Silver scurf is a potato tuber disease caused by Helminthosporium solani, which has become an increasing problem in many regions of Russia. The fungicide thiabendazole is widely used to control silver scab. Its target of action is the beta-tubulin gene. Single nucleotide mutations in this gene lead to a multiple increase in the resistance of the strain to the fungicide. The resistance of 37 Helminthosporium solani strains to the fungicide thiabendazole was tested in vitro. Tested strains were isolated from potato tubers grown in seven regions of Russia. In this study, the presence of thiabendazole-resistant strains was shown in populations of the European part of Russia, but not for the Far Eastern part. In the Far Eastern part, potatoes are grown from seeds of local production and there is practically no exchange with the European part of Russia. In the present study, we obtain sequences of the beta-tubulin gene and tested the resistance of strains affecting potatoes in the Far Eastern part of Russia to thiabendazole to show the absence of resistant strains.

中文翻译：

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俄罗斯马铃薯种子块茎中对噻菌灵耐药的Helminthosporium solani菌株的发生

银屑病是一种由马铃薯根瘤菌（Helminthosporium solani）引起的马铃薯块茎病，在俄罗斯许多地区已成为一个日益严重的问题。杀菌剂噻菌灵被广泛用于控制银sc。它的作用靶标是β-微管蛋白基因。该基因中的单核苷酸突变导致菌株对杀真菌剂的抗性多次增加。37 solmanthosporium solani的抗性在体外测试了杀真菌剂噻菌灵的菌株。从俄罗斯七个地区种植的马铃薯块茎中分离出测试菌株。在这项研究中，在俄罗斯欧洲部分的人群中发现了对噻菌灵耐药的菌株，但远东地区则没有。在远东地区，土豆是用当地生产的种子种植的，与俄罗斯的欧洲部分几乎没有交换。在本研究中，我们获得了β-微管蛋白基因的序列，并测试了影响俄罗斯远东地区马铃薯的菌株对噻菌灵的抗药性，表明没有抗药性。