Data from: Genetic structure of the poplar rust fungus Melampsora larici-populina: Evidence for isolation by distance in Europe and recent founder effects overseas
Dispersal has a great impact on the genetic structure of populations, but remains difficult to estimate by direct measures. In particular, gradual and stochastic dispersal are often difficult to assess and to distinguish, although they have different evolutionary consequences. Plant pathogens, espec...
Main Authors: | , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
2012
|
Subjects: | |
Online Access: | http://hdl.handle.net/10255/dryad.40350 https://doi.org/10.5061/dryad.77900 |
id |
ftdryad:oai:v1.datadryad.org:10255/dryad.40350 |
---|---|
record_format |
openpolar |
spelling |
ftdryad:oai:v1.datadryad.org:10255/dryad.40350 2023-05-15T16:49:03+02:00 Data from: Genetic structure of the poplar rust fungus Melampsora larici-populina: Evidence for isolation by distance in Europe and recent founder effects overseas Barrès, Benoît Halkett, Fabien Dutech, Cyril Andrieux, Axelle Pinon, Jean Frey, Pascal Canada Iceland Western Europe 2012-06-18T17:25:18Z http://hdl.handle.net/10255/dryad.40350 https://doi.org/10.5061/dryad.77900 unknown 8;5;2008 doi:10.5061/dryad.77900/1 doi:10.1016/j.meegid.2008.04.005 PMID:18499532 doi:10.5061/dryad.77900 Barrès B, Halkett F, Dutech C, Andrieux A, Pinon J, Frey P (2008) Genetic structure of the poplar rust fungus Melampsora larici-populina: Evidence for isolation by distance in Europe and recent founder effects overseas. Infection, Genetics and Evolution 8(5): 577-587. http://hdl.handle.net/10255/dryad.40350 Plant pathogen Isolation by distance Long distance dispersal Gradual dispersal Stochastic dispersal Microsatellites Rust fungus Virulence Article 2012 ftdryad https://doi.org/10.5061/dryad.77900 https://doi.org/10.5061/dryad.77900/1 https://doi.org/10.1016/j.meegid.2008.04.005 2020-01-01T14:56:53Z Dispersal has a great impact on the genetic structure of populations, but remains difficult to estimate by direct measures. In particular, gradual and stochastic dispersal are often difficult to assess and to distinguish, although they have different evolutionary consequences. Plant pathogens, especially rust fungi, are suspected to display both dispersal modes, though on different spatial scales. In this study, we inferred dispersal capacities of the poplar rust fungus Melampsora larici-populina by examining the genetic diversity and structure of 13 populations from eight European and two overseas countries in the Northern hemisphere. M. larici-populina was sampled from both cultivated hybrid poplars and on the wild host, Populus nigra. The populations were analyzed with 11 microsatellite and 8 virulence markers. Although isolates displayed different virulence profiles according to the host plant, neutral markers revealed little population differentiation with respect to the type of host. This suggests an absence of reproductive isolation between populations sampled from cultivated and wild poplars. Conversely, studying the relationship between geographic and genetic structure allowed us to distinguish between isolation by distance (IBD) patterns and long distance dispersal (LDD) events. The European populations exhibited a significant IBD pattern, suggesting a regular and gradual dispersal of the pathogen over this spatial scale. Nonetheless, the genetic differentiation between these populations was low, suggesting an important gene flow on a continental scale. The two overseas populations from Iceland and Canada were shown to result from rare LDD events, and exhibited signatures of strong founder effects. Furthermore, the high genetic differentiation between both populations suggested that these two recent introductions were independent. This study illustrated how the proper use of population genetics methods can enable contrasted dispersal modes to be revealed. Article in Journal/Newspaper Iceland Dryad Digital Repository (Duke University) Canada |
institution |
Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
Plant pathogen Isolation by distance Long distance dispersal Gradual dispersal Stochastic dispersal Microsatellites Rust fungus Virulence |
spellingShingle |
Plant pathogen Isolation by distance Long distance dispersal Gradual dispersal Stochastic dispersal Microsatellites Rust fungus Virulence Barrès, Benoît Halkett, Fabien Dutech, Cyril Andrieux, Axelle Pinon, Jean Frey, Pascal Data from: Genetic structure of the poplar rust fungus Melampsora larici-populina: Evidence for isolation by distance in Europe and recent founder effects overseas |
