Figure 6.

Selective blocking of Ca²⁺ stretch-activated channels. (a) Diatoms were kept in dark for more than 2 day/night cycles. The black trace of the current recording depicts the current fluctuations at the start of the experiment. The red trace is obtained after adding the inhibitor GdCl₃ to the culture medium up to a concentration of 100 μM. (b) Data quantification recorded over 3 experiments. Current spikes were counted 45 minutes before, called control, and after adding the inhibitor, called GdCl₃. (c) Cell viability in percentage upon exposure for 24 hours to different concentrations of GdCl₃; at 100 μM there is no impact on cell viability.