By adding 2 5 mL of Triton X-100 (5 mg L1) (SigmaeAldrich, USA) into sterile water, the concentration of the spore suspension was adjusted to about 106 spores per millilitre, as determined using a Thoma counting chamber.
Byadding 2 5 mL of Triton X-100 (5 mg L1) (SigmaeAldrich, USA)into sterile water, the concentration of the spore suspension wasadjusted to about 106 spores per millilitre, as determined using aThoma counting chamber.