Abstract
The initial response of plants to aluminium (Al) is an inhibition of root elongation. In the present study, short and medium-term effects of Al treatment (20 muM) on root growth and Al accumulation of two common bean (Phaseolus vulgaris L.) genotypes, VAX-1 (Al-sensitive) and Quimbaya (Al-resistant), were studied. Root elongation of both genotypes was severely inhibited during the first 3-4 h of Al treatment. Thereafter, both genotypes showed gradual recovery. However, this recovery continued in genotype Quimbaya until the root elongation rate reached the level of the control (without Al) while the genotype VAX-1 was increasingly damaged by Al after 12 h of Al treatment. Short-term Al treatment (90 microM Al) to different zones of the root apex using agarose blocks corroborated the importance of the transition zone (TZ, 1-2 mm) as a main target of Al. However, Al applied to the elongation zone (EZ) also contributed to the overall inhibition of root elongation. Enhanced inhibition of root elongation during the initial 4 h of Al treatment was related to high Al accumulation in root apices in both genotypes (Quimbaya>VAX-1). Recovery from Al stress was reflected by decreasing Al contents especially in the TZ, but also in the EZ. After 24 h of Al treatment the high Al resistance of Quimbaya was reflected by much lower Al contents in the entire root apex. The results confirmed that genotypic differences in Al resistance in common bean are built up during medium-term exposure of the roots to Al. For this acquisition of Al resistance, the activation and maintenance of an Al exclusion mechanism, especially in the TZ but also in the EZ, appears to be decisive.
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Claims 10
Claim · model-written summary
Al treatment severely inhibited root elongation of both genotypes during the first 3-4 h.
- Taxon
- common bean
Phaseolus vulgarist0 - Material
- both genotypese0
- Treatment
- Al treatmente0
- Outcome
- Root elongatione0
- Direction
- severely inhibitede0
- Qualifier
- during the first 3-4 he0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“two common bean (Phaseolus vulgaris L.) genotypes”
e0“Root elongation of both genotypes was severely inhibited during the first 3-4 h of Al treatment”
Claim · model-written summary
Root elongation in genotype Quimbaya recovered until the rate reached the control level.
- Taxon
- common beanPhaseolus vulgarist0
- Material
- genotype Quimbayae1
- Outcome
- root elongation rate reached the level of the controle1
- Qualifier
- (without Al)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“two common bean (Phaseolus vulgaris L.) genotypes”
e1“However, this recovery continued in genotype Quimbaya until the root elongation rate reached the level of the control (without Al) while the genotype VAX-1 was increasingly damaged by Al after 12 h of Al treatment”
Claim · model-written summary
Genotype VAX-1 was increasingly damaged by Al after 12 h of Al treatment.
- Taxon
- common beanPhaseolus vulgarist0
- Material
- VAX-1e1
- Outcome
- increasingly damaged by Ale1
- Qualifier
- after 12 h of Al treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“two common bean (Phaseolus vulgaris L.) genotypes”
e1“However, this recovery continued in genotype Quimbaya until the root elongation rate reached the level of the control (without Al) while the genotype VAX-1 was increasingly damaged by Al after 12 h of Al treatment”
Claim · model-written summary
Al treatment of the transition zone was corroborated as a main target of Al in common bean root apices.
- Taxon
- common beanPhaseolus vulgarist0
- Organ / stage
- transition zone (TZ, 1-2 mm)e2
- Treatment
- Short-term Al treatment (90 microM Al)e2
- Outcome
- importance of the transition zone (TZ, 1-2 mm) as a main target of Ale2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“two common bean (Phaseolus vulgaris L.) genotypes”
e2“Short-term Al treatment (90 microM Al) to different zones of the root apex using agarose blocks corroborated the importance of the transition zone (TZ, 1-2 mm) as a main target of Al”
Claim · model-written summary
Al applied to the elongation zone also contributed to the overall inhibition of root elongation in common bean.
- Taxon
- common beanPhaseolus vulgarist0
- Organ / stage
- elongation zone (EZ)e3
- Treatment
- Al applied to the elongation zonee3
- Outcome
- contributed to the overall inhibition of root elongatione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“two common bean (Phaseolus vulgaris L.) genotypes”
e3“However, Al applied to the elongation zone (EZ) also contributed to the overall inhibition of root elongation”
Claim · model-written summary
Enhanced inhibition of root elongation in the initial 4 h was related to high Al accumulation in root apices.
- Taxon
- common beanPhaseolus vulgarist0
- Organ / stage
- root apicese4
- Outcome
- inhibition of root elongatione4
- Direction
- Enhancede4
- Qualifier
- high Al accumulation in root apicese4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“two common bean (Phaseolus vulgaris L.) genotypes”
e4“Enhanced inhibition of root elongation during the initial 4 h of Al treatment was related to high Al accumulation in root apices in both genotypes (Quimbaya>VAX-1)”
Claim · model-written summary
Recovery from Al stress was reflected by decreasing Al contents, especially in the transition zone.
- Taxon
- common beanPhaseolus vulgarist0
- Organ / stage
- TZe5
- Outcome
- decreasing Al contentse5
- Qualifier
- but also in the EZe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“two common bean (Phaseolus vulgaris L.) genotypes”
e5“Recovery from Al stress was reflected by decreasing Al contents especially in the TZ, but also in the EZ”
Claim · model-written summary
After 24 h of Al treatment, Quimbaya had much lower Al contents in the entire root apex.
- Taxon
- common beanPhaseolus vulgarist0
- Material
- Quimbayae6
- Outcome
- much lower Al contents in the entire root apexe6
- Qualifier
- After 24 h of Al treatmente6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“two common bean (Phaseolus vulgaris L.) genotypes”
e6“After 24 h of Al treatment the high Al resistance of Quimbaya was reflected by much lower Al contents in the entire root apex”
Claim · model-written summary
Genotypic differences in Al resistance were built up during medium-term exposure to Al.
- Taxon
- common beanPhaseolus vulgarist0
- Outcome
- genotypic differences in Al resistancee7
- Qualifier
- built up during medium-term exposure of the roots to Ale7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“two common bean (Phaseolus vulgaris L.) genotypes”
e7“The results confirmed that genotypic differences in Al resistance in common bean are built up during medium-term exposure of the roots to Al”
Claim · model-written summary
Acquisition of Al resistance is attributed to an Al exclusion mechanism activated and maintained in the transition and elongation zones.
- Taxon
- common beanPhaseolus vulgarist0
- Organ / stage
- TZe1
- Outcome
- acquisition of Al resistancee1
- Qualifier
- the activation and maintenance of an Al exclusion mechanisme1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“two common bean (Phaseolus vulgaris L.) genotypes”
e1“For this acquisition of Al resistance, the activation and maintenance of an Al exclusion mechanism, especially in the TZ but also in the EZ, appears to be decisive”
The same questions in other papers
aluminium atom · growth · Phaseolus vulgaris (common bean)Positive and negative results
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See all 13 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.