A brackish water charophyte Lamprothamnium living in brackish water is exposed to daily fluctuation of the external osmotic pressure. Like marine algal cells, the internodal cell of Lamprothamnium keeps its turgor pressure even when challenged with a wide range of both external (Bisson and Kirst 1980) and internal osmotic pressures (Okazaki et al. 1984a). The turgor regulation is implemented mainly through the release of K+ and Cl- into a hypotonic medium and through the uptake of these ions from a hypertonic medium (Bisson and Kirst 1980; Okazaki et al. 1984b).
Was this article helpful?