Table 1. Concentration of volatile oils and their eight principal components after 20 days’ treatment by different components of AL12^a.

Volatile oil (μg.g−1 DW)	Control	Component A	Component B	Component C	Purified EPS
β-Caryophyllene	31.25 ± 1.28 a	29.33 ± 1.35 a	32.02 ± 1.28 a	26.45 ± 1.21 a	24.15 ± 1.19 a
Zingiberene	21.75 ± 0.93 b	12.38 ± 0.37 a	20.67 ± 0.60 a	9.16 ± 0.38 a	6.24 ± 0.27 a
β-Sesquiphellandrene	15.69 ± 0.78 b	13.59 ± 0.39 a	16.12 ± 0.64 b	12.55 ± 0.49 a	10.03 ± 0.41 a
Caryophyllene oxide	18.06 ± 1.02 a	28.92 ± 1.21 a	19.21 ± 0.75 a	35.63 ± 1.50 b	42.71 ± 1.62 b
Hinesol	52.45 ± 2.28 a	143.76 ± 5.48 a	63.94 ± 2.24 b	148.14 ± 4.94 b	155.07 ± 5.06 a
β-Eudesmol	99.83 ± 4.96 a	221.47 ± 9.70 a	105.77 ± 4.34 a	230.60 ± 10.08 a	248.93 ± 10.13 a
Atractylone	5.57 ± 0.21 a	21.67 ± 1.07 a	7.22 ± 0.28 a	32.41 ± 1.36 a	35.41 ± 1.42 a
Atractylodin	138.96 ± 5.87 a	139.47 ± 5.30 b	141.56 ± 5.38 a	152.58 ± 5.80 b	162.73 ± 6.17 b
Total essential oils	383.56 ± 15.26 a	610.59 ± 21.37 a	406.51 ± 16.67 a	647.52 ± 27.20 a	685.27 ± 24.38 a

^aValues are means from three biological replicates with the corresponding standard deviations. Values followed by different lowercase letters are significantly different according to Tukey’s multiple-comparison test. Control was the experimental group that was not treated with any component. Component A was the sterilized crude mycelium of AL12, Component B was the chitinase and β-1,3-glucanase hydrolyzed cell wall products of AL12, and Component C was the crude extracellular polysaccharides derived from the AL12 fermentation broth. Purified EPS was purified Component C.