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<p><i>Taxus contorta</i> is an important medicinal conifer of the northwestern Himalaya. It often occurs in mixed conifer temperate forests.<i> Taxus</i> species primarily establish symbiotic relationship with arbuscular mycorrhizal fungi; however, there are reports of its association with ectomycorrhizal fungi also, although these remain largely unexplored. In this study, we investigated the community structure of ectomycorrhizal sporocarps in the dripline area of <i>T. contorta</i>, along with tree community structure and soil characteristics of the forests. The study was conducted in three forests with a substantial population of <i>T. contorta</i>. Sporocarps of ectomycorrhizal fungi growing in the dripline area of <i>T. contorta</i> were collected over two years in different seasons and identified into 25 species, belonging to 12 genera. The genus <i>Russula</i> was the most dominant, characterized by highest richness (5 species) and highest Importance Value Index (92.7). Ectomycorrhizal sporocarp community composition was found to be influenced by soil organic carbon, available nitrogen, altitude, and most importantly the dominant tree species of the forest. The study established a foundation for understanding the diversity of ectomycorrhizal fungal diversity growing in the dripline area of <i>T. contorta</i>, along with tree community structure and composition, and soil properties of its natural habitat, which may contribute to the development of conservation and restoration strategies for this endangered conifer.</p>

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Community composition of aboveground ectomycorrhizal fungi in the dripline area of Taxus contorta Griff. in mixed coniferous forests of Northwest Himalaya

  • 期刊论文

  • 发表日期：

    2025年2月14日

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  • Neha Sharma,
  • Ashwani Tapwal,
  • Dushyant Kumar

摘要

Taxus contorta is an important medicinal conifer of the northwestern Himalaya. It often occurs in mixed conifer temperate forests. Taxus species primarily establish symbiotic relationship with arbuscular mycorrhizal fungi; however, there are reports of its association with ectomycorrhizal fungi also, although these remain largely unexplored. In this study, we investigated the community structure of ectomycorrhizal sporocarps in the dripline area of T. contorta, along with tree community structure and soil characteristics of the forests. The study was conducted in three forests with a substantial population of T. contorta. Sporocarps of ectomycorrhizal fungi growing in the dripline area of T. contorta were collected over two years in different seasons and identified into 25 species, belonging to 12 genera. The genus Russula was the most dominant, characterized by highest richness (5 species) and highest Importance Value Index (92.7). Ectomycorrhizal sporocarp community composition was found to be influenced by soil organic carbon, available nitrogen, altitude, and most importantly the dominant tree species of the forest. The study established a foundation for understanding the diversity of ectomycorrhizal fungal diversity growing in the dripline area of T. contorta, along with tree community structure and composition, and soil properties of its natural habitat, which may contribute to the development of conservation and restoration strategies for this endangered conifer.