Figure 2
Effect of the plant PeptoQ on salt-induced inhibition of cell proliferation in tobacco BY-2 cells. Time courses of cell density in the absence of salt stress (0 mM NaCl, open circles), under moderate (75 mM NaCl, grey squares), and under severe salt stress (150 mM NaCl, black triangles) without (A) or with (B) plant PeptoQ (2 µM). (C) Doubling time estimated from the time constant of exponential growth over the concentration of NaCl without (open bars) or with (filled bars) plant PeptoQ (2 µM). Data represent mean values and standard errors of three independent experimental series. **Indicate differences significant at P ≤ 0.01 based on a Student’s t test.
