TABLE 1.

B. subtilis strains used

Strain	Genotype	Phenotype	Source
PS766a	[pDG298]	sigG under Pspac control	31
PS832a	Wild type	Laboratory stock	4
PY79b	trp	Wild type	34
IB1b	spoVT trp	spoVT	3
SC500b	sigG trp	Asporogenous	2

^aThe background is PS832.

^bThe background is PY79.