TABLE 2.

The antimicrobial activity of a mixture of five terpene compounds against Phytophthora capsici infection according to their concentrations in the rhizosphere soil of fennel.

			Inhibition ratio (%)
Concentration	Compound	Chemotaxis	Zoospore motility	Cystospore germination	Hyphal growth	Ratio of zoospore rupture (%)
× 1 (1 time)	D-limonene	0.71 ± 0.12a	45.86 ± 1.23b	21.85 ± 9.22c	27.22 ± 4.12a	4.67 ± 1.62b
	Estragole	0.85 ± 0.08a	36.79 ± 3.50c	28.51 ± 1.72b	30.32 ± 5.90a	4.89 ± 2.00b
	Anethole	0.57 ± 0.14a	41.69 ± 1.63b	41.14 ± 8.49ab	49.18 ± 9.73a	7.92 ± 1.28b
	gamma-Terpinene	0.95 ± 0.47a	44.42 ± 1.80b	28.01 ± 14.36ab	56.91 ± 5.14a	0.58 ± 0.66b
	beta-Myrcene	1.01 ± 0.40a	34.1 ± 2.18b	18.85 ± 2.06c	34.97 ± 12.05a	3.97 ± 1.16b
	1 × MTC	1.00 ± 0.35a	100 ± 0a	64.88 ± 9.41a	51.73 ± 1.11a	89.43 ± 1.32a
× 2 (2 times)	D-limonene	1.41 ± 0.23a	44.175 ± 1.18b	30.31 ± 5.38c	51.18 ± 7.11a	6.79 ± 2.46b
	Estragole	1.04 ± 0.36b	39.0 ± 1.91bcd	65.02 ± 8.00ab	64.59 ± 2.00a	1.84 ± 1.24b
	Anethole	0.36 ± 0.06ab	34.82 ± 1.03cd	46.26 ± 3.61bc	72.95 ± 8.84a	7.23 ± 3.27b
	gamma-Terpinene	0.86 ± 0.35ab	34.1 ± 2.38d	36.40 ± 2.99c	50.38 ± 6.82a	6.62 ± 2.65b
	beta-Myrcene	0.81 ± 0.29ab	40.8 ± 2.81bc	25.55 ± 3.57d	38.71 ± 8.30a	7.84 ± 2.84b
	2 × MTC	1.38 ± 0.17a	100 ± 0a	83.80 ± 11.46a	69.67 ± 14.11a	98.85 ± 0.94a

1 × MTC and 2 × MTC indicate that the concentrations of the mixture were 1 and 2 times the rhizosphere soil concentrations, respectively (mixture = 6.13 μg/mL beta-myrcene + 67.48 μg/mL D-limonene + 66.30 μg/mL gamma-terpinene + 13.54 μg/mL estragole + 18.30 μg/mL anethole).

Different letters in the same group indicate significant differences as determined by one-way ANOVA (p < 0.05).

The error bars indicate the standard errors of the means (n = 3).