Fungicide sensitivity and characterization of cobweb disease on a Pleurotus eryngii mushroom crop caused by Cladobotryum mycophilum

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Title
Fungicide sensitivity and characterization of cobweb disease on a Pleurotus eryngii mushroom crop caused by Cladobotryum mycophilum
Author(s)
M K Kim; S W Seuk; Y H Lee; Hye Ran Kim; K M Cho
Bibliographic Citation
Plant Pathology Journal, vol. 30, no. 1, pp. 82-89
Publication Year
2014
Abstract
In 2009-2010, unusual symptoms were observed on Pleurotus eryngii grown in mushroom farms in Gyeongnam Province, Republic of Korea. One of the main symptoms was a cobweb-like growth of fungal mycelia over the surface of the mushroom. The colonies on the surface rapidly overwhelmed the mushrooms and developed several spores within 3-4 days. The colonized surface turned pale brown or yellow. The fruit body eventually turned dark brown and became rancid. Koch's postulates were completed by spraying and spotting using isolated strains. The phylogenetic tree obtained from the internal transcribed spacer sequence analysis showed that the isolated fungal pathogen corresponded to Cladobotryum mycophilum (99.5%). In the fungicide sensitivity tests, the ED50 values for the isolate with respect to benomyl and carbendazim were from 0.29 to 0.31 ppm. Benzimidazole fungicides were most effective against C. mycophilum, a causal agent of cobweb disease in P. eryngii.
Keyword
Cladobotryum mycophilumCobweb diseaseFungal pathogenFungicidesPleurotus eryngii
ISSN
I000-0113
Publisher
Korea Soc-Assoc-Inst
DOI
http://dx.doi.org/10.5423/PPJ.OA.09.2013.0098
Type
Article
Appears in Collections:
Division of Research on National Challenges > Plant Systems Engineering Research > 1. Journal Articles
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