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<p>The lesser pine shoot beetle (<i>Tomicus minor</i>) is an important pest of Scots pine (<i>Pinus sylvestris</i>) in Central Europe. Bark beetles are frequently associated with diverse fungal taxa, including ophiostomatoid fungi, entomopathogens, and saprotrophs, which can influence beetle biology and forest health. This study investigated the culturable fungal community associated with adult <i>T. minor</i> collected from declining <i>P. sylvestris</i> trees in western Slovakia. A total of 388 fungal isolates were obtained from 130 beetles. Based on morphological and molecular analyses (ITS, β-tubulin, and EF1-α), 20 fungal species from 12 genera and nine families were identified. The most frequently isolated taxa were <i>Cladosporium cladosporioides</i>, <i>Ophiostoma minus</i>, <i>Penicillium citreonigrum</i>, and <i>Lecanicillium fusisporum</i>. Entomopathogenic fungi accounted for 15.5% of all isolates, while ophiostomatoid species comprised 22.9%. Diversity indices (Shannon H = 2.4621, Simpson D = 0.1067) indicated moderate fungal diversity. <i>Sporothrix pseudoabietina</i> was newly recorded from <i>T. minor</i>. The results contribute to a better understanding of fungal assemblages associated with bark beetles and highlight the role of <i>T.&#xa0;minor</i> as a vector of diverse fungi in pine ecosystems.</p>

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Diversity of culturable fungi associated with Tomicus minor in Scots pine forests of western Slovakia

  • 期刊论文

  • 发表日期：

    2026年1月24日

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  • Katarína Pastirčáková,
  • Michaela Strmisková,
  • Marek Barta,
  • Miriam Kádasi Horáková

摘要

The lesser pine shoot beetle (Tomicus minor) is an important pest of Scots pine (Pinus sylvestris) in Central Europe. Bark beetles are frequently associated with diverse fungal taxa, including ophiostomatoid fungi, entomopathogens, and saprotrophs, which can influence beetle biology and forest health. This study investigated the culturable fungal community associated with adult T. minor collected from declining P. sylvestris trees in western Slovakia. A total of 388 fungal isolates were obtained from 130 beetles. Based on morphological and molecular analyses (ITS, β-tubulin, and EF1-α), 20 fungal species from 12 genera and nine families were identified. The most frequently isolated taxa were Cladosporium cladosporioides, Ophiostoma minus, Penicillium citreonigrum, and Lecanicillium fusisporum. Entomopathogenic fungi accounted for 15.5% of all isolates, while ophiostomatoid species comprised 22.9%. Diversity indices (Shannon H = 2.4621, Simpson D = 0.1067) indicated moderate fungal diversity. Sporothrix pseudoabietina was newly recorded from T. minor. The results contribute to a better understanding of fungal assemblages associated with bark beetles and highlight the role of T. minor as a vector of diverse fungi in pine ecosystems.