Chiang Mai Journal of Science

Print ISSN: 0125-2526 | eISSN : 2465-3845

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A Challenge for Mushroom Growers: Daldinia eschscholtzii Associated with Oyster Mushroom Growing Substrate

Achala J. Gajanayake, Milan C. Samarakoon, Digvijayini Bundhun, Ruvishika S. Jayawardena, Thatsanee Luangharn and Kevin D. Hyde
* Author for corresponding; e-mail address: kdhyde3@gmail.com
Volume: Vol.48 No.3 (Special Issue I : May 2021)
Research Article
DOI:
Received: 21 November 2020, Revised: -, Accepted: 12 March 2021, Published: -

Citation: Gajanayake A.J., Samarakoon M.C., Bundhun D., Jayawardena R.S., Luangharn T. and Hyde K.D., A Challenge for Mushroom Growers: Daldinia eschscholtzii Associated with Oyster Mushroom Growing Substrate, Chiang Mai Journal of Science, 2021; 48(3): 774-786.

Abstract

     Mushroom growing substrates are important for the quality, quantity and nutritional value of mushrooms produced. However, the fungal contamination in substrates is known as a major problem in mushroom cultivation. Therefore, accurate identification of contaminants may be important in order to improve mushroom cultivation to increase mushroom yield. Oyster mushroom grow bags in a mushroom farm at northern Thailand were contaminated with a Daldinia species. Contaminated oyster mushroom grow bags were brought to mycology laboratory of Center of Excellence in Fungal Research. Multi-locus phylogenies from combined LSU, ITS, RPB2 and TUB2 sequence data indicated that the contaminant Daldinia species clusters with Daldinia eschscholtzii. In this paper, D. eschscholtzii is described with a full description, color images and a phylogenetic tree of Hypoxylaceae to show the placement of the taxon. This is the first report of D. eschscholtzii associated with oyster mushroom growing substrate.

Keywords: grow bag contamination, host, mushroom growing, Sordariomycetes, taxonomy

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