topic_facet |
Plant pathogen Isolation by distance Long distance dispersal Gradual dispersal Stochastic dispersal Microsatellites Rust fungus Virulence |
description |
Dispersal has a great impact on the genetic structure of populations, but remains difficult to estimate by direct measures. In particular, gradual and stochastic dispersal are often difficult to assess and to distinguish, although they have different evolutionary consequences. Plant pathogens, especially rust fungi, are suspected to display both dispersal modes, though on different spatial scales. In this study, we inferred dispersal capacities of the poplar rust fungus Melampsora larici-populina by examining the genetic diversity and structure of 13 populations from eight European and two overseas countries in the Northern hemisphere. M. larici-populina was sampled from both cultivated hybrid poplars and on the wild host, Populus nigra. The populations were analyzed with 11 microsatellite and 8 virulence markers. Although isolates displayed different virulence profiles according to the host plant, neutral markers revealed little population differentiation with respect to the type of host. This suggests an absence of reproductive isolation between populations sampled from cultivated and wild poplars. Conversely, studying the relationship between geographic and genetic structure allowed us to distinguish between isolation by distance (IBD) patterns and long distance dispersal (LDD) events. The European populations exhibited a significant IBD pattern, suggesting a regular and gradual dispersal of the pathogen over this spatial scale. Nonetheless, the genetic differentiation between these populations was low, suggesting an important gene flow on a continental scale. The two overseas populations from Iceland and Canada were shown to result from rare LDD events, and exhibited signatures of strong founder effects. Furthermore, the high genetic differentiation between both populations suggested that these two recent introductions were independent. This study illustrated how the proper use of population genetics methods can enable contrasted dispersal modes to be revealed. |
format |
Article in Journal/Newspaper |
author |
Barrès, Benoît Halkett, Fabien Dutech, Cyril Andrieux, Axelle Pinon, Jean Frey, Pascal |
author_facet |
Barrès, Benoît Halkett, Fabien Dutech, Cyril Andrieux, Axelle Pinon, Jean Frey, Pascal |
author_sort |
Barrès, Benoît |
title |
Data from: Genetic structure of the poplar rust fungus Melampsora larici-populina: Evidence for isolation by distance in Europe and recent founder effects overseas |
title_short |
Data from: Genetic structure of the poplar rust fungus Melampsora larici-populina: Evidence for isolation by distance in Europe and recent founder effects overseas |
title_full |
Data from: Genetic structure of the poplar rust fungus Melampsora larici-populina: Evidence for isolation by distance in Europe and recent founder effects overseas |
title_fullStr |
Data from: Genetic structure of the poplar rust fungus Melampsora larici-populina: Evidence for isolation by distance in Europe and recent founder effects overseas |
title_full_unstemmed |
Data from: Genetic structure of the poplar rust fungus Melampsora larici-populina: Evidence for isolation by distance in Europe and recent founder effects overseas |
title_sort |
data from: genetic structure of the poplar rust fungus melampsora larici-populina: evidence for isolation by distance in europe and recent founder effects overseas |
publishDate |
2012 |
url |
http://hdl.handle.net/10255/dryad.40350 https://doi.org/10.5061/dryad.77900 |
op_coverage |
Canada Iceland Western Europe |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
8;5;2008 doi:10.5061/dryad.77900/1 doi:10.1016/j.meegid.2008.04.005 PMID:18499532 doi:10.5061/dryad.77900 Barrès B, Halkett F, Dutech C, Andrieux A, Pinon J, Frey P (2008) Genetic structure of the poplar rust fungus Melampsora larici-populina: Evidence for isolation by distance in Europe and recent founder effects overseas. Infection, Genetics and Evolution 8(5): 577-587. http://hdl.handle.net/10255/dryad.40350 |
op_doi |
https://doi.org/10.5061/dryad.77900 https://doi.org/10.5061/dryad.77900/1 https://doi.org/10.1016/j.meegid.2008.04.005 |
_version_ |
1766039117908410368 |