Aluminium speciation in the presence of wheat root cell walls: a wet chemical study

ABSTRACT Hydrolysis of Al3+ was performed in the presence of isolated root cell walls from a series of wheat cultivars (Triticum aestivum L.) known to have differential tolerance to Al contamination. Aluminium speciation was dependent on the cell wall concentration. At low cell wall concentrations,...

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Published inPlant, cell and environment Vol. 20; no. 4; pp. 504 - 512
Main Authors MASION, A., BERTSCH, P. M.
Format Journal Article
LanguageEnglish
Published Oxford, UK Blackwell Publishing Ltd 01.04.1997
Blackwell
Subjects
Al speciation
Al tolerance
Animal, plant and microbial ecology
Applied ecology
Biological and medical sciences
cell wall
Ecotoxicology, biological effects of pollution
Effects of pollution and side effects of pesticides on plants and fungi
ferron
Fundamental and applied biological sciences. Psychology
wheat (Triticum aestivum L.)
Monocotyledones
Genetic variability
Root
Toxicity
Tolerance
Inorganic element
Cereal crop
Cell wall
Hydrolysis
Phytotoxicity
Gramineae
Angiospermae
Spermatophyta
Aluminium Ions
Speciation
Triticum aestivum
Cultivar
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Summary:ABSTRACT Hydrolysis of Al3+ was performed in the presence of isolated root cell walls from a series of wheat cultivars (Triticum aestivum L.) known to have differential tolerance to Al contamination. Aluminium speciation was dependent on the cell wall concentration. At low cell wall concentrations, significant amounts of the very toxic Al13 species were formed. At higher cell wall concentrations, formation of the tridecamer was hindered or completely inhibited. The sensitive wheat cultivars displayed a higher affinity for aluminium than the tolerant cultivars. A possible Al tolerance mechanism based on cell wall permeability is discussed.
ISSN:0140-7791
1365-3040
DOI:10.1046/j.1365-3040.1997.d01-86.x