Antifungal Activity of 21 Natural Products Against Wheat Root Rot Fungus

doi:10.11924/j.issn.1000-6850.casb2020-0601

Abstract

Abstract:

This study aims at exploring biological control of wheat root rot, screening effective natural antifungal substances, and achieving the purpose of fungicide reduction. Using Fusarium graminearum, Pythium spinosum and Bipolaris sorokiniana as materials, the antifungal activities of 21 natural products were determined by mycelial growth method. The results showed that the trans-asarone and cis-asarone had significant effects on Fusarium graminearum, the EC₅₀ was 69.99 mg/L and 130.23 mg/L, respectively. Resveratrol, cis-asarone and lemon essential oil had obvious antifungal activity against Pythium spinosum, the EC₅₀ was 24.4683 mg/L, 71.02 mg/L and 79.83 mg/L, respectively. Eugenol and resveratrol had significant effects on Bipolaris sorokiniana, the EC₅₀ was 14.06 mg/L and 22.09 mg/L, respectively. Therefore, eugenol, trans-asarone, cis-asarone, lemon essential oil and resveratrol could effectively inhibit the pathogenic growth of wheat root rot, which have great potentials in biological control of wheat root rot.

Key words: wheat root rot, Fusarium graminearum, Pythium spinosum, Bipolaris sorokiniana, natural products, antifungal activity

CLC Number:

S482.2

Zhang Bo, Zhang Yueli, Ma Liguo, Qi Kai, Liu Ping, Li Changsong, Qi Junshan. Antifungal Activity of 21 Natural Products Against Wheat Root Rot Fungus[J]. Chinese Agricultural Science Bulletin, 2021, 37(24): 154-158.

Figures/Tables 8

References 26

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天然物质	回归方程	EC₅₀值/(mg/L)	相关系数
顺式细辛醚	y=2.7478+1.0650x	130.2344	0.9802
反式细辛醚	y=3.9786+0.5536x	69.9972	0.9373

天然物质	回归方程	EC₅₀值/(mg/L)	相关系数
顺式细辛醚	y=2.7478+1.0650x	130.2344	0.9802
反式细辛醚	y=3.9786+0.5536x	69.9972	0.9373

天然物质	回归方程	EC₅₀值/(mg/L)	相关系数
白藜芦醇	y =2.7864+1.5941 x	24.4683	0.9723
顺式细辛醚	y =3.1988+0.9729 x	71.0284	0.9793
柠檬精油	y =3.0242+1.0387 x	79.8388	0.9875

天然物质	回归方程	EC₅₀值/(mg/L)	相关系数
白藜芦醇	y =2.7864+1.5941 x	24.4683	0.9723
顺式细辛醚	y =3.1988+0.9729 x	71.0284	0.9793
柠檬精油	y =3.0242+1.0387 x	79.8388	0.9875

天然物质	回归方程	EC₅₀值/(mg/L)	相关系数
白藜芦醇	y =3.9531+0.7787 x	22.0968	0.9902
丁香酚油	y =4.1759+0.7178 x	14.0664	0.8885