Abstract
Abstract Effects of calcium (1, 2 and 5 mM) and aluminum (0, 15 and 45 μM) on growth and internal nutrient concentrations were examined with 12 sorghum genotypes (Sorghum bicolor (L.) Moench) in a nutrient solution experiment with a factorial design. At 1 (or 2) mM Ca the severity of root damage induced by Al well reflected the genotypical variation in growth response to Al toxicity. Severity of Al‐induced root damage slightly decreased with increasing Ca level. Moreover, Ca at 5 mM amplified the Mg deficiency induced by Al, as seen from both heavier deficiency symptoms and lower internal Mg concentrations. Under conditions of Al stress at a high Ca supply, induced Mg deficiency apparently predominated the genotypical differentiation in growth response to Al toxicity. An antagonism between Al‐ and Ca ions for uptake was hardly found with the sorghum genotypes. However, the genotypes differed in Ca efficiency, a characteristic which may be relevant in assessing their sensitivity to Mg deficiency.
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Claims 7
Claim · model-written summary
At 1 or 2 mM calcium, aluminum-induced root damage reflected genotype variation in growth response.
SorghumNot reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 1 (or 2) mM Ca the severity of root damage induced by Al well reflected the genotypical variation in growth response to Al toxicity.”
t0“sorghum genotypes”
Claim · model-written summary
Aluminum-induced root damage declined slightly as calcium increased.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Severity of Al‐induced root damage slightly decreased with increasing Ca level.”
t0“sorghum genotypes”
Claim · model-written summary
At 5 mM calcium, aluminum-induced magnesium deficiency symptoms became heavier.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ca at 5 mM amplified the Mg deficiency induced by Al, as seen from both heavier deficiency symptoms and lower internal Mg concentrations.”
t0“sorghum genotypes”
Claim · model-written summary
At 5 mM calcium, aluminum-induced internal magnesium concentrations were lower.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ca at 5 mM amplified the Mg deficiency induced by Al, as seen from both heavier deficiency symptoms and lower internal Mg concentrations.”
t0“sorghum genotypes”
Claim · model-written summary
Under high calcium and aluminum stress, magnesium deficiency apparently dominated genotype differences in growth response.
- Treatment
- Al stress at a high Ca supplye0
- Outcome
- genotypical differentiation in growth response to Al toxicitye0
- Qualifier
- induced Mg deficiency apparently predominatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under conditions of Al stress at a high Ca supply, induced Mg deficiency apparently predominated the genotypical differentiation in growth response to Al toxicity.”
t0“sorghum genotypes”
Claim · model-written summary
Little antagonism between aluminum and calcium uptake was found.
- Outcome
- An antagonism between Al‐ and Ca ions for uptakee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An antagonism between Al‐ and Ca ions for uptake was hardly found with the sorghum genotypes.”
Claim · model-written summary
Sorghum genotypes differed in calcium efficiency.
- Material
- genotypese0
- Outcome
- Ca efficiencye0
- Qualifier
- may be relevant in assessing their sensitivity to Mg deficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the genotypes differed in Ca efficiency, a characteristic which may be relevant in assessing their sensitivity to Mg deficiency.”
t0“sorghum genotypes”
The same questions in other papers
calcium atom · nutrient: content · SorghumPositive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
calcium atom · disease · SorghumResults agree
1 paper in the same direction as this paper
- negative
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.