Abstract
Two barley cultivars (‘Sahara’ = Zn-efficient and ‘Clipper’ = Zn-inefficient) were grown at different soil Zn fertilization (0, 0.2, 0.8, 1.6 and 3.2 mg Zn kg−1 soil). Root exudates were collected 16 and 28 days after sowing. At Zn = 0, shoot dry matter was decreased in both genotypes, but more distinctly in ‘Clipper’. At 0.2 mg Zn kg−1, the ‘Sahara’ shoot concentrations of Zn was 130% higher and shoot Zn content 44% greater compared with ‘Clipper’. Low-molecular-weight organic acid anions (=carboxylates) (malate, maleate, fumarate and cis-aconitate) and amino acids (alanine, valine, proline, aspartic acid and glutamic acid) were detected in root exudates, with the highest concentration at Zn = 0.2 mg kg−1 soil. Higher concentrations of organic acid anions as well as amino acids were noted in the rhizosphere of ‘Sahara’ than ‘Clipper’. The genotypic differences in Zn acquisition from soil may be linked to differential carboxylate and amino acid composition of root exudates.
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Claims 8
Claim · model-written summary
Zero zinc reduced shoot dry matter in both cultivars, more strongly in Clipper.
- Taxon
- BARLEY
.jpg?width=60)
Hordeum vulgaret0 - Material
- ‘Clipper’e0
- Treatment
- Zn = 0e0
- Outcome
- shoot dry mattere0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“At Zn = 0, shoot dry matter was decreased in both genotypes, but more distinctly in ‘Clipper’.”
t0“BARLEY GENOTYPES”
Claim · model-written summary
At 0.2 mg Zn kg−1, Sahara shoot Zn concentration was 130% higher than Clipper.
- Taxon
- BARLEYHordeum vulgaret0
- Material
- ‘Sahara’e0
- Treatment
- 0.2 mg Zn kg−1e0
- Outcome
- shoot concentrations of Zne0
- Direction
- highere0
- Value
- 130%e0
- Comparator
- ‘Clipper’e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 0.2 mg Zn kg−1, the ‘Sahara’ shoot concentrations of Zn was 130% higher and shoot Zn content 44% greater compared with ‘Clipper’.”
t0“BARLEY GENOTYPES”
Claim · model-written summary
At 0.2 mg Zn kg−1, Sahara shoot Zn content was 44% greater than Clipper.
- Taxon
- BARLEYHordeum vulgaret0
- Material
- ‘Sahara’e0
- Treatment
- 0.2 mg Zn kg−1e0
- Outcome
- shoot Zn contente0
- Direction
- greatere0
- Value
- 44%e0
- Comparator
- ‘Clipper’e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 0.2 mg Zn kg−1, the ‘Sahara’ shoot concentrations of Zn was 130% higher and shoot Zn content 44% greater compared with ‘Clipper’.”
t0“BARLEY GENOTYPES”
Claim · model-written summary
Carboxylates were detected in barley root exudates.
- Taxon
- BARLEYHordeum vulgaret0
- Organ / stage
- root exudatese0
- Outcome
- malate, maleate, fumarate and cis-aconitatee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low-molecular-weight organic acid anions (=carboxylates) (malate, maleate, fumarate and cis-aconitate) and amino acids (alanine, valine, proline, aspartic acid and glutamic acid) were detected in root exudates, with the highest concentration at Zn = 0.2 mg kg−1 soil.”
t0“BARLEY GENOTYPES”
Claim · model-written summary
Amino acids were detected in barley root exudates.
- Taxon
- BARLEYHordeum vulgaret0
- Organ / stage
- root exudatese0
- Outcome
- alanine, valine, proline, aspartic acid and glutamic acide0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“amino acids (alanine, valine, proline, aspartic acid and glutamic acid) were detected in root exudates”
t0“BARLEY GENOTYPES”
Claim · model-written summary
Root exudate concentration was highest at 0.2 mg Zn kg−1 soil.
- Taxon
- BARLEYHordeum vulgaret0
- Treatment
- Zn = 0.2 mg kg−1 soile0
- Outcome
- concentratione0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with the highest concentration at Zn = 0.2 mg kg−1 soil.”
t0“BARLEY GENOTYPES”
Claim · model-written summary
Sahara had higher organic acid anion and amino acid concentrations in its rhizosphere than Clipper.
- Taxon
- BARLEYHordeum vulgaret0
- Material
- ‘Sahara’e0
- Organ / stage
- rhizospheree0
- Outcome
- concentrations of organic acid anions as well as amino acidse0
- Direction
- Highere0
- Comparator
- ‘Clipper’e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher concentrations of organic acid anions as well as amino acids were noted in the rhizosphere of ‘Sahara’ than ‘Clipper’.”
t0“BARLEY GENOTYPES”
Claim · model-written summary
Genotypic differences in zinc acquisition may be linked to carboxylate and amino acid composition of root exudates.
- Taxon
- BARLEYHordeum vulgaret0
- Organ / stage
- root exudatese0
- Outcome
- Zn acquisition from soile0
- Qualifier
- differential carboxylate and amino acid compositione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The genotypic differences in Zn acquisition from soil may be linked to differential carboxylate and amino acid composition of root exudates.”
t0“BARLEY GENOTYPES”
The same questions in other papers
zinc atom · growth · Hordeum vulgare (barley)Results differ
24 papers in the same direction as this paper · 18 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- negative
- negative
- negative
39 papers more in this group
See all 43 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.