Figure 4
Deletion of ire-1 and hac-1 affects cell growth and causes cellulose utilization defects. (A) Comparison of radial growth phenotypes of ire-1 and hac-1 with their parental strain. Conidia (around 103) were dotted on minimal medium (MM) plates, grown for 72 h at 25°C. (B) The conidia of Δire-1 and Δhac-1 mutants fail to germinate under cellulolytic induction conditions (presence of Avicel as sole C-source). Pictures were taken after 36 h of culture; the irregular blocks in the images represent Avicel particles. The black bar indicates a length of 20 μm.