Variation in 8-ketotrichothecenes and zearalenone production byFusarium graminearumisolates from corn and barley in Korea
✍ Scribed by Jeong -Ah Seo; Jin -Cheol Kim; Dong -Hyun Lee; Yin -Won Lee
- Book ID
- 104773054
- Publisher
- Springer Netherlands
- Year
- 1996
- Tongue
- English
- Weight
- 551 KB
- Volume
- 134
- Category
- Article
- ISSN
- 0301-486X
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✦ Synopsis
A total of 214 Fusarium graminearum isolates were obtained from corn and barley which were collected from Kangwon province and the southern part of Korea, respectively, and were tested for 8-ketotrichothecenes and zearalenone (ZEA) production on rice grains. The incidences of trichothecene production by 105 isolates of E graminearum from corn were 59.0% for deoxynivalenol (DON), 37.1% for 15-acetyldeoxynivalenol (15-ADON), 13.3 % for 3-acetyldeoxynivalenol (3 -ADON), 7.6% for 3,15-diacetyldeoxynivalenol (3,15-DADON), 20.0% for nivalenol (NIV), 6.7% for 4-acetylnivalenol (4-ANIV), and 1.0% for 4,15-diacetylnivalenol (4,15-DANIV). DON chemotypes frequently produced 15-ADON as the major isomer rather than 3-ADON and 9 of the 61 DON chemotypes produced low levels of NIV. On the other hand, the incidences of trichothecene production of 109 isolates by E graminearum from barley were 24.8% for DON, 72.5% for NIV, 62.4% for 4-ANIV, and 10.1% for 4,15-DANIV. Of these isolates, 78 were NIV chemotypes and only one isolate produced DON and 3-ADON as major toxins. In addition, 26 of the 78 NIV chemotypes produced low levels of DON. ZEA was frequently produced by the trichothecene-producing isolates and the incidences of ZEA were 51.4% and 31.2% for the isolates from com and barley, respectively. There was a great regional difference in trichothecene production by E graminearum isolates between corn-and barley-producing areas in Korea.