Figure 2.

Micrographs depicting hyphal development of C. cinerea in the observation chamber and corresponding changes in the pseudo-colours of hyphal-bound Synechocystis sp. PCC6803_peripHlu pH bioreporter cells. The pseudo-colours refer to the overlay of two pH-dependent emission signals (R_I475/I395). (a) Hyphal development at t = 18 h and most pH bioreporters show a pseudo-colour of magenta (pH ~ 6.3). (b) Hyphal development at t = 25 h and most pH bioreporters show a pseudo-colour of red (pH ~ 5.0). For better visibility, the contours of microchannels are marked by white lines.