Abstract
Abstract Common bean ( Phaseolus vulgaris L.) proved to be very sensitive of low pH (4.3), with large genotypic differences in proton sensitivity. Therefore, proton toxicity did not allow the screening of common bean genotypes for aluminium (Al) resistance using the established protocol for maize (0.5 mM CaCl 2 , 8 μM H 3 BO 3 , pH 4.3). Increasing the pH to 4.5, the Ca 2+ concentration to 5 mM, and addition of 0.5 mM KCl fully prevented proton toxicity in 28 tested genotypes and allowed to identify differences in Al resistance using the inhibition of root elongation by 20 μM Al supply for 36 h as parameter of Al injury. As in maize, Al treatment induced callose formation in root apices of common bean. Aluminium‐induced callose formation well reflected the effect of Ca supply on Al sensitivity as revealed by root‐growth inhibition. Aluminum‐induced callose formation in root apices of 28 bean genotypes differing in Al resistance after 36 h Al treatment was positively correlated to Al‐induced inhibition of root elongation and Al contents in the root apices. However, the relationship was less close than previously reported for maize. Also, after 12 h Al treatment, callose formation and Al contents in root apices did not reflect differences in Al resistance between two contrasting genotypes, indicating a different mode of the expression of Al toxicity and regulation of Al resistance in common bean than in maize.
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Claims 10
Claim · model-written summary
Common bean was very sensitive to low pH, with genotypic variation.
- Taxon
- Common bean
Phaseolus vulgarise0 - Treatment
- low pH (4.3)e0
- Outcome
- proton sensitivitye0
- Value
- 4.3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Common bean ( Phaseolus vulgaris L.) proved to be very sensitive of low pH (4.3), with large genotypic differences in proton sensitivity.”
Claim · model-written summary
Proton toxicity prevented common bean aluminium-resistance screening using the maize protocol.
- Taxon
- common beanPhaseolus vulgarise0
- Outcome
- screening of common bean genotypes for aluminium (Al) resistancee0
- Comparator
- established protocol for maizee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“proton toxicity did not allow the screening of common bean genotypes for aluminium (Al) resistance using the established protocol for maize (0.5 mM CaCl 2 , 8 μM H 3 BO 3 , pH 4.3).”
Claim · model-written summary
The adjusted nutrient solution prevented proton toxicity in 28 genotypes.
- Taxon
- genotypese0
- Treatment
- Increasing the pH to 4.5, the Ca 2+ concentration to 5 mM, and addition of 0.5 mM KCle0
- Outcome
- proton toxicitye0
- Direction
- preventede0
- Value
- 28 tested genotypese0
Not reportedComparator
Verbatim
e0“Increasing the pH to 4.5, the Ca 2+ concentration to 5 mM, and addition of 0.5 mM KCl fully prevented proton toxicity in 28 tested genotypes”
Claim · model-written summary
The adjusted solution permitted discrimination of aluminium resistance through root elongation inhibition.
- Taxon
- common beanPhaseolus vulgarise1
- Outcome
- differences in Al resistancee0
- Value
- 20 μM Al supply for 36 he0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“allowed to identify differences in Al resistance using the inhibition of root elongation by 20 μM Al supply for 36 h as parameter of Al injury.”
e1“Common bean ( Phaseolus vulgaris L.) proved to be very sensitive of low pH (4.3), with large genotypic differences in proton sensitivity.”
Claim · model-written summary
Aluminium treatment induced root-apex callose.
- Taxon
- common beanPhaseolus vulgarise0
- Organ / stage
- root apicese0
- Treatment
- Al treatmente0
- Outcome
- callose formatione0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Al treatment induced callose formation in root apices of common bean.”
Claim · model-written summary
Aluminium-induced callose reflected calcium effects on aluminium sensitivity.
- Taxon
- common beanPhaseolus vulgarise1
- Treatment
- Ca supplye0
- Outcome
- Aluminium‐induced callose formatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aluminium‐induced callose formation well reflected the effect of Ca supply on Al sensitivity as revealed by root‐growth inhibition.”
e1“Common bean ( Phaseolus vulgaris L.) proved to be very sensitive of low pH (4.3), with large genotypic differences in proton sensitivity.”
Claim · model-written summary
Root-apex callose after 36 hours correlated positively with aluminium-induced root-elongation inhibition.
Verbatim
e0“Aluminum‐induced callose formation in root apices of 28 bean genotypes differing in Al resistance after 36 h Al treatment was positively correlated to Al‐induced inhibition of root elongation and Al contents in the root apices.”
Claim · model-written summary
Root-apex callose after 36 hours correlated positively with root-apex aluminium content.
Verbatim
e0“Aluminum‐induced callose formation in root apices of 28 bean genotypes differing in Al resistance after 36 h Al treatment was positively correlated to Al‐induced inhibition of root elongation and Al contents in the root apices.”
Claim · model-written summary
After 12 hours, callose did not reflect resistance differences between contrasting genotypes.
Verbatim
e0“after 12 h Al treatment, callose formation and Al contents in root apices did not reflect differences in Al resistance between two contrasting genotypes”
Claim · model-written summary
After 12 hours, root-apex aluminium content did not reflect resistance differences.
Verbatim
e0“after 12 h Al treatment, callose formation and Al contents in root apices did not reflect differences in Al resistance between two contrasting genotypes”
The same questions in other papers
aluminium atom · molecular: metabolites · Phaseolus vulgaris (common bean)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- negative
ph · pest · Phaseolus vulgaris (common bean)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- no effect
- no effect
- positive
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.