Table 4.
Ion concentrations in isolated chloroplasts vs. whole-leaf tissue for three halophytes grown at 340–400 mm NaCl
Species | Chloroplast or whole leaf | Na+ (mm) | K+ (mm) | Cl–(mm) | Method and reference |
---|---|---|---|---|---|
Mesembryanthemum cristallinum (400 mm NaCl) | Chloroplast | 156–234 | 35–54 | 42–64 | Isolated chloroplasts, Demming and Winter (1986) |
Leaf | 498 | 19 | 374 | ||
Suaeda australis (350 mm NaCl) | Chloroplast | 104 | 73 | 98 | Isolated chloroplasts, Robinson and Downton (1985) |
Leaf | 683 | 67 | 372 | ||
Suaeda maritima (340 mM maCl) | Chloroplast* | 133 | 28 | 126 | X-ray microanalysis of whole leaf, Harvey et al. (1981) |
Leaf | 494 | 39 | 351 | ||
Suaeda maritima (340 mm NaCl) | Chloroplast* † ‡ | 108 | 29 | 110 | X-ray microanalysis of whole leaf, Hajibagheri et al. (1984b) |
*Adjusted for 78 % solute available space.
†Data for 90 % of chloroplasts; 10 % had values of Na 329, K 46 and Cl 272 mm.
‡Leaf concentrations would have been similar to the values in the row above.