Effect of salt stress on fatty acid alterations in some strains of Dipodascopsis and Dipodascus spp.

The effect of salt stress (8% w/v NaCl) on fatty acid composition of eight strains of Dipodascus and Dipodascopsis spp. varied from being of slight influence only (Dipodascopsis uninucleata), to decreasing the content of 18:2 (D. reesii, D. tetrasperma and D. australiensis) and to decreasing both 18:1 and 18:2 (D. tothii and D. aggregatus) with a concomitant rise of 14:1 and 16:1. With the exception of D. aggregatus, NaCl inhibited lipid accumulation in all strains. Only trace amounts of fatty acids over C₁₈ in chain length were found.J. ajbidor, M. Lamaka, A. Chrastina and P. Pokreisz are with the Department of Biochemical Technology, Slovak Technical University, Radlinskeho 9, 812 37, Bratislava, Slovak Republic; E. Breirerová is with the Institute of Chemistry, Slovak Academy of Science, Dúbravská cesta 9, Slovak Republic. M. Certík is with the Research Institute of Gerontology, Zámocká ul, P.O. Box 25, 901 01 Malacky, Slovak Republic.