THE INFLUENCE OF SOME AMINO ACIDS AND THEIR PREDECESSORS ON THE GROWTH
OF YEAST Candida pseudotropicalis DURING "SALT STRESS"
S. Gudz, R. Kuznetsova, V. Chervetsova
Ivan Franko National University of L'viv,
Hrushevskoho st. 4, L'viv 79005, Ukraine
Large membrane permeability and lactose entry is inherent to the cells of yeast Candida pseudotropicalis under "salt stress" conditions. Therefore the -galactosidase synthesis increases.
Inhibition of C.pseudotropicalis growth on salted by NaCl environment is completely eliminated by glutamate, glutamine, aspartate, asparagine, glicine, serine, and predecessors of amino acids -ketoglutarate, citrate, succinate, phosphoglycerate, ribose-5-phosphate, glucose-6-phosphate. Oxaloacetate shows no effect.
The free amino acids' pool in the cells increased under "salt stress" conditions, and glutamate content decreased.
Key words: yeast, "salt stress", permeability, -galactosidase, amino acids.
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