search for




 

Occurrence of Toxigenic Fusarium spp. and Zearalenone in Scabby Rice Grains and Healthy Ones
Res. Plant Dis. 2018;24:308-312
Published online December 31, 2018
© 2018 The Korean Society of Plant Pathology.

Ja Yeong Jang1, Sosoo Kim1, Hyun Suk Jin1, Seul Gi Baek1, Sujin O2, Kyutae Kim2, Jeomsoon Kim1, and Theresa Lee1*

1Microbial Safety Team, National Institute of Agricultural Sciences, Wanju 55365, Korea
2Department of Anti-aging, Geochang-gun Agricultural Technology Center, Geochang 50147, Korea
*Tel: +82-63-238-3202 Fax: +82-63-238-3836 E-mail: tessyl1@korea.kr
Received September 27, 2018; Revised October 18, 2018; Accepted October 19, 2018.
cc 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.
Abstract
We analyzed rice sample with scab (collected in 2017) for fungal occurrence and found that frequency of Fusarium spp. was the highest among fungal genera. Within Fusarium, Fusarium asiaticum-nivalenol type dominated as 79%. Among mycotoxins, zearalenone was the highest toxin detected (1117 ng/g), followed by deoxynivalenol (163 ng/g), 15-acetyl deoxynivalenol (155 ng/g), nivalenol (110 ng/g). Analysis of mycotoxin levels in scabby and healthy grains (collected in 2015) revealed that both grain samples were contaminated with zearalenone. However, level difference of zearalenone between the samples was over 5 times as the scabby samples were 1400-2370 ng/g, while healthy ones were 240-430 ng/g. This result indicates that scabby grains should be removed when harvest to reduce zearalenone contamination in rice.
Keywords : Fusarium asiaticum, Rice, Scab, Zearalenone


December 2018, 24 (4)