{
  "abstract": "Background: A new cassava disease outbreak was identified in indigenous communities in Oiapoque, Amapá, Brazil, characterized by stunting, proliferation of thin shoots, broom-like leaf formations, and apical dieback. These symptoms are consistent with Cassava Witches' Broom Disease (CWBD), previously reported in other regions of South America and Asia. Methods: Metagenomic profiling, molecular diagnostics, phylogenetic analyses, and multilocus genotyping were used to investigate microbial communities associated with symptomatic cassava plants. Results: Rhizoctonia (Ceratobasidium) theobromae was identified as the predominant fungal species associated with symptomatic plants. Genetic analyses indicated a close relationship between Brazilian isolates and Asian reference strains, suggesting a possible transcontinental introduction and supporting an association between R. theobromae and CWBD. This represents the first confirmed report of R. theobromae in Brazil, expanding its known geographic distribution in the Americas. Conclusion: The detection of this quarantine pathogen represents a potential threat to cassava production, food security, and preservation of indigenous cassava landraces in Brazil. These findings reinforce the need for surveillance, phytosanitary measures, and further studies on emerging fungal pathogens associated with cassava diseases.",
  "abstract_shown": true,
  "affiliations": [
    "Deutsche Sammlung von Mikroorganismen und Zellkulturen (DSMZ), Inhoffenstraße 7B, 38124 Braunschweig, Germany",
    "Embrapa Mandioca e Fruticultura, Rua Embrapa, s/n, Centro, 44380000 Cruz das Almas, Brazil",
    "Embrapa Pecuária Sul, BR 153 Km 633 Vila Industrial, 96401970 Bagé, Brazil",
    "Embrapa Amapá, Rodovia Josmar Chaves Pinto, Km-5 n.2600, 68903419 Macapá, Brazil",
    "Embrapa Pesca e Aquicultura, Avenida ‘NS 10’ com a ‘LO 18’, Loteamento Água Fria 77008900 Palmas, Brazil"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 9,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Saulo Alves Santos de Oliveira",
      "orcid": "0000-0002-2992-1570"
    },
    {
      "affs": [
        0
      ],
      "name": "Samar Sheat",
      "orcid": "0000-0002-5649-7795"
    },
    {
      "affs": [
        0
      ],
      "name": "Paolo Margaria",
      "orcid": "0000-0001-8670-1331"
    },
    {
      "affs": [
        2
      ],
      "name": "Adilson Lopes Lima",
      "orcid": "0000-0002-3506-7059"
    },
    {
      "affs": [
        3
      ],
      "name": "Jackson de Araujo dos Santos",
      "orcid": "0000-0002-8863-3368"
    },
    {
      "affs": [
        4
      ],
      "name": "H. S. Rocha",
      "orcid": "0000-0003-4826-8113"
    },
    {
      "affs": [
        1
      ],
      "name": "Helton Fleck Silveira",
      "orcid": "0009-0003-3107-9807"
    },
    {
      "affs": [
        3
      ],
      "name": "Cristiane Ramos de Jesus",
      "orcid": "0000-0002-9984-438X"
    },
    {
      "affs": [
        0
      ],
      "name": "Stephan Winter",
      "orcid": "0000-0003-0309-9934"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1rfxmcv9kpzkr.bib",
  "cited_by": 9,
  "doi": "10.3389/fpls.2026.1799146",
  "fulltext_url": null,
  "id": "1rfxmcv9kpzkr",
  "issns": [
    "1664-462X"
  ],
  "landing_url": "https://doi.org/10.3389/fpls.2026.1799146",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "1110|Plant Pathogens and Fungal Diseases"
    ]
  ],
  "openalex": "W7162655919",
  "pdf_url": "https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2026.1799146/pdf",
  "pmcid": "PMC13253821",
  "pmid": "42293010",
  "published": "2026-05-28",
  "publisher": "Frontiers Media",
  "ris": "https://research.draconitic.com/paper/1rfxmcv9kpzkr.ris",
  "sources": [
    {
      "first_seen": "2026-11-07T13:20:50Z",
      "native_id": "W7162655919",
      "source": "openalex",
      "url": "https://doi.org/10.3389/fpls.2026.1799146"
    }
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  "subjects": [
    {
      "field": "biology",
      "origin": "openalex:1110|Plant Pathogens and Fungal Diseases",
      "subfield": "plant-biology"
    }
  ],
  "title": "Association of Rhizoctonia theobromae with cassava witches’ broom outbreak in Brazil and genetic relatedness to Southeast Asian isolates",
  "title_text": "Association of Rhizoctonia theobromae with cassava witches’ broom outbreak in Brazil and genetic relatedness to Southeast Asian isolates",
  "type": "peer-reviewed",
  "updated_at": "2026-11-09T13:21:08Z",
  "url": "https://research.draconitic.com/paper/1rfxmcv9kpzkr",
  "venue": "Frontiers in Plant Science",
  "versions": []
}