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<p><i>Fusicladium eriobotryae</i>, the causal agent of loquat scab, can cause yield losses of over 50% in loquat (<i>Eriobotrya japonica</i>) by infecting leaves, young twigs and fruits; however, scarce knowledge exists as regards the causal agent of loquat scab. This study aimed to characterize the causal agent of loquat scab by conducting <i>in vitro</i> and <i>in vivo</i> experiments. Using the single-spore isolation technique, three fungal colonies were isolated from loquat-producing locations in the Mediterranean region of Türkiye. The isolated fungi were identified as <i>F</i>.&#xa0;<i>eriobotryae</i> based on morphological and molecular data. Colony growths were assessed with temperature and growth medium tests <i>in vitro</i>. Two different inoculation methods were used in pathogenicity tests <i>in vivo </i>and disease severities of the isolates were quantified. Significant (<i>P</i> &lt; 0.01) differences were found in colony growths of <i>F</i>.&#xa0;<i>eriobotryae</i> isolates. The highest and lowest colony growths were detected at 20 °C and 5 °C, respectively, but no colony growth occurred at 30 °C. The highest colony growths of the isolates were on potato dextrose agar, loquat leaf extract agar and malt extract agar. <i>F</i>.&#xa0;<i>eriobotryae</i> isolate MA3 had the highest disease severity, followed by the isolates MA4 and MA2, respectively. All the isolates were re-isolated from leaf spots and twig lesions of the inoculated seedlings, confirming their pathogenicity. To the best of our knowledge, this is the first record of <i>F</i>.&#xa0;<i>eriobotryae</i> isolates causing loquat scab in Türkiye. The findings will provide new knowledge regarding loquat scab and contribute to the epidemiology of <i>F</i>.&#xa0;<i>eriobotryae</i>.</p>

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Isolation and Identification of Fusicladium eriobotryae Isolates Associated with Loquat (Eriobotrya japonica) Scab in Türkiye

  • 期刊论文

  • 发表日期：

    2026年5月21日

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  • Mehmet Aydoğdu,
  • İlker Kurbetli,
  • Sirel Canpolat,
  • Tuğçe Selvi,
  • Senem Tülek

摘要

Fusicladium eriobotryae, the causal agent of loquat scab, can cause yield losses of over 50% in loquat (Eriobotrya japonica) by infecting leaves, young twigs and fruits; however, scarce knowledge exists as regards the causal agent of loquat scab. This study aimed to characterize the causal agent of loquat scab by conducting in vitro and in vivo experiments. Using the single-spore isolation technique, three fungal colonies were isolated from loquat-producing locations in the Mediterranean region of Türkiye. The isolated fungi were identified as F. eriobotryae based on morphological and molecular data. Colony growths were assessed with temperature and growth medium tests in vitro. Two different inoculation methods were used in pathogenicity tests in vivo and disease severities of the isolates were quantified. Significant (P < 0.01) differences were found in colony growths of F. eriobotryae isolates. The highest and lowest colony growths were detected at 20 °C and 5 °C, respectively, but no colony growth occurred at 30 °C. The highest colony growths of the isolates were on potato dextrose agar, loquat leaf extract agar and malt extract agar. F. eriobotryae isolate MA3 had the highest disease severity, followed by the isolates MA4 and MA2, respectively. All the isolates were re-isolated from leaf spots and twig lesions of the inoculated seedlings, confirming their pathogenicity. To the best of our knowledge, this is the first record of F. eriobotryae isolates causing loquat scab in Türkiye. The findings will provide new knowledge regarding loquat scab and contribute to the epidemiology of F. eriobotryae.