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<p>During recent survey for the investigation of foliar fungi in Kerala, India, a new species of foliicolous hyphomycete, <i>Paramyrothecium kamalii</i> was discovered on living leaves of <i>Matourea azurea</i> (<i>Plantaginaceae</i>) based on morpho-cultural characteristics and multigene (ITS, LSU, <i>cmdA</i>,<i> tub2</i>, and <i>rpb2</i>) phylogenetic analysis; is described, illustrated and discussed. In vitro Pathogenicity tests were performed and confirmed the pathogenic nature of the fungus, thereby fulfilling Koch’s postulates. Phylogenetically, <i>P. kamalii</i> forms a distinct clade, closely related to <i>P. verroridum</i>,<i> P. indicum</i>, and <i>P. roridum</i>. However, it differs morphologically by having longer conidiophores and conidia and lacks setae, unlike the closer species. The identification of <i>P. kamalii</i> as a new foliar pathogen provides critical insights for surveillance and effective control measure of this foliar disease of <i>M. azurea</i> in tropical ecosystems.</p>

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Unveiling Paramyrothecium kamalii (Stachybotryaceae) as a novel foliar fungal pathogen on Matourea azurea in Kerala, India, based on morpho-cultural, pathological and molecular phylogenetic evidences

  • 期刊论文

  • 发表日期：

    2025年1月24日

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  • Shambhu Kumar,
  • K. B. Farsana,
  • K. T. Mufeeda,
  • Raghvendra Singh,
  • S. Mahadevakumar

摘要

During recent survey for the investigation of foliar fungi in Kerala, India, a new species of foliicolous hyphomycete, Paramyrothecium kamalii was discovered on living leaves of Matourea azurea (Plantaginaceae) based on morpho-cultural characteristics and multigene (ITS, LSU, cmdA, tub2, and rpb2) phylogenetic analysis; is described, illustrated and discussed. In vitro Pathogenicity tests were performed and confirmed the pathogenic nature of the fungus, thereby fulfilling Koch’s postulates. Phylogenetically, P. kamalii forms a distinct clade, closely related to P. verroridum, P. indicum, and P. roridum. However, it differs morphologically by having longer conidiophores and conidia and lacks setae, unlike the closer species. The identification of P. kamalii as a new foliar pathogen provides critical insights for surveillance and effective control measure of this foliar disease of M. azurea in tropical ecosystems.