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<p>Yeasts are widely used in the biological control of post-harvest diseases because of their effectiveness and environmental safety. These characteristics make them promising agents for the control of foliar diseases, offering a sustainable alternative to chemical treatments. From this perspective, this study aimed to evaluate the potential of yeasts for the biological control of anthracnose in <i>Phaseolus lunatus</i> using both in vitro and in vivo assays. A total of 42 strains were isolated from fruits and culms, all of which inhibited in vitro mycelial growth of the phytopathogenic fungus <i>Colletotrichum truncatum</i>. The association between in vitro assays and disease control in plants was assessed by selecting seven contrasting strains based on their inhibition percentage. The strains were molecularly identified, tested for the production of soluble and volatile inhibitory compounds, and evaluated for their interactions with both the pathogen and the host. The identified strains belonged to <i>Hanseniaspora uvarum</i>, <i>H. opuntiae</i>, <i>Lachancea thermotolerans</i>, <i>Pichia kudriavzevii</i>, and <i>Nakaseomyces glabratus</i>. The seven strains produced soluble and volatile compounds capable of inhibiting <i>C. truncatum </i>in vitro. In interaction assays involving the pathogen and <i>P. lunatus</i>, one strain of <i>H. uvarum</i> and two strains of <i>N. glabratus</i> reduced disease severity by up to 81%. However, <i>H. uvarum</i> is considered the most promising strain, as it poses no potential risk to human health. Thus, assays integrating both pathogen and host interactions are promising for identifying yeasts with potential for foliar disease biocontrol. This present study highlights <i>Hanseniaspora uvarum</i> as a promising biocontrol agent for foliar anthracnose.</p>

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Potential use of Hanseniaspora uvarum in the control of anthracnose in Phaseolus lunatus caused by Colletotrichum truncatum

  • 期刊论文

  • 发表日期：

    2025年10月17日

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  • Lucas Adler Moura Nunes Lopes,
  • Ana Paula Vieira da Silva,
  • Maria Hilma dos Santos,
  • Jaqueline Figueredo de Oliveira Costa,
  • Gildemberg Amorim Leal Junior

摘要

Yeasts are widely used in the biological control of post-harvest diseases because of their effectiveness and environmental safety. These characteristics make them promising agents for the control of foliar diseases, offering a sustainable alternative to chemical treatments. From this perspective, this study aimed to evaluate the potential of yeasts for the biological control of anthracnose in Phaseolus lunatus using both in vitro and in vivo assays. A total of 42 strains were isolated from fruits and culms, all of which inhibited in vitro mycelial growth of the phytopathogenic fungus Colletotrichum truncatum. The association between in vitro assays and disease control in plants was assessed by selecting seven contrasting strains based on their inhibition percentage. The strains were molecularly identified, tested for the production of soluble and volatile inhibitory compounds, and evaluated for their interactions with both the pathogen and the host. The identified strains belonged to Hanseniaspora uvarum, H. opuntiae, Lachancea thermotolerans, Pichia kudriavzevii, and Nakaseomyces glabratus. The seven strains produced soluble and volatile compounds capable of inhibiting C. truncatum in vitro. In interaction assays involving the pathogen and P. lunatus, one strain of H. uvarum and two strains of N. glabratus reduced disease severity by up to 81%. However, H. uvarum is considered the most promising strain, as it poses no potential risk to human health. Thus, assays integrating both pathogen and host interactions are promising for identifying yeasts with potential for foliar disease biocontrol. This present study highlights Hanseniaspora uvarum as a promising biocontrol agent for foliar anthracnose.