Abstract
Aluminium ion (Al3+) toxicity and hydrogen ion (H+) activity are the major constraints for plant growth in acid soil. This study was undertaken to determine the effect of pH and Al on the growth response and changes in root morphology of Al-tolerant (ET8) and Al-sensitive (ES8) wheat seedlings. Different levels of AlCl3 and CaCO3 were added to the soils to manipulate soil pH and extractable Al. The results showed that the bulk soil pH remained constant at pH 4.1 with further applications of AlCl3, and that the seedlings died at the 200 mg AlCl3/kg treatments. The ET8 seedlings responded better than the ES8 seedlings in both low and high Al and pH. The ET8 seedlings had higher root surface areas and root tip numbers than the ES8 seedlings in the Al treatment. In contrast, the ES8 had higher root diameters than the ET8 seedlings due to the elevated Al supply. Apoplast Al increased with the increase of soil available extractable Al, and declined with the decrease of soil extractable Al. The ET8 seedlings accumulated more Al in their apoplast than the ES8 seedlings. This study concluded that accumulation of Al in the apoplast is also involved in Al tolerance mechanism with the addition of organic acid exudation.
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Claims 9
Claim · model-written summary
Bulk soil pH remained constant at pH 4.1 with further applications of AlCl3
- Taxon
- wheat
Triticum aestivume1 - Treatment
- further applications of AlCl3e2
- Outcome
- bulk soil pHe2
- Direction
- remained constante2
- Value
- pH 4.1e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“This study was undertaken to determine the effect of pH and Al on the growth response and changes in root morphology of Al-tolerant (ET8) and Al-sensitive (ES8) wheat seedlings”
e2“the bulk soil pH remained constant at pH 4.1 with further applications of AlCl3”
Claim · model-written summary
Seedlings died at the 200 mg AlCl3/kg treatments
- Taxon
- wheatTriticum aestivume1
- Treatment
- 200 mg AlCl3/kge3
- Outcome
- seedlings diede3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“This study was undertaken to determine the effect of pH and Al on the growth response and changes in root morphology of Al-tolerant (ET8) and Al-sensitive (ES8) wheat seedlings”
e3“the seedlings died at the 200 mg AlCl3/kg treatments”
Claim · model-written summary
ET8 seedlings responded better than ES8 seedlings in both low and high Al and pH
- Taxon
- wheatTriticum aestivume1
- Material
- ET8e4
- Treatment
- low and high Al and pHe4
- Outcome
- responded bettere4
- Direction
- bettere4
- Comparator
- ES8 seedlingse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“This study was undertaken to determine the effect of pH and Al on the growth response and changes in root morphology of Al-tolerant (ET8) and Al-sensitive (ES8) wheat seedlings”
e4“The ET8 seedlings responded better than the ES8 seedlings in both low and high Al and pH”
Claim · model-written summary
ET8 seedlings had higher root surface areas and root tip numbers than ES8 seedlings in the Al treatment
- Taxon
- wheatTriticum aestivume1
- Material
- ET8e5
- Organ / stage
- roote5
- Treatment
- Al treatmente5
- Outcome
- root surface areas and root tip numberse5
- Direction
- highere5
- Comparator
- ES8 seedlingse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“This study was undertaken to determine the effect of pH and Al on the growth response and changes in root morphology of Al-tolerant (ET8) and Al-sensitive (ES8) wheat seedlings”
e5“The ET8 seedlings had higher root surface areas and root tip numbers than the ES8 seedlings in the Al treatment”
Claim · model-written summary
ES8 seedlings had higher root diameters than ET8 seedlings under elevated Al supply
- Taxon
- wheatTriticum aestivume1
- Material
- ES8e6
- Organ / stage
- roote6
- Treatment
- elevated Al supplye6
- Outcome
- root diameterse6
- Direction
- highere6
- Comparator
- ET8 seedlingse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“This study was undertaken to determine the effect of pH and Al on the growth response and changes in root morphology of Al-tolerant (ET8) and Al-sensitive (ES8) wheat seedlings”
e6“In contrast, the ES8 had higher root diameters than the ET8 seedlings due to the elevated Al supply”
Claim · model-written summary
Apoplast Al increased with increasing soil available extractable Al
- Taxon
- wheatTriticum aestivume1
- Treatment
- soil available extractable Ale7
- Outcome
- Apoplast Ale7
- Direction
- increasede7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“This study was undertaken to determine the effect of pH and Al on the growth response and changes in root morphology of Al-tolerant (ET8) and Al-sensitive (ES8) wheat seedlings”
e7“Apoplast Al increased with the increase of soil available extractable Al”
Claim · model-written summary
Apoplast Al declined with decreasing soil extractable Al
- Taxon
- wheatTriticum aestivume1
- Treatment
- soil extractable Ale2
- Outcome
- Apoplast Ale7
- Direction
- declinede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“This study was undertaken to determine the effect of pH and Al on the growth response and changes in root morphology of Al-tolerant (ET8) and Al-sensitive (ES8) wheat seedlings”
e7“Apoplast Al increased with the increase of soil available extractable Al”
e2“declined with the decrease of soil extractable Al”
Claim · model-written summary
ET8 seedlings accumulated more Al in their apoplast than ES8 seedlings
- Taxon
- wheatTriticum aestivume1
- Material
- ET8e2
- Outcome
- Al in their apoplaste2
- Direction
- moree2
- Comparator
- ES8 seedlingse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“This study was undertaken to determine the effect of pH and Al on the growth response and changes in root morphology of Al-tolerant (ET8) and Al-sensitive (ES8) wheat seedlings”
e2“The ET8 seedlings accumulated more Al in their apoplast than the ES8 seedlings”
Claim · model-written summary
Apoplast Al accumulation is involved in Al tolerance, with organic acid exudation
- Taxon
- wheatTriticum aestivume1
- Compound
- organic acide2
- Outcome
- Al tolerancee2
- Qualifier
- accumulation of Al in the apoplaste2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“This study was undertaken to determine the effect of pH and Al on the growth response and changes in root morphology of Al-tolerant (ET8) and Al-sensitive (ES8) wheat seedlings”
e2“accumulation of Al in the apoplast is also involved in Al tolerance mechanism with the addition of organic acid exudation”
The same questions in other papers
aluminium trichloride · soil: chemistry · Triticum aestivum (wheat)Results 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.