Figure 2. Complementation of a yeast inorganic phosphate (Pi) transport mutant by GmPTs genes.
Yeast MB192 cells harboring either an empty expression vector (control) or the candidate Pht1 ORF(open reading frame), transformants were grown in YNB medium to an OD600 ≈0.8, then washed by 3% glucose with centrifugation at 1500 g, 4°C, and suspended in phosphate free YNB medium to OD600 ≈1.0. Different number cells (5×105, 5×104, 5×103) were applied to Pi-limiting medium (20 µM, pH 6.0) then incubated at 30°C for 3 d.