Patterns of genetic diversification in the invasive hybrid plant pathogen Phytophthora x alni and its parental species P. uniformis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F20%3A43918334" target="_blank" >RIV/62156489:43410/20:43918334 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00027073:_____/20:N0000020

Výsledek na webu

<a href="https://doi.org/10.1094/PHYTO-12-19-0475-R" target="_blank" >https://doi.org/10.1094/PHYTO-12-19-0475-R</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1094/PHYTO-12-19-0475-R" target="_blank" >10.1094/PHYTO-12-19-0475-R</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Patterns of genetic diversification in the invasive hybrid plant pathogen Phytophthora x alni and its parental species P. uniformis

Popis výsledku v původním jazyce

In pathogenic fungi and oomycetes, interspecific hybridization may lead to the formation of new species having a greater impact on natural ecosystems than the parental species. From the early 1990s, a severe alder (Alnus spp.) decline due to an unknown Phytophthora species was observed in several European countries. Genetic analyses revealed that the disease was caused by the triploid hybrid P. x alni, which originated in Europe from the hybridization of P. uniformis and P. x multiformis. Here, we investigated the population structure of P. x alni (158 isolates) and P. uniformis (85 isolates) in several European countries using microsatellite markers. Our analyses confirmed the genetic structure previously observed in other European populations, with P. uniformis populations consisting of at most two multilocus genotypes (MLGs) and P. x alni populations dominated by MLG Pxa-1. The genetic structure of P. x alni populations in the Czech Republic, Hungary and Sweden seemed to reflect the physical isolation of river systems. Most rare P. x alni MLGs showed a loss of heterozygosity (LOH) at one or a few microsatellite loci compared with other MLGs. This LOH may allow a stabilization within the P. x alni genome or a rapid adaptation to stress situations. Alternatively, alleles may be lost because of random genetic drift in small, isolated populations, with no effect on fitness of P. x alni. Additional studies would be necessary to confirm these patterns of population diversification and to better understand the factors driving it.

Název v anglickém jazyce

Patterns of genetic diversification in the invasive hybrid plant pathogen Phytophthora x alni and its parental species P. uniformis

Popis výsledku anglicky

In pathogenic fungi and oomycetes, interspecific hybridization may lead to the formation of new species having a greater impact on natural ecosystems than the parental species. From the early 1990s, a severe alder (Alnus spp.) decline due to an unknown Phytophthora species was observed in several European countries. Genetic analyses revealed that the disease was caused by the triploid hybrid P. x alni, which originated in Europe from the hybridization of P. uniformis and P. x multiformis. Here, we investigated the population structure of P. x alni (158 isolates) and P. uniformis (85 isolates) in several European countries using microsatellite markers. Our analyses confirmed the genetic structure previously observed in other European populations, with P. uniformis populations consisting of at most two multilocus genotypes (MLGs) and P. x alni populations dominated by MLG Pxa-1. The genetic structure of P. x alni populations in the Czech Republic, Hungary and Sweden seemed to reflect the physical isolation of river systems. Most rare P. x alni MLGs showed a loss of heterozygosity (LOH) at one or a few microsatellite loci compared with other MLGs. This LOH may allow a stabilization within the P. x alni genome or a rapid adaptation to stress situations. Alternatively, alleles may be lost because of random genetic drift in small, isolated populations, with no effect on fitness of P. x alni. Additional studies would be necessary to confirm these patterns of population diversification and to better understand the factors driving it.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40102 - Forestry

Projekt

<a href="/cs/project/EF15_003%2F0000453" target="_blank" >EF15_003/0000453: Výzkumné centrum pro studium patogenů z rodu Phytophthora</a><br>

Návaznosti

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

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Phytopathology

ISSN

0031-949X

e-ISSN

—

Svazek periodika

110

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

1959-1969

Kód UT WoS článku

000598090900010

EID výsledku v databázi Scopus

2-s2.0-85091200609