Great pathotype diversity and reduced virulence complexity in a Central European population of Blumeria graminis f. sp. hordei in 2015-2017

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25328859%3A_____%2F19%3AN0000004" target="_blank" >RIV/25328859:_____/19:N0000004 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007%2Fs10658-018-1593-6" target="_blank" >https://link.springer.com/article/10.1007%2Fs10658-018-1593-6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10658-018-1593-6" target="_blank" >10.1007/s10658-018-1593-6</a>

Result language

angličtina

Original language name

Great pathotype diversity and reduced virulence complexity in a Central European population of Blumeria graminis f. sp. hordei in 2015-2017

Original language description

Powdery mildew caused by the airborne fungus Blumeria graminis f. sp. hordei is one of the main diseases of barley (Hordeum vulgare) throughout the world. In Europe spring and winter barley is widely grown under high-input management and with European-bred varieties containing resistance genes to B. graminis f. sp. hordei. The pathogen is wind-borne and in Central Europe spores can be blown in from any direction. Thus, in this region directional selection can maintain and expand virulences arising from local mutations or introduced from other parts of the continent. In this paper, 309 isolates were studied and, based on the reaction to 32 differential varieties, assigned to 279 pathotypes (Simple index=0.903). Complexity ranged from 5 to 18 virulences, where the most frequent (56) were isolates characterized by nine virulences. In 2016 and 2017, eight additional differential varieties revealed that the population was highly diverse and 226 isolates were represented by 224 pathotypes (Simple index=0.982). This illustrates the importance of genetic recombination in the formation of this pathogen population. There was a gradual decrease in virulence frequencies to some resistances resulting in a reduced average virulence complexity from 11.30 in 2015 to 9.26 in 2017. The cause might be attributed to a decreased area of varieties with the particular resistances leading to a weakening of directional selection. New virulences to resistances contained in Camilla, Sara and E-388/01 were detected over the same period.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

40106 - Agronomy, plant breeding and plant protection; (Agricultural biotechnology to be 4.4)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

EUROPEAN JOURNAL OF PLANT PATHOLOGY

ISSN

0929-1873

e-ISSN

1573-8469

Volume of the periodical

153

Issue of the periodical within the volume

3

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

11

Pages from-to

801-811

UT code for WoS article

000458697500011

EID of the result in the Scopus database

2-s2.0-85053278848