During the last two decades, several case reports have been published worldwide about green mould infections of cultivated Agaricus bisporus, and the causative agents were identified as Trichoderma aggressivum. More recently, the green mould disease of Pleurotus spp. caused by Trichoderma has also been reported in several countries. Pleurotus ostreatus is the third-most important commercially grown basidiomycete worldwide, and its production is being increasingly affected by green mould infections causing great crop losses.The fungi responsible for the green mould disease of Pleurotus proved to be different from T. aggressivum, based on their cultural, morphological, physiological and molecular properties. The causative agents of the disease have been described as the new species Trichoderma pleurotum S.H. Yu & M.S. Park and Trichoderma pleuroticola S.H. Yu & M.S. Park, and the isolates from other countries were shown to be identical to them. The aim of this article is to give an overview of the global situation of Pleurotus green mould disease including the possibilities for fast diagnosis and disease control.
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