Figure 1. Extracellular ATP levels in P. euphratica cells under NaCl stress.

Time courses of ATP release in response to high NaCl (200 mM), in the presence or absence of P2 receptor antagonists (suramin or PPADS, 300 μΜ) or an ATP trap (H-G system, 50 mM glucose and 100 units/mL hexokinase). Bars represent the means from five independent experiments and whiskers represent the error of the mean.