Artículo
Effects of endophytes Trichoderma amazonicum and Acremonium strictum on fungal pathogens of Paspalum
Depetris, Mara Belén
; Marcón, Florencia
; Gutiérrez, Alicia Susana; Skuletich, Viviana B.; Zandona, Dahiana; Acuña, Carlos Alberto
; Felitti, Silvina Andrea
Fecha de publicación:
10/2023
Editorial:
Crop Science Society of America
Revista:
Crop Science
ISSN:
0011-183X
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
In natural ecosystems, many plants engage in symbiotic interactions with fungal endophytes which can have impacts on host plant communities. In South American grasslands, several endophytes have been isolated from different Paspalum species. The aim of this work was to evaluate the antagonistic effect of endophytes Trichoderma amazonicum and Acremonium strictum against Claviceps paspali through in vitro and in vivo assays. In addition, they were evaluated as biocontrol agents against fungal pathogens which produce leaf spots such as Alternaria alternata and ipolaris sp. through in vitro experiments. The in vitro assessment was conducted by dual culture between the antagonists and the three pathogens. For the in vivo assay, plants of Paspalum notatum and Paspalum dilatatum were planted in the field in a completely randomized block design with six replications. Three treatments were applied: T1 = endophyte inoculum, T2 = fungicide, and T3 = control. Seed yield, seed set, healthy seed set, and weight of healthy seed set per kilogram of seeds were evaluated for three timepoints. Trichoderma amazonicum exhibited a high growthinhibition, while A. strictum a moderate to low effect in vitro. In the in vivo assay, significant differences were observed among treatments in both species. T1 increased the kilogram of healthy seed set per 100 kg of seed by increasing the seed set and weight of healthy seed set in at least one of the evaluated dates in P. notatum and P. dilatatum. Based on these results, T. amazonicum and A. strictum have antagonistic effects on the pathogens assessed.
Palabras clave:
ENDOPHYTE
,
ANTAGONIST
,
SEED YIELD
,
CLAVICEPS PASPALI
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IBONE)
Articulos de INST.DE BOTANICA DEL NORDESTE (I)
Articulos de INST.DE BOTANICA DEL NORDESTE (I)
Articulos(IICAR)
Articulos de INST. DE INVESTIGACIONES EN CIENCIAS AGRARIAS DE ROSARIO
Articulos de INST. DE INVESTIGACIONES EN CIENCIAS AGRARIAS DE ROSARIO
Citación
Depetris, Mara Belén; Marcón, Florencia; Gutiérrez, Alicia Susana; Skuletich, Viviana B.; Zandona, Dahiana; et al.; Effects of endophytes Trichoderma amazonicum and Acremonium strictum on fungal pathogens of Paspalum; Crop Science Society of America; Crop Science; 63; 6; 10-2023; 3498-3508
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