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The occurrence of thiabendazole-resistant isolates of Helminthosporium solani on potato seed tubers in Russia

The occurrence of thiabendazole-resistant isolates of Helminthosporium solani on potato seed... 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Plant Diseases and Protection Springer Journals

The occurrence of thiabendazole-resistant isolates of Helminthosporium solani on potato seed tubers in Russia

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References (12)

Publisher
Springer Journals
Copyright
Copyright © Deutsche Phytomedizinische Gesellschaft 2020
ISSN
1861-3829
eISSN
1861-3837
DOI
10.1007/s41348-020-00313-1
Publisher site
See Article on Publisher Site

Abstract

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.

Journal

Journal of Plant Diseases and ProtectionSpringer Journals

Published: Jun 10, 2020

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