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 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 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 have diversity with respect to
morphological, cultural, genetic, and toxigenic properties.