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<p>A new leaf spot disease in <i>Bauhinia purpurea</i> tree was detected in Kerala Agricultural University Campus, Thrissur, Kerala state, India. The foliar pathogen was isolated on Potato Dextrose Agar (PDA) medium after surface sterilizing the leaf bits with 0.1% mercuric chloride. The inoculated plates were incubated at room temperature (25&#xa0;°C). Koch’s postulates were fulfilled, and the pathogen was identified as <i>Colletotrichum siamense</i> based on morphological and cultural characteristics, along with multi-gene phylogenetic analysis. Ecological and pathological significance of emerging fungal pathogens within tree-pathogen systems deserve research focus.</p>

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First report of leaf spot caused by Colletotrichum siamense on Bauhinia purpurea from India

  • 期刊论文

  • 发表日期：

    2025年8月30日

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  • Melethil Ajay,
  • Mohan Kiran,
  • Abdulvahab Muhammed Iqbal,
  • Raj Arun,
  • Shambhu Kumar,
  • Kalathil Thodi Mufeeda,
  • Shivannegowda Mahadevakumar,
  • Kunnapillil Surendran Aneesh,
  • Sukumaran Nair Gopakumar

摘要

A new leaf spot disease in Bauhinia purpurea tree was detected in Kerala Agricultural University Campus, Thrissur, Kerala state, India. The foliar pathogen was isolated on Potato Dextrose Agar (PDA) medium after surface sterilizing the leaf bits with 0.1% mercuric chloride. The inoculated plates were incubated at room temperature (25 °C). Koch’s postulates were fulfilled, and the pathogen was identified as Colletotrichum siamense based on morphological and cultural characteristics, along with multi-gene phylogenetic analysis. Ecological and pathological significance of emerging fungal pathogens within tree-pathogen systems deserve research focus.