Fungi, Especially Gibberella zeae, and Zearalenone Occurrence in Wheat

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Abstract
A study was made of the occurrence of G. zeae in 102 samples of wheat marketed in 1975. Of the 19 zearalenone[a mycotoxin]-positive samples, G. zeae infection of surface-sterilized wheat kernels ranged from 6-60%. No G. zeae was detected in 35 samples. The highest level of zearalenone was 11,054 ppb in a sample with 36% infection. In wheat, 17 samples with over 10% infection were positive for zearalenone and 7 were negative. Aspergillus flavus was detected in 53 samples with an infection of 2-46%, but no aflatoxin was found. Various species of Alternaria were found in 100 of the 102 samples.

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