Biologia Plantarum

, Volume 47, Issue 2, pp 233–236

Subcellular Adaptation to Salinity and Irradiance in Dunaliella salina

  • E. Stoynova-Bakalova
  • T. Toncheva-Panova

DOI: 10.1023/B:BIOP.0000022257.34916.c5

Cite this article as:
Stoynova-Bakalova, E. & Toncheva-Panova, T. Biologia Plantarum (2003) 47: 233. doi:10.1023/B:BIOP.0000022257.34916.c5


Dunaliella salina V-63 was cultivated in different concentrations of NaCl (0.5, 1.0, 2.5, 3.0, or 4.0 M) and at two irradiances (170 or 220 μmol m−2s−1). Concentration-dependent suppression of growth was observed above 1 M NaCl, and elevated salinity induced formation of salt-containing vacuoles. However, the changes in the chloroplast ultrastructure following changes in salinity and irradiance (increase of invaginations and protuberances, numerous grana with low number of thylakoids, less number of starch grains, etc.) appeared to be of primary importance.

cell ultrastructure chloroplast wall-less alga halotolerance long-term stress 

Copyright information

© Kluwer Academic Publishers 2003

Authors and Affiliations

  • E. Stoynova-Bakalova
    • 1
  • T. Toncheva-Panova
    • 1
  1. 1.Institute of Plant Physiology “Acad. M. Popov”Bulgarian Academy of SciencesSofiaBulgaria