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Three Mycogone Species, Including a New Species, Cause Wet Bubble Disease of Agaricus bisporus in China

文献类型： 外文期刊

作者： Du, Yixin 1 ; Shi, Niuniu 1 ; Ruan, Hongchun 1 ; Chen, Furu 1 ;

作者机构： 1.Fujian Acad Agr Sci, Inst Plant Protect, Fuzhou 350013, Fujian, Peoples R China

2.Fujian Key Lab Monitoring & Integrated Management, Fuzhou 350013, Fujian, Peoples R China

关键词： Agaricus bisporus; multilocus phylogeny; Mycogone; wet bubble disease

期刊名称：PLANT DISEASE （ 影响因子：4.614； 五年影响因子：5.33 ）

ISSN： 0191-2917

年卷期： 2021 年 105 卷 12 期

页码：

收录情况： SCI

摘要： White button mushroom, Agaricus bisporus (Lange) Imbach, is the most extensively cultivated and edible mushroom worldwide. The production of A. bisporus is commonly affected by wet bubble disease (WBD), imposing a significant economic burden in China. Although studies have shown that this disease is caused by fungi of the Mycogone genus, the pathogen has not been fully characterized. In this study, 802 samples of diseased fruiting bodies of A. bisporus were collected from nine major mushroom-cultivating provinces in China, yielding a total of 586 Mycogone isolates. The morphologic characteristics of these isolates were observed and compared, and multilocus phylogenetic analyses (internal transcribed spacer [ITS], ACT, TEF1-alpha, TUB, RPB2, and large ribosomal subunit [LSU]) were performed on the selected representative isolates. Three Mycogone species were identified: a new species, M. xinjiangensis; M. perniciosa; and M. rosea. Mycogone rosea was the first ever reported in China. Furthermore, M. rosea was found to be the most prevalent species (54.95% of all isolates) in all the sampled areas, except in Hubei and Xinjiang, followed by M. perniciosa (39.93%) and M. xinjiangensis (5.12%). Pathogenicity tests on the fruiting body and mushroom bed substantiated Koch's postulates by the development of mildly different symptoms after inoculation with each species. This study, therefore, enhances our knowledge of the species associated with WBD in A. bisporus and provides useful insights for preventing WBD and allied diseases.

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