Volume 19 Part 1 Article 27
Title: Cob web and dry bubble diseases in Lentinula edodes cultivation – A new report
Author: VP Sharma, Shweta Sharma, Satish Kumar, Mamta Gupta and Shwet Kamal
Lentinula edodes (Berk.) Pegler, commonly known as Shiitake mushroom, is a wood decaying basidiomycete cultivated in Asia, Europe, North America and Australia using either cut oak logs or saw dust as the substrate. It ranks third among the most cultivated mushrooms globally. Like other mushrooms, shiitake is also attacked by several fungal pathogens during its bag cultivation. Fungal competitors of shiitake logs are always been an issue even with the best management practices. Some most common fungal competitors of shiitake mushroom are e.g. Trichoderma longibrachiatum, Blue mold (Penicillium sp.), Red bread mold (Neurospora sitophila), Mucor spp., Aspergillus spp. Black Bulgur, Bachelor’s Buttons or Rubber Buttons, Black Jelly Drops or Poor Man’s Licorice (Bulgaria inquinans), Hypoxlyon truncatum, Turkey Tail (Coriolus versicolor) and Split Gill fungus (Schizophyllum commune), causing yield reduction and subsequently economic losses. In present study, the two fungal diseases Cobweb and Dry bubble were encountered on shiitake fruiting bodies during its saw dust cultivation. During the present study the causal organisms of the two diseases were isolated and identified as Cladobotryum and Lecanicillium or Verticillium based on morphological and microscopical characters. The identification was also confirmed using ITS 5.8S rDNA sequences comparisons against NCBI databases. Different botanicals were used to control the cob web and dry bubble diseases on shiitake mushroom. To the best of our knowledge and available literature, this is the first report of Cladobotryum and Verticillium causing cob web and dry bubble diseases on shiitake mushroom.