Abstract
To investigate effects of Zn on Cd uptake by spring wheat (Triticum aestivum, L.) in solution culture, long-time hydroponic experiment (1 month) (Experiment 1) and short-time Cd isotope (109Cd) tracing experiment (24 h) (Experiment 2) were conducted. In Experiment 1, spring wheat (cv. Brookton) was grown in nutrient solution at uniform cadmium concentration of 20 μmol/L and 10 zinc concentrations (0, 1, 5, 10, 20, 100, 200, 500, 1000, 2000 μmol/L). In Experiment 2, spring wheat seedlings, pre-cultivated in complete nutrient solution, were treated with109Cd of uniform activity and the same series of Zn concentrations as those in Experiment 1 for 24 h. Cd concentrations in shoots and roots in Experiment 1 increased marginally but not consistently with Zn increasing at Zn rates of 1≈200 μmol/L, and then decreased significantly at high rates (>200 μmol/L). In Experiment 2, the response of109Cd activities in shoots and roots to increasing Zn was greatly similar to the response of Cd concentrations to Zn increasing in Experiment 1. The results of the two experiments indicated that the short-time and long-time exposure of spring wheat to Zn had similar effects on Cd accumulation.
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Claims 3
Claim · model-written summary
At 1–200 μmol/L zinc, shoot and root cadmium concentrations increased marginally and inconsistently.
- Taxon
- spring wheat
Triticum aestivume1 - Treatment
- Zne0
- Outcome
- Cd concentrations in shoots and rootse0
- Direction
- increasede0
- Qualifier
- 1≈200 μmol/Le0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cd concentrations in shoots and roots in Experiment 1 increased marginally but not consistently with Zn increasing at Zn rates of 1≈200 μmol/L”
e1“spring wheat (cv. Brookton)”
Claim · model-written summary
At zinc rates above 200 μmol/L, shoot and root cadmium concentrations decreased significantly.
- Taxon
- spring wheatTriticum aestivume1
- Treatment
- Zne0
- Outcome
- Cd concentrations in shoots and rootse0
- Direction
- decreasede0
- Qualifier
- >200 μmol/Le0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cd concentrations in shoots and roots in Experiment 1 increased marginally but not consistently with Zn increasing at Zn rates of 1≈200 μmol/L, and then decreased significantly at high rates (>200 μmol/L).”
e1“spring wheat (cv. Brookton)”
Claim · model-written summary
Short time radiolabeled cadmium activity in shoots and roots responded to zinc similarly to long time cadmium concentration.
- Taxon
- spring wheatTriticum aestivume1
- Outcome
- response of109Cd activities in shoots and rootse0
- Direction
- greatly similare0
- Comparator
- response of Cd concentrationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the response of109Cd activities in shoots and roots to increasing Zn was greatly similar to the response of Cd concentrations to Zn increasing in Experiment 1”
e1“spring wheat seedlings”
The same questions in other papers
zinc atom · nutrient: content · Triticum aestivum (wheat)Results differ
346 papers in the same direction as this paper · 33 in the opposite direction
- positive
- positive
- positive
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See all 380 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.