The Defective Potassium Uptake by TRK1 and TRK2 Mutant of Saccharomyces cerevisiae Using Homologous Recombination

Abstract:

In order to perform the regulation and functional study and the screening of potassium uptake genes, the high affinity K+ uptake genes TRK1 and TRK2 in Saccharomyces cerevisiae were replaced with URA3 and HIS3 alternately using the methods of homologous recombination. URA3 and HIS3 of S. Cerevisiae were used as marker gene, the defective K+ uptake TRK1 and TRK2 mutant of S. Cerevisiae were selected in the basic medium without Histidine and Uracil.