<abstract xmlns="http://www.w3.org/1999/xhtml"><italic>Mycogone perniciosa</italic> is the fungal pathogen causing the wet bubble of white button mushrooms (<italic>Agaricus bisporus</italic>). The main symptoms of disease are undifferentiated, irregular forms of mushroom tissue, cap spotting and development of amber liquid droplets on the distorted mushrooms. The aim of the research was to assess the pathogenicity of <italic>M. perniciosa</italic> isolates that were obtained from the infected sporophores. Six isolates from Polish mushroom farms as well reference strain of <italic>Hypomyces perniciosus</italic> CBS 322.52 were used in this study. The pathogenicity of isolates was assessed on the basis of severity of disease symptoms and crop reduction in the first flush. Mushroom crop was infected with different suspensions containing of <italic>M. perniciosa</italic> aleuriospores. Significant variability was shown between tested isolates. It was stated that the pathogenicity of isolates and concentration of conidia had a significant influence on the mushroom yield. The isolate of high pathogenicity caused significant yield losses, after inoculation with 1.3 × 104·m−2, whereas the isolate with fairly pathogenicity did not produce symptoms of wet bubble disease or caused slight deformation of single sporophores, even when the casing soil was inoculated with 1.3 × 106·m−2 spores.</abstract>

Mycogone perniciosa is the fungal pathogen causing the wet bubble of white button mushrooms (Agaricus bisporus). The main symptoms of disease are undifferentiated, irregular forms of mushroom tissue, cap spotting and development of amber liquid droplets on the distorted mushrooms. The aim of the research was to assess the pathogenicity of M. perniciosa isolates that were obtained from the infected sporophores. Six isolates from Polish mushroom farms as well reference strain of Hypomyces perniciosus CBS 322.52 were used in this study. The pathogenicity of isolates was assessed on the basis of severity of disease symptoms and crop reduction in the first flush. Mushroom crop was infected with different suspensions containing of M. perniciosa aleuriospores. Significant variability was shown between tested isolates. It was stated that the pathogenicity of isolates and concentration of conidia had a significant influence on the mushroom yield. The isolate of high pathogenicity caused significant yield losses, after inoculation with 1.3 × 104·m−2, whereas the isolate with fairly pathogenicity did not produce symptoms of wet bubble disease or caused slight deformation of single sporophores, even when the casing soil was inoculated with 1.3 × 106·m−2 spores.

Pathogenicity Of <italic>Mycogone Perniciosa</italic> Isolates Collected On Polish Mushroom Farms

Research Institute of Horticulture, Konstytucji 3 Maja 1/3, 96-100 Skierniewice, Poland

Journal of Horticultural Research

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Pathogenicity Of  Isolates Collected On Polish Mushroom Farms

Mycogone perniciosa is the fungal pathogen causing the wet bubble of white button mushrooms (Agaricus bisporus). The main symptoms of disease are...

Pathogenicity Of Mycogone Perniciosa Isolates Collected On Polish Mushroom Farms

Publié en ligne: 23 sept. 2015

Pages: 87 - 92

Reçu: 01 mai 2015

Accepté: 01 juin 2015

DOI: https://doi.org/10.2478/johr-2015-0011

Mots clés
wet bubble, strain pathogenicity, yield reduction

© Joanna Szumigaj-Tarnowska et al.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Pathogenicity Of Mycogone Perniciosa Isolates Collected On Polish Mushroom Farms

Publié en ligne: 23 sept. 2015

Pages: 87 - 92

Reçu: 01 mai 2015

Accepté: 01 juin 2015

DOI: https://doi.org/10.2478/johr-2015-0011

Mots cléswet bubble, strain pathogenicity, yield reduction

© Joanna Szumigaj-Tarnowska et al.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
wet bubble, strain pathogenicity, yield reduction