Korean Journal of Mycology (Kor. J. Mycol.)
Kallol Das 1, Yeong-Hwan Kim 1, Jingi Yoo 2, Leonid N. Ten 1, Sang-Jae Kang 1, In-Kyu Kang 3, Seung-Yeol Lee 1,4,*, and Hee-Young Jung 1,4
1School of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea
2Tree Fruit Research and Extension Center, Washington State University, Wenatchee 98801, USA
3Department of Horticultural Science, Kyungpook National University, Daegu 41566, Korea
4Institute of Plant Medicine, Kyungpook National University, Daegu 41566, Korea
Correspondence to leesy1123@knu.ac.kr
Korean Journal of Mycology (Kor J Mycol) December, 2020, 48(4):511-518.
https://doi.org/10.4489/KJM.20200050
Accepted: December 21, 2020; Revised: December 17, 2020; Received: November 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.
This study was conducted to isolate and identify the fungal pathogen caused unreported post-harvest disease on apples (cv. Fuji) fruit in Korea. The disease symptoms on apples appeared as irregular, light to dark brown, slightly sunken spots. The three fungal strains were isolated from infected tissues of apple fruits and their cultural and morphological characteristics were completely consistent with those of Plenodomus collinsoniae. The phylogenetic analysis using the internal transcribed spacer (ITS) regions, beta-tubulin (TUB), and the second largest subunit of RNA polymerase II (RPB2) sequences revealed the closest relationship of the isolates with Plenodomus collinsoniae at the species level. The pathogenicity test showed the same dark brown spots on Fuji apple cultivar. Therefore, P. collinsoniae is a newly reported fungal agent causing post-harvest disease on apples in Korea.
Apple, genus Plenodomus, Pathogenicity test, Phylogeny