EFS12- Book of abstracts - Contact

SESSION 2: SECONDARY METABOLITES – BIOCHEMISTRY,
BIOSYNTHESIS, FEED AND FOOD SAFETY
P33 - Fusarium toxin in forage rice grown in a paddy
field in Japan
R. Uegaki, H. Inoue, M. Tohno, T. Tsukiboshi
National Agriculture and Food Research Organization (NARO), Institute of Livestock and Grassland
Science (NILGS), 768 Senbonmatsu, Nasushiobara, Tochigi, Japan
E-mail: uegaki@affrc.go.jp
The reduction, we investigated the occurrence of mycotoxin-producing Fusarium
fungi on forage rice and the changes of fumonisin (FUM), deoxynivalenol
(DON)nivalenol (NIV) and zearalenon (ZEN) in forage rice in Japan.
Two rice cultivars, early maturing (A) and late maturing (B), were grown in a
paddy field in Tochigi, Japan, 36.92°N, 139.93°E in 2011. The plants were
sampled from heading stage to full-ripe stage. The Fusarium fungus on the plants
was isolated and identified, and a qualified analysis of FUM, DON, NIV and ZEN
in the plants was performed using an LC/MS/MS system.
Eighteen Fusarium fungi were isolated from cultivar A, including 7 of F. fujikuroi
(all FUM-producing), 5 of F. asiaticum (4 producing ZEN, 2 producing NIV and 2
producing DON). Seven were isolated from cultivar B, including 4 of F. fujikuroi (all
producing FUM) and 1 of F. graminearum (DON and ZEN-producing). These
Fusarium fungi were isolated from the head but also from SL from the heading
stage to the full-ripe stage in both cultivars. The concentration of FUM (as FUM
B1) in the heads of cultivar A ranged from ND (