Abstract
Aluminium (Al) tolerance in an Al-tolerant cultivar of Phaseolus vulgaris L. (‘Dade’) was found to be an inducible trait. Upon exposure to 10 μM Al, the rate of root elongation was inhibited in comparison to controls. During the following 72 h, the rate of elongation returned to levels comparable to controls. In contrast, root elongation of an Al-sensitive cultivar (‘Romano’) did not recover after exposure to Al. In Dade, the resumption of root elongation following exposure to Al was accompanied by increased rates of root respiration, whereas respiration rates slowly declined over the 72 h treatment period in Romano. When partitioned into growth and maintenance expenditures, a larger proportion of root respiration of Dade exposed to Al was allocated to maintenance processes, potentially reflecting diversion of energy to metabolic pathways that offset the adverse effects of Al toxicity. Romano did not show such a pattern and respiration associated with both growth and maintenance was reduced after exposure to Al. Root and shoot growth of both cultivars were also measured to determine the effects of long-term (21 d) exposure to 10 μM Al. Dade plants exposed to Al exhibited enhanced growth in comparison to controls, whereas Romano plants were characterized by reduced shoot and root growth. Modelling the time-course of root respiration and measuring the long-term growth responses to Al is a valuable method of elucidating respiratory costs of stress tolerance.
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Claims 10
Claim · model-written summary
Dade aluminium tolerance was inducible.
- Taxon
- Phaseolus vulgaris L.
Phaseolus vulgarise0 - Material
- Dadee0
- Outcome
- Aluminium (Al) tolerance in an Al-tolerant cultivar of Phaseolus vulgaris L. (‘Dade’) was found to be an inducible traite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aluminium (Al) tolerance in an Al-tolerant cultivar of Phaseolus vulgaris L. (‘Dade’) was found to be an inducible trait”
Claim · model-written summary
Aluminium initially inhibited Dade root elongation relative to controls.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Treatment
- 10 μM Ale0
- Outcome
- Upon exposure to 10 μM Al, the rate of root elongation was inhibited in comparison to controlse0
- Direction
- inhibitede0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Upon exposure to 10 μM Al, the rate of root elongation was inhibited in comparison to controls”
t0“Phaseolus vulgarisL.”
Claim · model-written summary
Dade root elongation returned to control levels over 72 hours.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Outcome
- During the following 72 h, the rate of elongation returned to levels comparable to controlse0
- Direction
- returnede0
- Comparator
- controlse0
Not reportedMaterial
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During the following 72 h, the rate of elongation returned to levels comparable to controls”
t0“Phaseolus vulgarisL.”
Claim · model-written summary
Romano root elongation did not recover after aluminium exposure.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Material
- Romanoe0
- Treatment
- Ale0
- Outcome
- root elongation of an Al-sensitive cultivar (‘Romano’) did not recover after exposure to Ale0
- Direction
- did not recovere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root elongation of an Al-sensitive cultivar (‘Romano’) did not recover after exposure to Al”
t0“Phaseolus vulgarisL.”
Claim · model-written summary
Dade root respiration increased as root elongation resumed.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Treatment
- Ale0
- Outcome
- the resumption of root elongation following exposure to Al was accompanied by increased rates of root respiratione0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the resumption of root elongation following exposure to Al was accompanied by increased rates of root respiration”
t0“Phaseolus vulgarisL.”
Claim · model-written summary
Romano root respiration declined over 72 hours.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Material
- Romanoe0
- Outcome
- respiration rates slowly declined over the 72 h treatment period in Romanoe0
- Direction
- declinede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“respiration rates slowly declined over the 72 h treatment period in Romano”
t0“Phaseolus vulgarisL.”
Claim · model-written summary
A larger share of Dade root respiration was allocated to maintenance under aluminium.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Material
- Dadee0
- Treatment
- Ale0
- Outcome
- a larger proportion of root respiration of Dade exposed to Al was allocated to maintenance processese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a larger proportion of root respiration of Dade exposed to Al was allocated to maintenance processes”
t0“Phaseolus vulgarisL.”
Claim · model-written summary
Romano growth and maintenance respiration declined after aluminium exposure.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Treatment
- Ale0
- Outcome
- respiration associated with both growth and maintenance was reduced after exposure to Ale0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“respiration associated with both growth and maintenance was reduced after exposure to Al”
t0“Phaseolus vulgarisL.”
Claim · model-written summary
Long-term aluminium enhanced Dade growth compared with controls.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Material
- Dadee0
- Treatment
- Ale0
- Outcome
- Dade plants exposed to Al exhibited enhanced growth in comparison to controlse0
- Direction
- enhancede0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dade plants exposed to Al exhibited enhanced growth in comparison to controls”
t0“Phaseolus vulgarisL.”
Claim · model-written summary
Long-term aluminium reduced Romano shoot and root growth.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Material
- Romanoe0
- Outcome
- Romano plants were characterized by reduced shoot and root growthe0
- Direction
- reducede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Romano plants were characterized by reduced shoot and root growth”
t0“Phaseolus vulgarisL.”
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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.