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<p>Gray mold, caused by <i>Botrytis cinerea</i>, is a primary disease affecting rose production and leads to significant post-harvest losses. This study evaluated the potential of seven bacterial species to control <i>B. cinerea</i> and extend the post-harvest longevity of cut roses. <i>In vitro</i> tests assessed the production of diffusible and volatile antifungal metabolites. Four strains (<i>Bacillus acidiceler, Bacillus subtilis, Bacillus pumilus</i>, and <i>Staphylococcus equorum</i>) were selected based on their efficacy and applied to roses of the cultivar “Tonight” at harvest. Roses treated with bacteria were inoculated with <i>B. cinerea</i> to evaluate disease control and stem durability. <i>B. acidiceler, B. subtilis,</i> and <i>B. pumilus</i> effectively suppressed disease symptoms and increased floral stem durability by up to two days compared to controls. Scanning electron microscopy revealed pathogen inhibition through bacterial colonization and petal biofilm formation. This study highlights the potential of beneficial bacteria as sustainable alternatives to chemical fungicides for post-harvest disease management in roses.</p>

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Beauty to last: bacillus spp. enhance durability and reduce post-harvest rot by botrytis cinerea in cut roses

  • 期刊论文

  • 发表日期：

    2025年8月2日

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  • Neílton Antônio Fiusa Araújo,
  • Victor Hugo Buttrós,
  • Drucylla Guerra Mattos,
  • Vytoria Piscitelli Cavalcanti,
  • Eduardo Alves,
  • Moacir Pasqual,
  • Rosane Freitas Schwan,
  • Itamar Soares de Melo,
  • Joyce Dória

摘要

Gray mold, caused by Botrytis cinerea, is a primary disease affecting rose production and leads to significant post-harvest losses. This study evaluated the potential of seven bacterial species to control B. cinerea and extend the post-harvest longevity of cut roses. In vitro tests assessed the production of diffusible and volatile antifungal metabolites. Four strains (Bacillus acidiceler, Bacillus subtilis, Bacillus pumilus, and Staphylococcus equorum) were selected based on their efficacy and applied to roses of the cultivar “Tonight” at harvest. Roses treated with bacteria were inoculated with B. cinerea to evaluate disease control and stem durability. B. acidiceler, B. subtilis, and B. pumilus effectively suppressed disease symptoms and increased floral stem durability by up to two days compared to controls. Scanning electron microscopy revealed pathogen inhibition through bacterial colonization and petal biofilm formation. This study highlights the potential of beneficial bacteria as sustainable alternatives to chemical fungicides for post-harvest disease management in roses.