Korean Journal of Mycology (Kor. J. Mycol.)
Min-Keun Kim 1,*, Soon-Ae Sim 1, Ah-Young Kim 1, Jin-Hyeuk Kwon 1, and Young-Ho Chang 2
1Environmental Agriculture Research Division, Gyeongsangnam-do Agricultural Research and Extension
Service, Jinju 52733, Korea
2Crop Research Division, Gyeongsangnam-do Agricultural Research and Extension Service, Jinju 52733,
Korea
Correspondence to goguma99@korea.kr
Korean Journal of Mycology (Kor J Mycol) December, 2020, 48(4):397-405.
https://doi.org/10.4489/KJM.20200039
Accepted: November 30, 2020; Revised: November 20, 2020; Received: September 02, 2020
Published: December, 2020.
© 2020 THE KOREAN SOCIETY OF MYCOLOGY.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Beech mushroom (Hypsizygus marmoreus) is one of the most popular mushrooms in Japan, China, and Korea because of its delicious taste, nutritious value, and unique crunchy texture. In 2018-2019, unusual signs on the mushroom were observed in mushroom farms in Gyeongnam Province. The main signs were the inhibition of mycelial growth and primordial formation on the surface of mushroom media. When green mold caused contamination at early stage, the rate of pinhead formation by the mushroom greatly decreased to 46.5-71.5%. Conidia of the causal green mold were ellipsoidal, dark green, and measured 2.0-3.1μm long. The optimum temperature for mycelial growth of the green mold was 25℃. The phylogenetic tree obtained from the internal transcribed spacer (ITS) rDNA sequences showed that the isolated green mold corresponded to Penicillium brevicompactum (100.0%). This is the first report of green mold contamination caused by P. brevicompactum on H. marmoreus.
Green mold contamination, Hypsizygus marmoreus, Penicillium brevicompactum