Abstract
Iron (Fe) toxicity is recognized as a widely observed nutritional disorder that lowers rice crop productivity worldwide. The high concentration of Fe in soil may also alter the uptake and accumulation of other mineral elements. However, the relative change in the accumulation of other mineral elements affected by Fe toxicity is largely unknown. Therefore, this experiment studied the mineral nutrition of two Fe-tolerant (Bw372 and Bw267-3) and Fe-susceptible (Bw272-6B and Bg359) rice varieties to variable Fe concentration in the growing medium. Four Fe concentrations were used; 7 mgL− 1(1.25 × 10− 4molL− 1), 100 mgL− 1 (1.79 × 10− 3molL− 1), 300 mgL− 1 (5.37 × 10− 3 molL− 1), and 500 mgL− 1 (8.95 × 10− 3 molL− 1). The experiment was conducted as a hydroponic system with 15 plants as replicates for each treatment combination. Results revealed that, when increasing Fe concentration in the growing medium, tissue Fe, Na, and Co concentrations increased while tissue Mn, Mg, Mo, Cu, Zn, and Cd concentrations decreased for all the varieties. When comparing varieties, the concentration of Fe in Bw372 was the lowest, and that in Bw272-6B was the highest. As a result, the reduction in shoot dry weight (SDW) and root length (RL) to increased Fe concentration was the lowest in Bw372 (33% for SDW and 40% for RL) and highest in Bw272-6B (64% for SDW and 52% for RL). Moreover, Bw372 and Bw267-3 did not show bronzing symptoms when grown in any of the tested Fe concentrations. These traits have contributed to Bw272-6B being susceptible and Bw372 being tolerant to Fe toxicity.
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Claims 11
Claim · model-written summary
Increasing Fe in the growing medium increased tissue Fe, Na and Co concentrations in all rice varieties.
- Taxon
- rice (Oryza sativa L.)
Oryza sativat0 - Material
- all the varietiese0
- Treatment
- increasing Fe concentration in the growing mediume0
- Outcome
- tissue Fe, Na, and Co concentrationse0
- Direction
- increasede0
- Setting
- Sri Lankat0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Iron toxicity-related morphological and biochemical variations of selected rice (Oryza sativa L.) varieties in Sri Lanka”
e0“when increasing Fe concentration in the growing medium, tissue Fe, Na, and Co concentrations increased while tissue Mn, Mg, Mo, Cu, Zn, and Cd concentrations decreased for all the varieties”
Claim · model-written summary
Increasing Fe in the growing medium decreased tissue Mn, Mg and Mo concentrations in all rice varieties.
- Taxon
- rice (Oryza sativa L.)Oryza sativat0
- Material
- all the varietiese0
- Treatment
- increasing Fe concentration in the growing mediume0
- Outcome
- tissue Mn, Mg, Moe0
- Direction
- decreasede0
- Setting
- Sri Lankat0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Iron toxicity-related morphological and biochemical variations of selected rice (Oryza sativa L.) varieties in Sri Lanka”
e0“when increasing Fe concentration in the growing medium, tissue Fe, Na, and Co concentrations increased while tissue Mn, Mg, Mo, Cu, Zn, and Cd concentrations decreased for all the varieties”
Claim · model-written summary
Increasing Fe in the growing medium decreased tissue Cu, Zn and Cd concentrations in all rice varieties.
- Taxon
- rice (Oryza sativa L.)Oryza sativat0
- Material
- all the varietiese0
- Treatment
- increasing Fe concentration in the growing mediume0
- Outcome
- Cu, Zn, and Cde0
- Direction
- decreasede0
- Setting
- Sri Lankat0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Iron toxicity-related morphological and biochemical variations of selected rice (Oryza sativa L.) varieties in Sri Lanka”
e0“when increasing Fe concentration in the growing medium, tissue Fe, Na, and Co concentrations increased while tissue Mn, Mg, Mo, Cu, Zn, and Cd concentrations decreased for all the varieties”
Claim · model-written summary
Bw372 had the lowest Fe concentration among the rice varieties.
- Taxon
- rice (Oryza sativa L.)Oryza sativat0
- Material
- Bw372e1
- Outcome
- the concentration of Fee1
- Direction
- loweste1
- Setting
- Sri Lankat0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Iron toxicity-related morphological and biochemical variations of selected rice (Oryza sativa L.) varieties in Sri Lanka”
e1“When comparing varieties, the concentration of Fe in Bw372 was the lowest, and that in Bw272-6B was the highest”
Claim · model-written summary
Bw272-6B had the highest Fe concentration among the rice varieties.
