Stem rust on barberry species in Europe: Host specificities and genetic diversity

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027006%3A_____%2F22%3A10175250" target="_blank" >RIV/00027006:_____/22:10175250 - isvavai.cz</a>

Result on the web

<a href="https://www.frontiersin.org/articles/10.3389/fgene.2022.988031/pdf" target="_blank" >https://www.frontiersin.org/articles/10.3389/fgene.2022.988031/pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3389/fgene.2022.988031" target="_blank" >10.3389/fgene.2022.988031</a>

Result language

angličtina

Original language name

Stem rust on barberry species in Europe: Host specificities and genetic diversity

Original language description

The increased emergence of cereal stem rust in southern and western Europe, caused by the pathogen Puccinia graminis, and the prevalence of alternate (sexual) host, Berberis species, have regained attention as the sexual host may serve as source of novel pathogen variability that may pose a threat to cereal supply. The main objective of the present study was to investigate the functional role of Berberis species in the current epidemiological situation of cereal stem rust in Europe. Surveys in 11 European countries were carried out from 2018 to 2020, where aecial infections from five barberry species were collected. Phylogenetic analysis of 121 single aecial clusters of diverse origin using the elongation factor 1-alpha gene indicated the presence of different special forms (aka formae speciales) of P. graminis adapted to different cereal and grass species. Inoculation studies using aecial clusters from Spain, United Kingdom, and Switzerland resulted in 533 stem rust isolates sampled from wheat, barley, rye, and oat, which confirmed the presence of multiple special forms of P. graminis. Microsatellite marker analysis of a subset of 192 sexually-derived isolates recovered on wheat, barley and rye from the three populations confirmed the generation of novel genetic diversity revealed by the detection of 135 multilocus genotypes. Discriminant analysis of principal components resulted in four genetic clusters, which grouped at both local and country level. Here, we demonstrated that a variety of Berberis species may serve as functional alternate hosts for cereal stem rust fungi and highlights the increased risks that the sexual cycle may pose to cereal production in Europe, which calls for new initiatives within rust surveillance, epidemiological research and resistance breeding.

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

R - Projekt Ramcoveho programu EK

Publication year

2022

Confidentiality

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

Name of the periodical

Frontiers in Genetics

ISSN

1664-8021

e-ISSN

—

Volume of the periodical

13

Issue of the periodical within the volume

SEP 27 2022

Country of publishing house

CH - SWITZERLAND

Number of pages

13

Pages from-to

988031

UT code for WoS article

000868567800001

EID of the result in the Scopus database

2-s2.0-85139949902