我国北方玉米子粒禾谷镰孢菌群产毒素化学型检测分析

Molecular Detection of Mycotoxin Chemotypes of Seeds Borned Fusarium graminearum Clade on Maize

利用镰孢菌产毒素基因特异性引物,对分离自我国北方春玉米区玉米子粒的禾谷镰孢菌复合种群(Fusarium graminearum clade)的43株镰孢菌菌株进行产毒素化学型检测。结果表明,我国北方玉米子粒中携带的禾谷镰孢菌(包括F.graminearum和F.asiaticum)检测到2种产毒素化学型,F.graminearum只产生脱氧雪腐镰孢烯醇(Deoxynivalenol,DON),F.asiaticum可以产生脱氧雪腐镰孢烯醇(Deoxynivalenol,DON)和雪腐镰孢烯醇(Nivalenol,NIV)。

Based on specific primers of Fusarium toxin gene, of 43 Fusarium graminearum clade strains which isolated from maize seeds of maize producing areas of north China were detected for the mycotoxin chemotypes. The results indicated that Fusarium graminearum clade, including the species of F. graminearum and F. asiaticum were found to produce two kinds of mycotoxin chemotypes. F. graminearum was Deoxynivalenol producer only, and F. asi- aticum were Deoxynivalenol and Nivalenol producers.