Biological Control of Fusarium acuminatum G3-23 on Plant Pathogenic Fungi

doi:10.16409/j.cnki.2095-039x.2025.02.077

Abstract

Abstract: This study aimed to identify biocontrol potential of endophytic fungal strains isolated from wheat against fungal plant pathogens. To identify highly antagonistic strains, a total of 368 wheat endophytic fungal strains were preliminarily screened using the dual culture method. The strains were identified through morphological and molecular phylogenetic analyses, and their biocontrol efficacy against various fungal plant pathogens was evaluated. Dual culture test results showed that Fusarium acuminatum strain G3-23, isolated from wheat roots, exhibited significant antagonistic activity against Bipolaris sorokiniana, B. maydis, F. graminearum and F. asiaticum, with inhibition rates exceeding 50.60%. Further bioassays confirmed that strain G3-23 effectively controlled Elymus leaf spot, maize leaf spot, and wheat Fusarium head blight, with a maximum biocontrol efficacy of 77.14%. Overall, this study reveals the broad-spectrum antifungal properties of F. acuminatum strain G3-23 as a biocontrol agent and provides a novel resource and theoretical basis for developing broad-spectrum biopesticides.

Key words: endophytic fungus, Fusarium acuminatum G3-23, leaf spot disease, Fusarium head blight, biological control

CLC Number:

S476

AN Qi, XIAO Junbo, Clement Nzabanita, SHENG Xueyuan, WANG Shuangchao, GUO Lihua, ZHAO Yan. Biological Control of Fusarium acuminatum G3-23 on Plant Pathogenic Fungi[J]. Chinese Journal of Biological Control, 2025, 41(6): 1452-1461.

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