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CHENG Luyao, LUO Xulu, YANG Xiaoqin, et al. Agroforestry-pathogenic Inhibitory Activities of the Endophytic Fungi from the Roots of Vaccinium dunalianum[J]. JOURNAL OF YUNNAN AGRICULTURAL UNIVERSITY（Natural Science）, 2025, 40(2): 1-8. DOI: 10.12101/j.issn.1004-390X(n).202302043
Citation: CHENG Luyao, LUO Xulu, YANG Xiaoqin, et al. Agroforestry-pathogenic Inhibitory Activities of the Endophytic Fungi from the Roots of Vaccinium dunalianum[J]. JOURNAL OF YUNNAN AGRICULTURAL UNIVERSITY（Natural Science）, 2025, 40(2): 1-8. DOI: 10.12101/j.issn.1004-390X(n).202302043
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Agroforestry-pathogenic Inhibitory Activities of the Endophytic Fungi from the Roots of Vaccinium dunalianum

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    • Abstract
  • Purpose To screen endophytic fungi from Vaccinium dunalianum roots with inhibitory activities against agroforestry pathogens, providing a reference for their development and utilization in biological control.
    Methods Two wood-decaying fungi and five pathogenic fungi were used as indicator strains, the inhibitory activities of 30 endophytic fungi were determined by confrontation culture method.
    Results Two endophytic strains (Fusarium proliferatum, VDGF-9; Umbelopsis dimorpha, VDGF-151) showed a stronger inhibitory effect on Coriolus versicolor, with inhibition rates of 75.0% and 76.2%, respectively. A total of 28 endophytic strains had stronger or strong inhibitory effect on Gloeophyllum trabeum, among which Trichoderma virens (VDGF-85) and Penicillium pinophilum (VDGF-806) displayed the most significant inhibitory activity with an inhibition rate of 94.1%, followed by P. vasconiae (VDGF-1, 92.9%), Phialocephala fortinii (VDGF-210, 92.9%), P. virgatum (VDGF-38, 91.8%), Pezicula radicicola (VDGF-111, 91.8%), T. harzianum (VDGF-811, 91.8%) and T. viridescens (VDGF-44, 91.0%) strains. Moreover, 17 endophytic fungi had stronger or strong antagonistic effect on F. solani, with VDGF-44 as the most active strains, which inhibition rate was 88.0%. There were 16 endophytic strains showed stronger or strong inhibitory effect against F. graminearum, of which endophytic F. oxysporum (VDGF-49) was the most significant active strain with inhibition rate of 88.0%. In addition, there were 19 strains against Botrytis cinerea, 22 strains against F. oxysporum, and 27 strains against Alternaria brassicicola, among which, the endophytic F. solani (VDGF-122, with inhibition rate of 91.3% on B. cinerea), P. cluniae and Lopgiostoma chamaecyparidis (VDGF-106 and VDGF-223, with inhibition rate of 84.6% on F. oxysporum), and VDGF-811 (with inhibition rate of 92.2% on A. brassicicola) were the most significant active strains, respectively.
    Conclusion The 30 endophytic fungi isolated from the roots of V. dunalianum have strong inhibitory activities against the tested agroforestry pathogens.
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