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10 results for “Melampsora larici-populina”
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, 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.
Data from: The genetic structure of the plant pathogenic fungus Melampsora larici-populina on its wild host is extensively impacted by host domestication
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Data from: Genetic structure of the poplar rust fungus Melampsora larici-populina: Evidence for isolation by distance in Europe and recent founder effects overseas
Open the record for dataset details and reuse information.
Melampsora larici-populina gene expression in telia, uredinia, urediniospores and in planta
GEO Series GSE49099. Melampsora laricis-populina. 12 samples. Type: Expression profiling by array.
Transcriptome of Melampsora larici-populina sexual stages [JGI version 1 genome]
GEO Series GSE106863. Melampsora laricis-populina. 9 samples. Type: Expression profiling by high throughput sequencing.
Melampsora larici-populina gene expression in different tissues of uredinia
GEO Series GSE21487. Melampsora laricis-populina. 9 samples. Type: Expression profiling by array.
Melampsora larici-populina gene expression in different tissues and development stages
GEO Series GSE23097. Melampsora laricis-populina. 9 samples. Type: Expression profiling by array.
Melampsora larici-populina gene expression in different tissues and developmental stages
GEO Series GSE21624. Melampsora laricis-populina. 21 samples. Type: Expression profiling by array.
Transcriptome of Melampsora larici-populina sexual stages [JGI version 2 genome]
GEO Series GSE180724. Melampsora laricis-populina. 9 samples. Type: Expression profiling by high throughput sequencing.
Early infection of poplar leaves by the rust pathogen Melampsora larici-populina
GEO Series GSE34802. Populus trichocarpa; Populus trichocarpa x Populus deltoides. 6 samples. Type: Expression profiling by array.
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