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<p><i>Cladosporium anthropophilum</i> is recognized as a mycoparasite that is capable of suppressing plant pathogenic fungi. However, to date, there is little information about the impact of <i>C. anthropophilum</i> on powdery mildews. Based on morphological and molecular biological analyses, <i>C. anthropophilum</i> was identified and confirmed as a mycoparasite of the wheat powdery mildew fungus (<i>Blumeria graminis</i> f. sp. <i>tritici</i>, <i>Bgt,</i> recently reclarified as <i>B. graminis</i> <i>s</i>. <i>str</i>.). <i>C. anthropophilum</i> effectively inhibited the growth and spread of <i>Bgt</i> conidia. Inoculation with <i>C. anthropophilum</i> significantly reduced <i>Bgt</i> biomass by 1.4-, 2.4-, 3.4-, and 64.9-fold at two, four, six, and eight&#xa0;days post-inoculation, respectively, while the biomass of <i>C. anthropophilum</i> increased by 7.4-, 164.6-, 351.2-, and 305.5-fold at the corresponding time points. In vitro, <i>C. anthropophilum</i> exudates significantly impaired the formation of <i>Bgt</i> appressoria. Therefore, <i>C. anthropophilum</i> acts as a potential biocontrol agent by suppressing the growth, dispersal, and development of <i>Bgt</i> conidia, making it a viable alternative for managing wheat powdery mildew. These results demonstrate that <i>C. anthropophilum</i> is an antagonistic parasite of wheat powdery mildew and provide new insights into the management of plant pathogenic fungi.</p>

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Biocontrol action of Cladosporium anthropophilum against the wheat powdery mildew fungus Blumeria graminis f. sp. tritici

  • 期刊论文

  • 发表日期：

    2026年1月10日

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  • Sujing Zhao,
  • Ziyi Fan,
  • Juncong Liu,
  • Mo Zhu,
  • Zongbo Qiu

摘要

Cladosporium anthropophilum is recognized as a mycoparasite that is capable of suppressing plant pathogenic fungi. However, to date, there is little information about the impact of C. anthropophilum on powdery mildews. Based on morphological and molecular biological analyses, C. anthropophilum was identified and confirmed as a mycoparasite of the wheat powdery mildew fungus (Blumeria graminis f. sp. tritici, Bgt, recently reclarified as B. graminis s. str.). C. anthropophilum effectively inhibited the growth and spread of Bgt conidia. Inoculation with C. anthropophilum significantly reduced Bgt biomass by 1.4-, 2.4-, 3.4-, and 64.9-fold at two, four, six, and eight days post-inoculation, respectively, while the biomass of C. anthropophilum increased by 7.4-, 164.6-, 351.2-, and 305.5-fold at the corresponding time points. In vitro, C. anthropophilum exudates significantly impaired the formation of Bgt appressoria. Therefore, C. anthropophilum acts as a potential biocontrol agent by suppressing the growth, dispersal, and development of Bgt conidia, making it a viable alternative for managing wheat powdery mildew. These results demonstrate that C. anthropophilum is an antagonistic parasite of wheat powdery mildew and provide new insights into the management of plant pathogenic fungi.