TABLE 5.

Efficiency of sporulation of B. subtilis strains carrying sipV and sipT mutations^a

Strain	Relevant genotype	Viable cell count ml−1	Spore count ml−1	Percentageb
JH642	Wild type	2.9 × 108	1.3 × 108	44.8
JH22097	sipT	3.0 × 108	1.5 × 108	50.0
JH22098	sipV	2.4 × 108	1.1 × 108	45.8
JH22108	sipT sipV	2.5 × 107	9.0 × 105	3.6
JH11783	sipT sipV rapA	1.1 × 107	2.5 × 105	2.3
JH11784	sipT sipV spo0F (Y13S)	4.6 × 107	9.0 × 105	1.9
JH11435	spo0F (Y13S)	3.1 × 108	1.7 × 108	54.8
JH12834	rapA	2.1 × 108	1.2 × 108	57.1

^aData are representative of results from two independent experiments. Cells were grown for 24 h in Schaeffer's sporulation medium.

^bCalculated as the ratio between the number of spores and the viable cell count.