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http://dx.doi.org/10.4489/KJM.2015.43.3.158

Diversity of Mycotoxigenic Fusarium armeniacum Isolated from Rice Grains at Harvest Time in Korea  

Hong, Sung Kee (Microbial Safety Team, National Academy of Agricultural Science)
Lee, Soohyung (Microbial Safety Team, National Academy of Agricultural Science)
Lee, Theresa (Microbial Safety Team, National Academy of Agricultural Science)
Ham, Hyeonheui (Microbial Safety Team, National Academy of Agricultural Science)
Mun, Hye Yeon (Microbial Safety Team, National Academy of Agricultural Science)
Choi, Hyo Won (Crop Protection Division, National Academy of Agricultural Science)
Son, Seung-Wan (Horticultural Research Division, Chungcheongnam-do Agricultural Research and Extension Services)
Ryu, Jae-Gee (Microbial Safety Team, National Academy of Agricultural Science)
Publication Information
The Korean Journal of Mycology / v.43, no.3, 2015 , pp. 158-164 More about this Journal
Abstract
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 $1{\alpha}$ ($EF-1{\alpha}$) and confirmed by their morphological and cultural characteristics. Considerable variation in conidial size, colony color and $EF-1{\alpha}$ 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.
Keywords
Fusarium armeniacum; Grain; Rice; Toxin;
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Times Cited By KSCI : 2  (Citation Analysis)
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