Abstract
Soil salinity and plant genotype may affect bioavailability of Cd and Zn to wheat. The aim of this study was to investigate the relationship between concentrations of Zn and Cd in saline soil solutions and in different wheat genotypes. A greenhouse experiment with four bread wheat genotypes ( Triticum aestivum L. cv. Rushan, Kavir, Cross, and Falat), and a durum wheat ( Triticum durum L. cv. Durum), at four salinity levels of irrigation water (0, 60, 120, and 180 m M NaCl) in triplicate was conducted. After 45 d of growth, the shoots were harvested, and Zn and Cd concentrations were determined in the shoots. Speciation of Cd and Zn in saturation paste extract was modeled using MINTEQA2. A significant ( P < 0.05) correlation was observed between model results and Cd and Zn species measured using Amberlite resin. Cadmium and Zn speciation in MINTEQA2‐calculated soil solution was affected by salinity but not by wheat genotype. The major Cd species present in MINTEQA2‐calculated soil solution were free Cd 2+ , CdCl + , and CdSO 4 0 , that increased with increasing salinity. Free Zn 2+ was the dominant Zn‐species for all salinities and decreased with increasing salinity. Increasing salinity resulted in significant increases and decreases in shoot Cd and Zn concentrations, respectively, of the Zn‐inefficient genotypes. Cadmium concentrations in shoots of Durum and Kavir genotypes were best predicted by CdCl + concentrations in solution. In contrast, free Zn 2+ ion concentrations in MINTEQA2 calculated soil solution were best related to shoot Zn concentrations in Zn‐efficient genotypes. Under saline conditions, Zn and Cd speciation effects on bioavailability thus depend on both plant genotype and the metal of interest.
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Claims 9
Claim · model-written summary
Increasing salinity significantly increased shoot Cd in Zn-inefficient wheat genotypes.
- Taxon
- Wheat
Triticum aestivumt0 - Material
- Zn‐inefficient genotypese1
- Treatment
- Increasing salinitye1
- Outcome
- shoot Cde1
- Direction
- increasese1
- Setting
- A greenhouse experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A greenhouse experiment with four bread wheat genotypes”
e1“Increasing salinity resulted in significant increases and decreases in shoot Cd and Zn concentrations, respectively, of the Zn‐inefficient genotypes”
t0“Concentrations in Wheat”
Claim · model-written summary
Increasing salinity significantly decreased Zn concentrations in Zn-inefficient wheat genotypes.
- Taxon
- WheatTriticum aestivumt0
- Material
- Zn‐inefficient genotypese1
- Treatment
- Increasing salinitye1
- Outcome
- Zn concentrationse1
- Direction
- decreasese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Increasing salinity resulted in significant increases and decreases in shoot Cd and Zn concentrations, respectively, of the Zn‐inefficient genotypes”
t0“Concentrations in Wheat”
Claim · model-written summary
Shoot Cd concentrations in Durum and Kavir genotypes were best predicted by CdCl + concentrations in solution.
- Taxon
- WheatTriticum aestivumt0
- Material
- Durum and Kavir genotypese2
- Compound
- CdCl +e2
- Outcome
- Cadmium concentrations in shootse2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Cadmium concentrations in shoots of Durum and Kavir genotypes were best predicted by CdCl + concentrations in solution”
t0“Concentrations in Wheat”
Claim · model-written summary
Free Zn2+ ion concentrations in solution were best related to shoot Zn in Zn-efficient wheat genotypes.
- Taxon
- WheatTriticum aestivumt0
- Material
- Zn‐efficient genotypese3
- Compound
- free Zn 2+ ione3
- Outcome
- Zn concentrationse3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“free Zn 2+ ion concentrations in MINTEQA2 calculated soil solution were best related to shoot Zn concentrations in Zn‐efficient genotypes”
t0“Concentrations in Wheat”
Claim · model-written summary
Major Cd species in soil solution increased with increasing salinity.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- increasing salinitye4
- Outcome
- Cd speciese4
- Direction
- increasede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The major Cd species present in MINTEQA2‐calculated soil solution were free Cd 2+ , CdCl + , and CdSO 4 0 , that increased with increasing salinity”
t0“Concentrations in Wheat”
Claim · model-written summary
Free Zn2+ was the dominant Zn species at all salinities and decreased with increasing salinity.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- increasing salinitye5
- Outcome
- Free Zn 2+e5
- Direction
- decreasede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Free Zn 2+ was the dominant Zn‐species for all salinities and decreased with increasing salinity”
t0“Concentrations in Wheat”
Claim · model-written summary
Cd and Zn speciation in soil solution was affected by salinity but not by wheat genotype.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- speciatione6
- Qualifier
- affected by salinity but not by wheat genotypee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Cadmium and Zn speciation in MINTEQA2‐calculated soil solution was affected by salinity but not by wheat genotype”
t0“Concentrations in Wheat”
Claim · model-written summary
Model-calculated Cd and Zn species correlated significantly with species measured by Amberlite resin.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- correlatione7
- Value
- P < 0.05e7
- Comparator
- Cd and Zn species measured using Amberlite resine7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“A significant ( P < 0.05) correlation was observed between model results and Cd and Zn species measured using Amberlite resin”
t0“Concentrations in Wheat”
Claim · model-written summary
Zn and Cd speciation effects on bioavailability under saline conditions depend on plant genotype and the metal.
- Taxon
- WheatTriticum aestivumt0
- Material
- plant genotypee1
- Treatment
- Under saline conditionse1
- Outcome
- bioavailabilitye1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Under saline conditions, Zn and Cd speciation effects on bioavailability thus depend on both plant genotype and the metal of interest”
t0“Concentrations in Wheat”
The same questions in other papers
salinity · nutrient: content · Triticum aestivum (wheat)Positive and negative results
65 papers in the same direction as this paper · 19 in the opposite direction
- negative
- positive
- positive
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See all 85 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.