ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Trichoderma viride suppresses fumonisin B1 production by Fusarium moniliforme.

Yates, I. E., Meredith, F., Smart, W., Bacon, C. W. and Jaworski, A. J.

Journal of Food Protection Year: 1999 Vol: 62 Issue: 11 Pages: 1326-1332 Ref: 36 ref.

1999

บทคัดย่อ

Biocontrol activity against F. moniliforme [Gibberella fujikuroi] was analysed for a T. viride strain isolated from root segments of corn [maize] plants grown in Piedmont, Georgia, USA. The isolate suppressed radial extension of G. fujikuroi colonies during co-cultivation on potato dextrose agar and fumonisin B1 (FB1) production during incubation of both fungi on maize kernels. T. viride decreased radial extension of G. fujikuroi by 46% after 6 days and by 90% after 14 days. Furthermore, the colony diameter of G. fujikuroi was less at 14 days than at 5 days, suggesting that G. fujikuroi mycelia were undergoing lysis. FB1 production by G. fujikuroi on maize kernels decreased 85% when both organisms were inoculated the same day onto maize kernels and by 72% when inoculation of T. viride was delayed by 7 days after G. fujikuroi inoculation. These results are the first to demonstrate that T. viride can suppress FB1 production by G. fujikuroi, thereby functioning to control mycotoxin production. Thus

, this isolate may be useful in biological control to inhibit G. fujikuroi growth as a preharvest agent to prevent disease during plant development and/or as a postharvest agent during seed storage to suppress FB1 accumulation when kernels are dried inadequately.