Evaluation of the sensitivity of Colletotrichum spp. to Trichoderma harzianum
The objective of this study was to evaluate in vitro the effects of T. harzianum on five species of Colletotrichum. For the pairing test, Colletotrichum spp. was inoculated in synthetic PDA medium and after 72 hours the antagonist T. harzianum was added, in the opposite direction to the phytopathoge...
| Autores: | , , , , , , |
|---|---|
| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | Brasil |
| Recursos: | Universidade Estadual de Alagoas (UNEAL) |
| Repositorio: | Diversitas Journal |
| Idioma: | portugués inglés |
| OAI Identifier: | oai:ojs.diversitasjournal.com.br:article/3065 |
| Acesso em linha: | https://diversitasjournal.com.br/diversitas_journal/article/view/3065 |
| Access Level: | acceso abierto |
| Palavra-chave: | antracnose biofungicidas fungicidas biológicos micoparasitismo Passiflora biofungicides biological fungicides mycoparasitism mycoparasitism Passiflora |
| Resumo: | The objective of this study was to evaluate in vitro the effects of T. harzianum on five species of Colletotrichum. For the pairing test, Colletotrichum spp. was inoculated in synthetic PDA medium and after 72 hours the antagonist T. harzianum was added, in the opposite direction to the phytopathogens. To evaluate the action of metabolites, Colletotrichum species were inoculated in the center of Petri dishes, separately and after 48 hours T. harzianum was inoculated in plates containing synthetic PDA medium. The bases of the plates containing antagonist and phytopathogens were joined and sealed. The mycelial growth index (MGI) and the percentage of mycelial growth inhibition (PMGI) were estimated. When evaluating the antagonism of T. harzianum to Colletotrichum spp. in the pairing test and volatile metabolites, it was observed that all Colletotrichum species presented PMGI below 31% in both tests. In the MGI for the matching test, it was observed that C. tropicale was the most sensitive species (1.87 cm) at the concentrations of 1 and 1.5 L/ha, while in the volatile metabolites test it was C. plurivorum (3.21 cm). T. harzianum is a promising species for the reduction of Colletotrichum spp. associated with anthracnose in passion fruit crops. |
|---|