TABLE 2

Tetraploids are not generally sensitive to stress

Stress1n4n
Paraquat++++++++++
Menadione++++++++++
H2O2++++++++
Sorbitol++++++++++
NaCl++++++++++
LiCl++++++++++
Calcofluor white++++++++++
Growth at 37°++++
Heat shock at 50°++++++
Zymolase resistance+++++++++
  • Haploids and tetraploids were examined for their response to a variety of stresses. Growth was scored in a range (+ to +++++) relative to a control plate (no stress). Cells were exposed to the following: oxidative stress (paraquat 1 μm–1 mm, menadione 10 μm–1 mm, H2O2 2 mm–6 mm), high osmolarity (sorbitol 1–2 m), salt stress (NaCl 1–100 mm), toxic ions (LiCl 10 mm), calcofluor white (0.025–0.1 mg/ml), continuous growth at high temperatures (37°), heat-shock resistance in stationary phase (50°), and resistance to 0.15 mg/ml zymolase 100T in stationary phase.