Korean Journal of Mycology (Kor. J. Mycol.)
Indexed in SCOPUS, KCI, DOAJ
OPEN ACCESS, PEER REVIEWED
pISSN 0253-651X
eISSN 2383-5249
RESEARCH ARTICLE

Isolation and Identification of Two Unreported Fungi in Korea: Dothidea insculpta and Metarhizium rileyi

1School of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea
2Department of Horticultural Science, Kyungpook National University, Daegu 41566, Korea
3Institute of Plant Medicine, Kyungpook National University, Daegu 41566, Korea

Correspondence to leesy1123@knu.ac.kr

Korean Journal of Mycology (Kor J Mycol) September, 2021, 49(3):315-324.
https://doi.org/10.4489/KJM.20210028
Accepted: September 23, 2021; Revised: September 21, 2021; Received: January 19, 2021
Published: September, 2021.
© 2021 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.

ABSTRACT

In this study, the fungal strains KNU-Gunwi 2B and KNU-SOT5 were isolated from root-soil in a hillside and the cherry tree bark (Prunus serrulata), respectively from Gyeongbuk province in Korea. The strain KNU-SOT5 produced dark brown chlamydospores that were smooth to lightly rough-walled, globose to ellipsoidal, and the conidia were aseptate, guttulate, mostly fusiform with a diameter of 5.3-17.6×4.2-7.0 μm. Strain KNU-Gunwi 2B produced phialides that were smooth-walled, cylindrical with semi-papillate apices and the conidia were pale-green, broadly ellipsoid, and sometimes cylindrical with a diameter of 4.4-8.0×2.3-4.0 μm. The strain KNU-SOT5 and KNU-Gunwi 2B were resolved based on cultural and morphological characteristics, along with the phylogenetic analysis using the small subunit (SSU), large subunit (LSU), and internal transcribed spacers (ITS) regions. The fungal strains KNU-SOT5 and KNU-Gunwi 2B were identified as Dothidea insculpta and Metarhizium rileyi, which have not been reported in Korea.

Keywords

Cherry tree, Dothidea insculpta, Metarhizium rileyi, Phylogeny, Soil-inhabiting fungi

Section