Subcellular Adaptation to Salinity and Irradiance in Dunaliella salina |
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Authors: | E. Stoynova-Bakalova T. Toncheva-Panova |
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Affiliation: | (1) Institute of Plant Physiology “Acad. M. Popov”, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Block 21, BG-1113 Sofia, Bulgaria |
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Abstract: | 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. This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | cell ultrastructure chloroplast wall-less alga halotolerance long-term stress |
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