Patterns of genetic diversification in the invasive hybrid plant pathogen Phytophthora x alni and its parental species P. uniformis
The result's identifiers
Result code in 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>
Alternative codes found
RIV/00027073:_____/20:N0000020
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Patterns of genetic diversification in the invasive hybrid plant pathogen Phytophthora x alni and its parental species P. uniformis
Original language description
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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
40102 - Forestry
Result continuities
Project
<a href="/en/project/EF15_003%2F0000453" target="_blank" >EF15_003/0000453: Phytophthora Research Centre</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Phytopathology
ISSN
0031-949X
e-ISSN
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Volume of the periodical
110
Issue of the periodical within the volume
12
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
1959-1969
UT code for WoS article
000598090900010
EID of the result in the Scopus database
2-s2.0-85091200609