FIGURE 7.

Effects of deletion of the PilZ domain of the cellulose synthase Tll0007 on T. vulcanus cell aggregation at a relatively low temperature of 31 °C. Photographs of wild-type (WT) T. vulcanus, its Δtll0007 mutant (Δtll0007), and the mutant whose tll0007 lacks its PilZ domain (ΔpilZ) cultured at 31 °C for 3 days and then incubated for 30 min without bubbling in the dark. The cells were cultured with irradiation with blue or green light (5 μmol photons m⁻² s⁻¹) in addition to red light (30 μmol photons m⁻² s⁻¹), which was needed for photosynthetic growth.