Antagonism Trichoderma spp. strains isolated from Tanaxuri, Michoacan, Mexico against pathogens of avocado (Persea americana Mill)
Some species of the genus Trichoderma have the ability to parasitize fungal plant pathogens. This makes them interesting in the control of diseases (anthracnose) caused by fungi in post-harvest avocado fruit. Therefore, the objective of this research was the isolation and identification of native st...
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| Autores principales: | , , , , , , , , , , |
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| Formato: | Online |
| Lenguaje: | spa |
| Publicado: |
Universidad de Sonora
2022
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| Acceso en línea: | https://biotecnia.unison.mx/index.php/biotecnia/article/view/1726 |
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| Sumario: | Some species of the genus Trichoderma have the ability to parasitize fungal plant pathogens. This makes them interesting in the control of diseases (anthracnose) caused by fungi in post-harvest avocado fruit. Therefore, the objective of this research was the isolation and identification of native strains of Trichoderma spp. of avocado cultures with antagonistic potential in vivo and in vitro against pathogens of this fruit. The strains were isolated from the root and soil of the avocado in the town of Tanaxuri, Michoacán. Six strains were obtained and characterized as TSONM1 (Trichoderma spp.), TRONM2 (Trichoderma spp.), TSONM3 (Trichoderma spp.), TSONM4 (Trichoderma spp.), TSONM5 (Trichoderma spp.) and TSONM6 (Trichoderma harzianum). Subsequently, the isolated strains were confronted with Neofusicoccum parvum, Colletotrichum gloeosporioides, Diaporthe sp. and Phomopsis perseae, observing in vitro inhibitions greater than 80 %. While in the in vivo evaluation, the TSONM6 strain (Trichoderma harzianum) showed greater antagonistic activity against C. gloeosporioides, Diaporthe sp. and P. persea. Additionally, the avocado fruits treated with TSONM6, presented minimum percentages (< 2%) of rotting of the pulp and peduncle. Therefore, Thichoderma harzianun could be a good alternative for postharvest biological control of avocado. |
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