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Trichoderma species from the cacao agroecosystem with biocontrol potential of Moniliophthora roreri

Authors: Omar Reyes-Figueroa; Carlos F. Ortiz-García; Magdiel Torres-de la Cruz; Luz del C. Lagunes-Espinoza; Guadalupe Valdovinos-Ponce;

Trichoderma species from the cacao agroecosystem with biocontrol potential of Moniliophthora roreri

Abstract

La moniliasis del cacao ( Moniliophthora roreri ) es la principal limitante parasítica de la producción de cacao ( Theobroma cacao ) en México. Una alternativa sostenible para el control de la enfermedad es el uso del hongo Trichoderma . El objetivo del presente estudio fue seleccionar aislamientos nativos de Trichoderma con las mejores características antagónicas y fisiológicas in vitro, para el control de M. roreri . Para ello, se caracterizaron 50 aislamientos de Trichoderma , obtenidos del agroecosistema cacao. El crecimiento micelial y la producción de conidios a 25, 30 y 35 °C se consideraron variables fisiológicas. El micoparasitismo, antibiosis y antagonismo potencial fueron las variables antagónicas. Se encontraron diferencias significativas ( P = 0.0001) en todas las variables evaluadas . El intervalo de temperatura óptima para el crecimiento micelial y producción de conidios fue de 25 a 30 °C. El micoparasitismo varió de 0 a 100 % y solo los aislamientos de seis especies mostraron esta característica. La antibiosis osciló entre 6.8 y 55.5 %, y el antagonismo potencial varió de 3.4 a 69 %. Trichoderma virens (TTC017) y T. harzianum (TTC090, TTC039, TTC073) mostraron el mejor biocontrol potencial in vitro , por lo que son cepas prometedoras para futuras investigaciones sobre control biológico de la moniliasis del cacao.

Keywords

Forestry, SD1-669.5

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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