The objective of this study was to determine inhibitory activities of four volatile plant essential oils (cinnamon oil, fennel oil, origanum oil and thyme oil) on in vitro growth of Fusarium oxysporum f. sp. fragariae causing Fusarium wilt of strawberry plants. Results showed that these essential oils inhibited in vitro conidial germination and mycelial growth of F. oxysporum f. sp. fragariae in a dose-dependent manner. Cinnamon oil was found to be most effective one in suppressing conidial germination while fennel oil, origanum oil and thyme oil showed moderate inhibition of conidial germination at similar levels. Cinnamon oil, origanum oil and thyme oil showed moderate antifungal activities against mycelial growth at similar levels while fennel oil had relatively lower antifungal activity against mycelial growth. Antifungal effects of these four plant essential oils in different combinations on in vitro fungal growth were also evaluated. These essential oils demonstrated synergistic antifungal activities against conidial germination and mycelial growth of F. oxysporum f. sp. fragariae in vitro. Simultaneous application of origanum oil and thyme oil enhanced their antimicrobial activities against conidial germination and fungal mycelial growth. These results underpin that volatile plant essential oils could be used in eco-friendly integrated disease management of Fusarium wilt in strawberry fields.

中文翻译：

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四种植物精油对尖孢镰刀菌离体生长的差异抑制活性。sp。在草莓植株中引起枯萎病的草莓科植物。

这项研究的目的是确定四种挥发性植物精油（肉桂油，茴香油，牛至油和百里香油）对尖孢镰刀菌体外生长的抑制作用。sp。fragariae造成草莓植株枯萎病。结果表明，这些精油抑制了尖孢镰刀菌的体外分生孢子萌发和菌丝体生长。sp。草莓科以剂量依赖的方式。发现肉桂油是抑制分生孢子萌发的最有效方法，而茴香油，牛至精油和百里香精油在相似的水平上显示出中等程度的分生孢子萌发抑制作用。肉桂油，牛至油和百里香油对真菌的生长表现出中等程度的抗真菌活性，而茴香油对真菌的生长则具有较低的抗真菌活性。还评估了四种不同组合的植物精油对体外真菌生长的抗真菌作用。这些精油显示出对尖孢镰刀菌分生孢子萌发和菌丝生长的协同抗真菌活性。sp。草莓牛至油和百里香油的同时施用增强了其对分生孢子萌发和真菌菌丝生长的抗菌活性。这些结果表明，挥发性植物精油可用于草莓田枯萎病的生态友好型综合病害防治。