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<p>Drylands cover a significant portion of the Earth’s surface and play a key role in maintaining global ecological balance. The Caatinga, with its unique biodiversity adapted to the extreme conditions of this semi-arid region, offers a valuable opportunity to expand our knowledge about these ecosystems. Here, this work reveals the high microbial diversity in the soil and rhizosphere of the Caatinga, with the roots presenting more specialized communities. Bacteria such as <i>Bacilli</i>, <i>Alphaproteobacteria</i> and <i>Firmicutes</i> excelled in critical functions such as nutrient cycling. The Interplant differences suggested the influence of root exudates. Altogether, the metagenomic study of interactions between microorganisms in the rhizosphere of selected plants revealed microbial biodiversity and contributed to our understanding of nutrient cycling, plant growth and resistance to water stress. In addition, they demonstrate biotechnological potential to address global challenges such as desertification and food security.</p>

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The soil microbiome of the Caatinga drylands in Brazil

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年5月18日

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  • Luísa Mayumi Arake de Tacca,
  • Rayane Nunes Lima,
  • Marco Antônio de Oliveira,
  • Patrícia Verdugo Pascoal,
  • Deborah Bambil,
  • Grácia Maria Soares Rosinha,
  • Diana Signor,
  • Marcelo Freire,
  • Elibio Rech

摘要

Drylands cover a significant portion of the Earth’s surface and play a key role in maintaining global ecological balance. The Caatinga, with its unique biodiversity adapted to the extreme conditions of this semi-arid region, offers a valuable opportunity to expand our knowledge about these ecosystems. Here, this work reveals the high microbial diversity in the soil and rhizosphere of the Caatinga, with the roots presenting more specialized communities. Bacteria such as Bacilli, Alphaproteobacteria and Firmicutes excelled in critical functions such as nutrient cycling. The Interplant differences suggested the influence of root exudates. Altogether, the metagenomic study of interactions between microorganisms in the rhizosphere of selected plants revealed microbial biodiversity and contributed to our understanding of nutrient cycling, plant growth and resistance to water stress. In addition, they demonstrate biotechnological potential to address global challenges such as desertification and food security.