ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Fusarium species from Nepalese rice and production of mycotoxins and gibberelic acid by selected species.

Desjardins. A.E., Manadhar, H.K., Plattner, R.D., Manandhar, G.G., Poling, S.M. and Maragos, C.M.

Applied and Environmental Microbiology 66: 1020-1025.

2000

บทคัดย่อ

Fusarium species were isolated from rice seeds collected in 1997 on farms in the foothills of the Nepal Himalaya.  The predominant fusarium species were species of the Gibberella fujikuroi complex.  Other common species were Gibberella zeae (anamorph, Fusarium graminearum), Fusarium semitectum and Fusarium acuminatum.  Strains of Gibberella fujikuroi mating population C (anamorph F. fujikuroi) produced beauvericin, moniliformin and gibberellic acid, but little or no fumonisin, whereas strains of mating population D (anamorph F. proliferatum) produced beauvericin, fumonisin and , usually, moniliformin, but no gibberellic acid.  Some strains of G. zeae produced nivalenol, whereas other produced deoxynivalenol.  Despite the occurrence of toxin producing strains, Nepalese rice showed no detectable contamination with these mycotoxins.  Effective traditional practices for grain drying and storage may prevent contamination of Nepalese rice with Fusarium mycotoxins.