Interspecific differences in aluminium tolerance in relation to root cation-exchange capacity

Blamey F.P.C., Robinson N.J. and Asher C.J. (1992) Interspecific differences in aluminium tolerance in relation to root cation-exchange capacity. Plant and Soil, 146 1-2: 77-82. doi:10.1007/BF00011998


Author Blamey F.P.C.
Robinson N.J.
Asher C.J.
Title Interspecific differences in aluminium tolerance in relation to root cation-exchange capacity
Journal name Plant and Soil   Check publisher's open access policy
ISSN 0032-079X
Publication date 1992-01-01
Sub-type Article (original research)
DOI 10.1007/BF00011998
Open Access Status
Volume 146
Issue 1-2
Start page 77
End page 82
Total pages 6
Publisher Kluwer Academic Publishers
Subject 1111 Nutrition and Dietetics
1110 Nursing
1102 Cardiovascular Medicine and Haematology
Abstract Genotypic differences in aluminium (Al) tolerance hold considerable promise in overcoming an important limitation to plant growth in acid soils. Little is known, however, about the biochemical basis of such differences. Extracellular properties, particularly low root cation-exchange capacity (CEC), have been associated with Al tolerance, since roots of low CEC adsorb less Al than do those of high CEC. A solution culture study was conducted in which 12 plant species (monocots and dicots) were grown in solution culture of low ionic strength (ca 2 m M) for 8 d at four Al concentrations (0, 16, 28 and 55 μM). The species differed significantly in Al tolerance as shown by differences in root length. Root length relative to that of the same species grown in the absence of Al varied from 6 to 117% at 16 μM Al, and from 6 to 75% at 28 μM Al. Species tolerance of Al was not closely associated with differences in root CEC. Although in some species Al sensitivity was associated with high adsorption of Al during a 10- or 40-min exposure to Al (expressed on a fresh mass or root length basis), this was not a good predictor of Al tolerance across all species studied.
Keyword aluminium genotype
root cation-exchange capacity
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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