sentences:  The geographical distribution of the two species appears to be related to temperature, "F. graminearum" being the more common species occurring in warmer climates.Deoxynivalenol has been implicated in incidents of mycotoxicoses in both humans and farm animals.Vomitoxin belongs to a class of mycotoxins (trichothecenes) which are strong inhibitors of protein synthesis; exposure to vomitoxin causes the brain to decrease its uptake of the amino acid tryptophan and, in turn, its synthesis of serotonin.