Korean Journal of Mycology (Kor. J. Mycol.)
Sung Kee Hong 1, Soohyung Lee 1, Theresa Lee 1, Hyeonheui Ham 1, Hye Yeon Mun 1, Hyo Won Choi 2, Seung- Wan Son 3 and Jae-Gee Ryu
1Microbial Safety Team, National Academy of Agricultural Science, Wanju 55365, Korea
2Crop Protection Division, National Academy of Agricultural Science, Wanju 55365, Korea
3Horticultural Research Division, Chungcheongnam-do Agricultural Research and Extension Services, Yesan 32425, Korea
Correspondence to jgryu@rda.go.kr
Korean Journal of Mycology (Kor J Mycol) September, 2015, 43(3):158-164.
https://doi.org/10.4489/KJM.2015.43.3.158
Received: August 5, 2015; Revised: September 11, 2015; Accepted: September 23, 2015
Published: September, 2015.
© 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/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
A total of 509 rice panicle samples were collected at harvest time from fields in 8 provinces from 2010 to 2014. One hundred five grains per sample were plated on potato dextrose agar and 6,658 Fusarium isolates were obtained; among them, 67 were identified as Fusarium armeniacum by sequencing the translation elongation factor 1α (EF-1α) and confirmed by their morphological and cultural characteristics. Considerable variation in conidial size, colony color and EF-1α sequences was observed among the fungal isolates. The ability of 24 F. armeniacum isolates to produce T-2 and HT-2 toxin in potato sucrose agar was determined using liquid chromatography-mass spectrometry. Twenty one isolates produced T-2 and HT-2 toxin, resulting in varying toxin levels among the isolates. The results show that Korean isolates of F. armeniacum have diversity with respect to morphological, cultural, genetic, and toxigenic properties.
Fusarium armeniacum, Grain, Rice, Toxin