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<p><i>Rhizoctonia solani</i>, a necrotrophic fungus with a wide host range, is responsible for various diseases on beans. Precise identification of <i>R. solani</i> is necessary for designing effective disease management strategies. In 2019, bean plants suspected to infection with <i>R. solani</i> were collected from farms in Fars and Razavi Khorasan provinces in Iran. The pathogen was identified as <i>R. solani</i> AG-11 based on morphological and molecular characteristics, and subsequently assessed for its pathogenicity, enzymatic activity, and the correlation between these factors. The isolates displayed different levels of virulence on Yaghoot beans, and Koch’s postulates were verified. Cellulase and pectinase activities were positively correlated with their pathogenicity. This research is the first worldwide report of <i>R. solani</i> AG-11 as a pathogen on bean plants, as well as investigation of its pathogenicity and enzymatic activity.</p>

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First report of Rhizoctonia solani AG-11 from Phaseolus vulgaris in Iran

  • 期刊论文

  • 发表日期：

    2026年5月6日

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  • Behnaz Bagherieh,
  • Parissa Taheri

摘要

Rhizoctonia solani, a necrotrophic fungus with a wide host range, is responsible for various diseases on beans. Precise identification of R. solani is necessary for designing effective disease management strategies. In 2019, bean plants suspected to infection with R. solani were collected from farms in Fars and Razavi Khorasan provinces in Iran. The pathogen was identified as R. solani AG-11 based on morphological and molecular characteristics, and subsequently assessed for its pathogenicity, enzymatic activity, and the correlation between these factors. The isolates displayed different levels of virulence on Yaghoot beans, and Koch’s postulates were verified. Cellulase and pectinase activities were positively correlated with their pathogenicity. This research is the first worldwide report of R. solani AG-11 as a pathogen on bean plants, as well as investigation of its pathogenicity and enzymatic activity.