biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 46:233-236, 2003 | DOI: 10.1023/B:BIOP.0000022257.34916.c5

Subcellular Adaptation to Salinity and Irradiance in Dunaliella salina

E. Stoynova-Bakalova1, T. Toncheva-Panova1
1 Institute of Plant Physiology "Acad. M. Popov", Bulgarian Academy of Sciences, Sofia, Bulgaria

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.

Keywords: cell ultrastructure; chloroplast; wall-less alga; halotolerance; long-term stress
Subjects: chloroplast, cell ultrastructure; Dunaliella salina; long-term tolerance to salinity; resistance/tolerance to salinity; salt stress, PFD, subcellular adaptation; salt stress, tolerance; subcellular adaptation to salinity

Published: September 1, 2003  Show citation

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Stoynova-Bakalova, E., & Toncheva-Panova, T. (2003). Subcellular Adaptation to Salinity and Irradiance in Dunaliella salina. Biologia plantarum46(2), 233-236. doi: 10.1023/B:BIOP.0000022257.34916.c5
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