Table 2.

Effects of PA on Fon Spore production.

Treatment	Spore production inhibition
	Number of spore (106 cfu·ml−1)	Toxicity regression equation	R2	EC50/mM L−1
0 mM PA (Control)	1.84 ± 0.15a	Y = 0.64x-0.34	0.864	0.296
0.25 mM PA	0.92 ± 0.08b
0.5 mM PA	0.85 ± 0.04b
1 mM PA	0.71 ± 0.04c
2 mM PA	0.52 ± 0.06d

Letters indicate values (means ± SE, n = 3) with significant differences within the same column (P < 0.05, Duncan’s multiple range test).