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Emergence of Fusarium verticillioides in Finland
European Journal of Plant Pathology ( IF 1.7 ) Pub Date : 2020-10-06 , DOI: 10.1007/s10658-020-02118-2
Gagkaeva T. Yu , T. Yli-Mattila

In summer 2019, perithecia superficial on the leaf sheath near the base of the stem were visually observed on stalks of winter wheat cultivar Ceylon in Southwest Finland. Mycological examination and translation elongation factor 1-alpha gene sequence of single ascospore isolates determined that they were Fusarium verticillioides (Sacc.) Nirenberg (teleomorph: Gibberella moniliformis Wineland). According to the published information, neither the anamorph nor the teleomorph stages of this pathogen have been previously detected in cereals in Finland and Scandinavian countries. The emergence of this fungus is probably caused by the influence of climate change, which may favour the distribution, development and adaptation of introduced mycotoxigenic fungi. Detection of a fumonisin-producing F. verticillioides allows the prediction of changes in the pattern of grain mycotoxin contamination in northern European countries. A mutation in sexual reproduction was also detected. The mature perithecia contained three types of spores: straight one- or three-septate and abnormal rounded ascospores.



中文翻译:

芬兰枯萎病菌的出现

在2019年夏季,在西南芬兰的冬小麦品种锡兰茎上目视观察到茎基部附近叶鞘上的表皮被膜。单个子囊孢子分离株的真菌学检查和翻译延伸因子1-alpha基因序列确定它们是镰孢镰刀菌(Sacc。)Nirenberg(teleomorph:Gibberella moniliformis酒乡)。根据公开的信息,以前在芬兰和斯堪的纳维亚国家的谷物中都未检出这种病原体的无定型和远变型阶段。这种真菌的出现可能是由于气候变化的影响,它可能有利于引入的产毒真菌的分布,发育和适应。检测产生伏马毒素的拟南芥F. verticillioides可以预测北欧国家谷物真菌毒素污染模式的变化。还检测到性生殖突变。成熟的皮膜含有三种类型的孢子:直的一或三隔孢子和异常的圆形子囊孢子。

更新日期:2020-10-07
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