APPEARANCE OF FUNGUS, ERGOSTEROL AND Fusarium MYCOTOXINS IN THE HUSK, AXIAL STEM AND STALK AFTER EAR INOCULATION OF FIELD CORN
- 1 January 1985
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Plant Science
- Vol. 65 (1) , 47-53
- https://doi.org/10.4141/cjps85-007
Abstract
The appearance of fungus, ergosterol and the myotoxins deoxynivalenol, 15-acetyldeoxynivalenol and zearalenone in the husk, axial stem and stalk of field corn (Zea mays L.) after ear inoculation with Fusarium graminearum was studied over a growing season. In certain tissues, ergosterol and deoxynivalenol concentrations varied in concert and reached maxima at 370 ppm each after 6 wk and 12 ppm each after 7 wk in the husks and axial stems, respectively. Ergosterol and deoxynivalenol were differentially translocated into the stalk with ergosterol (26 ppm maximum after 6 wk) appearing primarily in the sections above the cob attachment point and deoxynivalenol (2.8 ppm maximum after 7 wk) primarily in the sections below. 15-Acetyldeoxynivalenol was detected only in the husks (up to 59 ppm) and after 3 wk, concentrations rapidly dropped to ca. 20% of maximum. Zearalenone (5.2 ppm) was only observed in the husks and then mainly near harvest time.Key words: Corn, Fusarium graminearum, mycotoxins, deoxynivalenol, ergosterol, translocationThis publication has 1 reference indexed in Scilit:
- Effect of milling and baking on deoxynivalenol (vomitoxin) content of eastern Canadian wheatsJournal of Agricultural and Food Chemistry, 1984