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Diversity of Virulence Phenotypes of Puccinia Triticina in Different Agroclimatic Zones of the North Caucasus

  • PLANT PROTECTION
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Russian Agricultural Sciences Aims and scope

Abstract

The phenotypic composition of the North Caucasian population of wheat leaf rust pathogen (Puccinia triticina Erikks.) in various agroclimatic zones of the region in 2016–2018 is analyzed. Under study were 233 single pustule isolates, of which 212 virulence phenotypes were identified. In all the years of research, a high level of population diversity was established (the Shannon index (Sh) was 0.92–0.99). In 2016, the PHRS phenotype, which was identified in the southern foothill, western Azov, and eastern steppe agroclimatic zones, dominated. In the population of 2016, phenotypes with a high and medium number of virulence genes prevailed. In 2017, the phenotypes of DCRL, LBLL (Western Azov zone), and PCQB (Northern zone) were best represented. Avirulent phenotype BBBB was common for populations of 2016–2018. In 2016, a phenotype with virulence to Lr9 (TLGS) was first detected. In 2017 and 2018, phenotypes virulent to the Lr24 gene (PKTT, SFGQ, CFPQ, TKTS, MKTT, LKSR) were detected in the populations of the fungus. A high level of population differences in phenotypic composition between the years of research was established (Rogers index (R) was 0.96–0.99).

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Funding

This study was carried out in accordance with the state assignment no. 075-00376-19-00 of the Ministry of Science and Higher Education of the Russian Federation as part of research on the topic no. 0686-2019-0008.

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Authors and Affiliations

  1. All-Russia Scientific Research Institute of Biological Plant Protection, 350039, Krasnodar, Russia

    G. V. Volkova, O. A. Kudinova & O. F. Vaganova

Authors
  1. G. V. Volkova
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  2. O. A. Kudinova
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  3. O. F. Vaganova
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Correspondence to G. V. Volkova.

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The authors declare that they have no conflict of interest. This article does not contain any studies involving animals or human participants performed by any of the authors.

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Translated by M. Shulskaya

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Volkova, G.V., Kudinova, O.A. & Vaganova, O.F. Diversity of Virulence Phenotypes of Puccinia Triticina in Different Agroclimatic Zones of the North Caucasus. Russ. Agricult. Sci. 46, 23–27 (2020). https://doi.org/10.3103/S1068367420010188

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