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Polyol concentrations in Aspergillus repens grown under salt stress
1Department of Microbiology and Biotechnology Centre, Faculty of Science, M.S. University of Baroda, 390 002, Baroda, India.
Abstract:
Na(+), K(+) and the ratio of Na(+)/K(+) were higher in cells of the halotolerant Aspergillus repens grown with 2 M NaCl than without NaCl. The osmolytes, proline, glycerol, betaine and glutamate, did not affect the Na(+)/K(+) ratio, nor the polyol content of cells under any conditions. The concentrations of polyols, consisting of glycerol, arabitol, erythritol and mannitol, changed markedly during growth, indicating that they have a crucial role in osmotic adaptation.
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