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Table 1.

Phosphate concentration (mg kg–1 d. wt) within seedlings of Phragmites australis exposed to 0 and 0·1 mg l–1 Al, with iron, manganese or no plaque on roots

No aluminium Aluminium
No plaque Fe plaque Mn plaque No plaque Fe plaque Mn plaque
DCB 0·64 × 103 ± 0·08 × 103 a 1·4 × 103 ± 0·20 × 103 c 0·91 × 103 ± 0·05 × 103 ab 1·7 × 103 ± 0·19 × 103 c 4·2 × 103 ± 0·21 × 103 d 1·3 × 103 ± 0·18 × 103 bc
Root 10·7 × 103 ± 0·76 × 103 abc 7·9 × 103 ± 0·33 × 103 ab 7·8 × 103 ± 1·9 × 103 a 14·0 × 103 ± 0·49 × 103 c 6·1 × 103 ± 0·93 × 103 a 16·1 × 103 ± 3·2 × 103 c
Shoot 3·5 × 103 ± 0·02 × 103 a 4·3 × 103 ± 0·21 × 103 b 4·3 × 103 ± 0·20 × 103 b 4·4 × 103 ± 0·15 × 103 b 4·6 × 103 ± 0·11 × 103 b 4·3 × 103 ± 0·19 × 103 b

Data are means ± s.e., n = 3.

Different superscript letters in a row indicate a significant difference at P = 0·05.