| pcr analysis of the tri13 gene to determine the genetic potential of fusarium graminearum isolates from iran to produce nivalenol and deoxynivalenol. | fusarium graminearum trichothecene producing isolates can be broadly divided into two chemotypes based on the production of the 8- ketotrichothecenes deoxynivalenol (don) and nivalenol (niv). functional tri13 gene required for the production of niv and 4- acetyl niv, whereas in the isolates producing don and its acetylated derivates, this gene is nonfunctional. in this study, a total of 57 isolates from different fields of mazandaran province, iran were identified as f. graminearum using classic ... | 2008 | 18523864 |