Fig. 7From: RRNPP-type quorum-sensing systems regulate solvent formation, sporulation and cell motility in Clostridium saccharoperbutylacetonicumCell sporulation efficiencies (a) and transcriptional analyses of spo0A (Cspa_c27540) using qRT-PCR in N1-4 (HMT) and various mutants (b). Bacterial RNAs were extracted from the cell culture after 24 h cultivation in PG medium. The reported value is mean ± SD. The asterisk indicates that the corresponding gene expression level in that particular strain was significantly different from the control strain N1-4 (HMT) (P < 0.05)Back to article page