Population Structure of Phytophthora × alni on a Local Scale and Its Temporal Development

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027073%3A_____%2F26%3AN0000002" target="_blank" >RIV/00027073:_____/26:N0000002 - isvavai.cz</a>

Výsledek na webu

<a href="https://apsjournals.apsnet.org/doi/10.1094/PHYTO-03-25-0091-R" target="_blank" >https://apsjournals.apsnet.org/doi/10.1094/PHYTO-03-25-0091-R</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1094/PHYTO-03-25-0091-R" target="_blank" >10.1094/PHYTO-03-25-0091-R</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Population Structure of Phytophthora × alni on a Local Scale and Its Temporal Development

Popis výsledku v původním jazyce

Within Phytophthora alni, an invasive pathogen of alders (Alnus spp.), three species have been identified. The most frequent and pathogenic species is P. ×alni. It has a variable intraspecific structure, with the dominance of the Pxa-1 genotype and the presence of dozens of rare genotypes (in most cases derived from Pxa-1). Its local populations are highly variable, and their population structure and development remain unknown. We compared two sets of strains isolated from identical sites during the epidemic (2005–2010) and post-epidemic (2020–2024) phases of the disease in the Vltava River basin (Czech Republic) and studied them using microsatellite marker analysis and fitness tests (sporangia production, growth, and virulence). We acquired 151 P. ×alni isolates of 23 multilocus genotypes. We found that during the post-epidemic phase, genetic diversity decreased, and the dominance and incidence of the Pxa-1 genotype increased. Only the dominant genotype (Pxa-1) was repeatedly isolated from the same sites, whereas the rare genotypes were replaced. During the post-epidemic phase, both the incidence of rare genotypes and the degree of their derivation from Pxa-1 decreased. The rare genotypes had lower fitness than Pxa-1 (the more changes there were, the worse the fitness was). These results allow us to hypothesize the evolution of local populations of P. ×alni in Europe, as the most pathogenic genotype, Pxa-1, will also prevail during the late phases of the disease and the risk of further damage to the surviving host populations will persist.

Název v anglickém jazyce

Population Structure of Phytophthora × alni on a Local Scale and Its Temporal Development

Popis výsledku anglicky

Within Phytophthora alni, an invasive pathogen of alders (Alnus spp.), three species have been identified. The most frequent and pathogenic species is P. ×alni. It has a variable intraspecific structure, with the dominance of the Pxa-1 genotype and the presence of dozens of rare genotypes (in most cases derived from Pxa-1). Its local populations are highly variable, and their population structure and development remain unknown. We compared two sets of strains isolated from identical sites during the epidemic (2005–2010) and post-epidemic (2020–2024) phases of the disease in the Vltava River basin (Czech Republic) and studied them using microsatellite marker analysis and fitness tests (sporangia production, growth, and virulence). We acquired 151 P. ×alni isolates of 23 multilocus genotypes. We found that during the post-epidemic phase, genetic diversity decreased, and the dominance and incidence of the Pxa-1 genotype increased. Only the dominant genotype (Pxa-1) was repeatedly isolated from the same sites, whereas the rare genotypes were replaced. During the post-epidemic phase, both the incidence of rare genotypes and the degree of their derivation from Pxa-1 decreased. The rare genotypes had lower fitness than Pxa-1 (the more changes there were, the worse the fitness was). These results allow us to hypothesize the evolution of local populations of P. ×alni in Europe, as the most pathogenic genotype, Pxa-1, will also prevail during the late phases of the disease and the risk of further damage to the surviving host populations will persist.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10603 - Genetics and heredity (medical genetics to be 3)

Projekt

<a href="/cs/project/SS05010191" target="_blank" >SS05010191: Identifikace rizikových změn struktury a diverzity mokřadních olšin a olšových luhů v důsledku invaze plísně olšové (Phytophthora alni) a stanovení perspektivy vývoje společenstev</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2026

Kód důvěrnosti údajů

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

Název periodika

Phytopathology

ISSN

0031-949X

e-ISSN

1943-7684

Svazek periodika

116

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

456-466

Kód UT WoS článku

001674607300001

EID výsledku v databázi Scopus

2-s2.0-105032212800