(**b**)

**Figure 7.** (**a**) Responses to abiotic stresses through yeast dilution bioassay with the wild type strain, S1fa transformed with pRS-416-GFP. Yeast wild type (EV) strain and S1fa overexpressing cells were grown in the URA liquid medium for 24 h at 28 ◦C. The cell solutions were diluted to an OD600 value of 0.3 and exposed to different types of abiotic stresses. (**A**) URA (control), (**B**) 50 mM Cu, (**C**) 75 mM Hg, (**E**) 100 mM Al, (**D**) 100 mM Co, (**F**) 75 μM Cd, (**G**) 2 M mannitol, (**H**) 1 M NaCl. Triangles represent the 10-fold serial dilutions (the starting OD600 is 0.3). (**b**) Responses to temperature stress tolerance through yeast dilution bioassay with the wild type strain, S1fa transformed with pRS-416- GFP. The yeast cells were exposed to (**A**) low temperature (4 ◦C) and (**B**) high temperature (38 ◦C) for 24 h, and then transferred to a place with the normal temperature (28 ◦C). Triangles represent the 10-fold serial dilutions (the starting OD600 is 0.3).
