Benjamin Yaw Ayim 1, Young-Tae Kim 1, Kallol Das 1, In-Kyu Kang 1, Seung-Yeol Lee 1,2* Hee-Young Jung 1,2
1College of Agriculture and Life Sciences, Kyungpook National University, Daegu 41566, Korea
2Institute of Plant Medicine, Kyungpook National University, Daegu 41566, Korea
Correspondence to leesy1123@knu.ac.kr
Korean Journal of Mycology (Kor J Mycol) September, 2019, 47(3):181-6.
https://doi.org/10.4489/KJM.20190022
Accepted: September 05, 2019; Revised: September 02, 2019; Received: June 17, 2019
Published: September, 2019.
© 2019 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.
A designated fungal isolate, KNU-US-1802E was isolated from the soil in Uiseong, Korea. To identify characteristics of the isolate, it was cultured on PDA media for 6 days at 35°C. Colonies on PDA are flat, light gray, dense, with entire margins; reverse dark gray to black, with white margins. Aerial mycelia were smooth-walled, hyaline and 40~42 mm diameter after 6 days at 35°C. Conidia were hyaline, one-celled, ellipsoidal to fusiform, forming long chains with average length x width of 5.0±0.3 × 2.9±0.2 μm. Molecular analysis indicates that the internal transcribed spacer (ITS) region and partial beta-tubulin (tub2) gene sequence showed 100% and 99% similarities, respectively with Acrophialophora ellipsoidea CGMCC 3.15255 collected from China. Phylogenetic analysis by the neighbor-joining (NJ) method shows that the KNU-US-1802E was clustered with A. ellipsoidea CGMCC 3.15255 in a phylogenetic tree constructed using the concatenated sequences of ITS region and tub2 gene sequences with a high bootstrap value. Based on these findings, the isolate KNU-US-1802E was identified as Acrophialophora ellipsoidea, and this is the first report of this isolate in Korea.
Acrophialophora ellipsoidea, Morphological characteristic, Phylogenetic analysis, Soil-inhabitant