more tolerant. A pot experiment conducted using a Zn-contaminated soil showed that the addition of EDTA to the soil significantly increased Zn accumulation by B. juncea but not oat or barley. Nevertheless, barley accumulated >2 mg of Zn plant - 1, 2−4 times more Zn than what was observed in Indian mustard in the presence of EDTA. The results of this experiment suggest that barley has a phytoremediation potential equal to, if not greater than, that for B. juncea .
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
Oat tolerated high Cu, Cd and Zn in hydroponic screening.
- Taxon
- oat
Avena sativae0 - Outcome
- tolerated the high Cu, Cd, and Zn concentrationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“oat ( Avena sativa ) and barley ( Hordeum vulgare ) tolerated the high Cu, Cd, and Zn concentrations present in the solution”
Claim · model-written summary
Barley tolerated high Cu, Cd and Zn in hydroponic screening.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaree0 - Outcome
- tolerated the high Cu, Cd, and Zn concentrationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“oat ( Avena sativa ) and barley ( Hordeum vulgare ) tolerated the high Cu, Cd, and Zn concentrations present in the solution”
Claim · model-written summary
Oat accumulated elevated metal concentrations in shoots.
- Outcome
- elevated concentrations of these metals in the plant shootse0
Not reportedTaxon
Verbatim
e0“also accumulated elevated concentrations of these metals in the plant shoots”
Claim · model-written summary
Barley accumulated elevated metal concentrations in shoots.
- Outcome
- elevated concentrations of these metals in the plant shootse0
Not reportedTaxon
Verbatim
e0“also accumulated elevated concentrations of these metals in the plant shoots”
Claim · model-written summary
Indian mustard had greater shoot Zn concentration than the grasses.
- Taxon
- Indian mustard
Brassica junceae0 - Outcome
- shoot Zn concentrationse0
- Direction
- greatere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“shoot Zn concentrations were greater for Indian mustard”
Claim · model-written summary
The grasses were more tolerant than Indian mustard.
Verbatim
e0“the grasses were considerably more tolerant”
Claim · model-written summary
EDTA significantly increased Zn accumulation by B. juncea.
- Taxon
- B. junceaBrassica junceae0
- Treatment
- addition of EDTA to the soile0
- Outcome
- Zn accumulatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the addition of EDTA to the soil significantly increased Zn accumulation by B. juncea but not oat or barley”
Claim · model-written summary
EDTA did not increase Zn accumulation by oat.
- Taxon
- oatAvena sativae0
- Treatment
- addition of EDTA to the soile0
- Outcome
- Zn accumulatione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the addition of EDTA to the soil significantly increased Zn accumulation by B. juncea but not oat or barley”
Claim · model-written summary
EDTA did not increase Zn accumulation by barley.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- addition of EDTA to the soile0
- Outcome
- Zn accumulatione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the addition of EDTA to the soil significantly increased Zn accumulation by B. juncea but not oat or barley”
Claim · model-written summary
Barley accumulated more than 2 mg Zn per plant, two to four times Indian mustard with EDTA.
- Taxon
- barleyHordeum vulgaree0
- Outcome
- Zne0
- Direction
- moree0
- Value
- >2 mg of Zn plant - 1e0
- Qualifier
- 2−4 timese0
- Comparator
- Indian mustarde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley accumulated >2 mg of Zn plant - 1, 2−4 times more Zn than what was observed in Indian mustard in the presence of EDTA”
Claim · model-written summary
Barley may have equal or greater phytoremediation potential than B. juncea.
- Taxon
- barleyHordeum vulgaree0
- Outcome
- phytoremediation potentiale0
- Direction
- greater thane0
- Comparator
- B. junceae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley has a phytoremediation potential equal to, if not greater than, that for B. juncea”
The same questions in other papers
ethylenediaminetetraacetic acid · nutrient: content · Avena sativa (oats)Positive and negative results
1 in the opposite direction
- positive
ethylenediaminetetraacetic acid · nutrient: content · Hordeum vulgare (barley)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
ethylenediaminetetraacetic acid · nutrient: content · Brassica juncea (Indian mustard)Results agree
25 papers in the same direction as this paper
- positive
- positive
- positive
22 papers more in this group
See all 26 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.