Figure 3: Dry weight of P. euphratica suspension cell cultures after incubation for 20 min at 25°C (◊), 35°C (○), 45°C (■), 55°C (□), and 65°C (⬤) and recovery at 25°C, over a total period of 18 days. Heat treatment (HT) was performed in the middle of exponential growth phase (day 5).