Fig. 3

The growth rate of haploid strains under different nitrogen (a) and carbon (b) sources treatments. Growth rates of the T and MT strains were measured by OD₆₀₀ at an interval of 12 h culture in prepared medium. The BM medium with 20 mm/L KNO₃ and 50 mm/L as nitrogen and carbon sucroses was prepared as control (CK). The YEPS medium was chosen as nutritious substrate. a Different nitrogen source (peptone, urea, NH₄NO₃, (NH₄)₂SO₄, arginine, methionine or sodium glutamate) was added to BM medium, with the c (N) = 20 mmol/L. Growth rate of the UeT55 (left) and UeMT46 (right) were measured by OD₆₀₀ at an interval of 12 h culture in the prepared media. b Different carbon source (maltose, lactose, fructose, glucose, galatose, sorbitol or mannitol) was added to BM medium, with the c (C₆) = 100 mmol/L. Growth rate of the UeT55 (left) and UeMT46 (right) were measured by OD₆₀₀ at an interval of 12 h culture in the prepared media