FIRST REPORT OF CHARCOAL ROT (Macrophomina sp.) ON PEANUT SEEDS IN PARÁ, BRAZIL

Authors

DOI:

https://doi.org/10.36725/agries.v11i2.10764

Keywords:

fungal disease, health monitoring, preventive management

Abstract

A fungal disease was observed in peanut seeds in Conceição do Araguaia, Pará state, in April 2024. The
infected seeds initially exhibited a blackened and grayish appearance, which eventually led to their death.
Morphological characteristics of colonies and spores grown on PDA medium indicated that the fungal isolate
belonged to the genus Macrophomina sp. A seed health test and a seed-to-seedling transmissibility test were
performed, each using 400 peanut seeds (cv. Tatu-Vermelho, Caiapó, BRS 151 L-7, and BR-1). The results
from both tests confirmed the presence of the Macrophomina fungus in the analyzed seeds and plants, which
displayed symptoms of charcoal rot disease. A pathogenicity test was successfully conducted on peanut plants of the Tatu-Vermelho cultivar using a completely randomized design with three replicates. Symptoms
appeared two days after inoculation, and the pathogen was confirmed according to Koch's Postulates. These
findings underscore the importance of seed health monitoring, which contributes to preventative management strategies and ultimately promotes more productive crops.

Author Biographies

  • Rosilene da Costa Porto de Carvalho, Universidade Federal do Tocantins/Doutoranda

    Doutoranda em Produção Vegetal pela Universidade Federal do Tocantins.

  • Vitória Beatriz Silva, Universidade Federal do Tocantins/Mestranda

    Mestranda em Biotecnlogia pela Universidade Federal do Tocantins,

  • Paulo Ricardo de Sena Fernandes, Universidade Federal do Tocantins/Doutorando

    Doutorando em Produção Vegetal pela Universidade Federal Tocantins.

  • Dalmarcia de Souza Carlos Mourão, Federal University of Tocantins

    Doutora em Produção Vegetal pela Universidade Federal do Tocantins,

  • Cibelle Christine Brito Ferreira, UNITINS/Professor

    Doutora em Produção Vegetal. Professora da Universidade Estadual do Tocantins (UNITINS).

  • Gil Rodrigues dos Santos, Universidade Federal do Tocantins/Professor

    Doutor em Fitopatologia, professor da Universidade Federal do Tocantins.

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Published

2025-10-24

Issue

Vol. 11 No. 2 (2025): SCIENTIFIC AND TECHNOLOGICAL INITIATION IN THE LEGAL AMAZON: ADVANCES IN AGRICULTURAL SCIENCES AND BIODIVERSITY

Section

Scientific Note

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How to Cite

FIRST REPORT OF CHARCOAL ROT (Macrophomina sp.) ON PEANUT SEEDS IN PARÁ, BRAZIL. (2025). AGRI-ENVIRONMENTAL SCIENCES, 11(2), 7. https://doi.org/10.36725/agries.v11i2.10764

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