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- W2109846968 abstract "El incremento dramatico de incidencia y severidad de los “mohos verdes” en la produccion de hongos comestibles se refleja en la aparicion de formas altamente agresivas de estos patogenos, como es el caso de los biotipos de Trichoderma harzianum (Th1, Th2., Th3 y Th4), que han sido encontrados en Europa y Norte America, donde la importancia de la patogenicidad de dicho “moho” se comprobo en 1995 con las perdidas del 30-100% en las plantas de hongos comestibles en Chester, Pennsylvania. En Mexico se han identificado diversos “mohos contaminantes”, entre los cuales Trichoderma spp., se encuentra frecuentemente en la produccion de hongos comestibles (Agaricus bisporus, Pleurotus ostreatus y Lentinula edodes), en el 2004, un grupo de investigacion detecto la presencia de cepas altamente agresivas de T. aggressivum f. aggressivum, identificadas con tecnicas clasicas y moleculares, en muestras de substrato (compost) contaminado, proporcionado por la principal planta de hongos de Mexico. Actualmente se desconoce la situacion sobre la distribucion de Trichoderma harzianum y los problemas de contaminacion en la produccion de hongos comestibles, tanto de zonas rurales, como de zonas industrializadas en Mexico, puede causar serias disminuciones en la produccion de hongos comestibles y presentar perdidas economicas para los productores de la region. Palabras Claves: T. harzianum; T. aggressivum; patogenicidad; produccion de hongos comestibles.AbstractThe dramatic increase of green mould incidence and severity in edible mushroom production has been reflected in the emergence of highly aggressive forms of these pathogens, such as Trichoderma harzianum biotypes (Th1, Th2, Th3 and Th4). These have been found in Europe and North America where the importance of the mould’s pathogenicity was discovered in 1995 leading to 30%-100% losses from Th4 in edible mushrooms from farms in Chester, Pennsylvania. Several contaminating moulds have been identified in Mexico, Trichoderma spp. frequently occurring in edible mushroom production (Agaricus bisporus, Pleurotus ostreatus and Lentinula edodes). A research group detected the presence of highly aggressive strains of T. aggressivum f. aggressivum in 2004, identified by classical and molecular techniques on contaminated substrate (compost) samples provided by the main edible mushroom-growing farm in Mexico. The current situation regarding Trichoderma harzianum distribution and contamination problems in edible mushroom production in both rural and industrial areas in Mexico remains unknown. This can lead to a serious decrease in edible mushroom production lead to financial loss for the region’s producers. Key words: T. harzianum; T. aggressivum; pathogenicity; edible mushroom production." @default.
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- W2109846968 date "2009-07-01" @default.
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- W2109846968 title "Características de Trichoderma harzianum, como agente limitante en el cultivo de hongos comestibles" @default.
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