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<p>Tea plantations of Assam are distinctive agroecosystems where shade trees play a vital role in maintaining soil fertility, stabilizing the microclimate and microbial diversity. This present study explores the diversity and colonization patterns of Vesicular Arbuscular Mycorrhizal fungi associated with the roots of major shade tree species across some important tea gardens of Dibrugarh district, India. Root samples from <i>Albizia, Acacia,</i> and <i>Derris</i> species were analyzed using standard staining technique. Quantitative analysis revealed the presence of both arbuscular and vesicular structures with colonization ranging from 27.59% to 70.37%. <i>Albizia odoratissima</i> exhibited the greatest colonization and spore density, indicating a strong symbiosis beneficial for soil nutrient cycling. Our findings&#xa0;reveal clear species-dependent variation in mycorrhizal colonization and highlight the ecological significance of native leguminous shade trees in sustaining the microbial balance of tea agroecosystems. Our findings provide baseline information for the selection of shade species with a strong symbiotic efficiency, contributing to the sustainable management and productivity of tea gardens.</p>

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Diversity and Root Colonization of Vesicular Arbuscular Mycorrhiza (VAM) in Leguminous Shade Trees of Tea Ecosystems

  • 期刊论文

  • 发表日期：

    2025年12月6日

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  • Tarpana Bhagawati,
  • Rajesh Kumar Shah

摘要

Tea plantations of Assam are distinctive agroecosystems where shade trees play a vital role in maintaining soil fertility, stabilizing the microclimate and microbial diversity. This present study explores the diversity and colonization patterns of Vesicular Arbuscular Mycorrhizal fungi associated with the roots of major shade tree species across some important tea gardens of Dibrugarh district, India. Root samples from Albizia, Acacia, and Derris species were analyzed using standard staining technique. Quantitative analysis revealed the presence of both arbuscular and vesicular structures with colonization ranging from 27.59% to 70.37%. Albizia odoratissima exhibited the greatest colonization and spore density, indicating a strong symbiosis beneficial for soil nutrient cycling. Our findings reveal clear species-dependent variation in mycorrhizal colonization and highlight the ecological significance of native leguminous shade trees in sustaining the microbial balance of tea agroecosystems. Our findings provide baseline information for the selection of shade species with a strong symbiotic efficiency, contributing to the sustainable management and productivity of tea gardens.