- Taxon
- rice (Oryza sativa L.)Oryza sativat0
- Material
- Bw272-6Be1
- Outcome
- the concentration of Fee1
- Direction
- higheste1
- Setting
- Sri Lankat0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Iron toxicity-related morphological and biochemical variations of selected rice (Oryza sativa L.) varieties in Sri Lanka”
e1“When comparing varieties, the concentration of Fe in Bw372 was the lowest, and that in Bw272-6B was the highest”
Claim · model-written summary
Bw372 showed a 33% reduction in shoot dry weight under increased Fe concentration, the lowest among varieties.
- Taxon
- rice (Oryza sativa L.)Oryza sativat0
- Material
- Bw372e2
- Treatment
- increased Fe concentratione2
- Outcome
- shoot dry weight (SDW)e2
- Direction
- loweste2
- Value
- 33%e2
- Setting
- Sri Lankat0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Iron toxicity-related morphological and biochemical variations of selected rice (Oryza sativa L.) varieties in Sri Lanka”
e2“the reduction in shoot dry weight (SDW) and root length (RL) to increased Fe concentration was the lowest in Bw372 (33% for SDW and 40% for RL) and highest in Bw272-6B (64% for SDW and 52% for RL)”
Claim · model-written summary
Bw372 showed a 40% reduction in root length under increased Fe concentration, the lowest among varieties.
- Taxon
- rice (Oryza sativa L.)Oryza sativat0
- Material
- Bw372e2
- Treatment
- increased Fe concentratione2
- Outcome
- root length (RL)e2
- Direction
- loweste2
- Value
- 40%e2
- Setting
- Sri Lankat0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Iron toxicity-related morphological and biochemical variations of selected rice (Oryza sativa L.) varieties in Sri Lanka”
e2“the reduction in shoot dry weight (SDW) and root length (RL) to increased Fe concentration was the lowest in Bw372 (33% for SDW and 40% for RL) and highest in Bw272-6B (64% for SDW and 52% for RL)”
Claim · model-written summary
Bw272-6B showed a 64% reduction in shoot dry weight under increased Fe concentration, the highest among varieties.
- Taxon
- rice (Oryza sativa L.)Oryza sativat0
- Material
- Bw272-6Be2
- Treatment
- increased Fe concentratione2
- Outcome
- shoot dry weight (SDW)e2
- Direction
- higheste2
- Value
- 64%e2
- Setting
- Sri Lankat0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Iron toxicity-related morphological and biochemical variations of selected rice (Oryza sativa L.) varieties in Sri Lanka”
e2“the reduction in shoot dry weight (SDW) and root length (RL) to increased Fe concentration was the lowest in Bw372 (33% for SDW and 40% for RL) and highest in Bw272-6B (64% for SDW and 52% for RL)”
Claim · model-written summary
Bw272-6B showed a 52% reduction in root length under increased Fe concentration, the highest among varieties.
- Taxon
- rice (Oryza sativa L.)Oryza sativat0
- Material
- Bw272-6Be2
- Treatment
- increased Fe concentratione2
- Outcome
- root length (RL)e2
- Direction
- higheste2
- Value
- 52%e2
- Setting
- Sri Lankat0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Iron toxicity-related morphological and biochemical variations of selected rice (Oryza sativa L.) varieties in Sri Lanka”
e2“the reduction in shoot dry weight (SDW) and root length (RL) to increased Fe concentration was the lowest in Bw372 (33% for SDW and 40% for RL) and highest in Bw272-6B (64% for SDW and 52% for RL)”
Claim · model-written summary
Bw372 and Bw267-3 showed no bronzing symptoms at any tested Fe concentration.
- Taxon
- rice (Oryza sativa L.)Oryza sativat0
- Material
- Bw372 and Bw267-3e3
- Outcome
- bronzing symptomse3
- Qualifier
- in any of the tested Fe concentrationse3
- Setting
- Sri Lankat0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Iron toxicity-related morphological and biochemical variations of selected rice (Oryza sativa L.) varieties in Sri Lanka”
e3“Bw372 and Bw267-3 did not show bronzing symptoms when grown in any of the tested Fe concentrations”
Claim · model-written summary
Traits of Bw372 contributed to its tolerance to Fe toxicity, while Bw272-6B was susceptible.
- Taxon
- rice (Oryza sativa L.)Oryza sativat0
- Material
- Bw372e4
- Outcome
- tolerant to Fe toxicitye4
- Qualifier
- These traits have contributede4
- Setting
- Sri Lankat0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Iron toxicity-related morphological and biochemical variations of selected rice (Oryza sativa L.) varieties in Sri Lanka”
e4“These traits have contributed to Bw272-6B being susceptible and Bw372 being tolerant to Fe toxicity”
The same questions in other papers
iron atom · growth · Oryza sativa (rice)Results differ
35 papers in the same direction as this paper · 26 in the opposite direction
- negative
- negative
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