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History of the invasion of the anther smut pathogen on Silene latifolia in North America
- Source :
- New Phytologist, New Phytologist, Wiley, 2013, 198 (3), pp.946-956. ⟨10.1111/nph.12177⟩
- Publication Year :
- 2013
- Publisher :
- HAL CCSD, 2013.
-
Abstract
- International audience; Understanding the routes of pathogen introduction contributes greatly to efforts to protect against future disease emergence. Here, we investigated the history of the invasion in North America by the fungal pathogen Microbotryum lychnidis-dioicae, which causes the anther smut disease on the white campion Silene latifolia. This system is a well-studied model in evolutionary biology and ecology of infectious disease in natural systems. Analyses based on microsatellite markers show that the introduced American M.lychnidis-dioicae probably came from Scotland, from a single population, and thus suffered from a drastic bottleneck compared with genetic diversity in the native European range. The pattern in M.lychnidis-dioicae contrasts with that found by previous studies in its host plant species S.latifolia, also introduced in North America. In the plant, several European lineages have been introduced from across Europe. The smaller number of introductions for M.lychnidis-dioicae probably relates to its life history traits, as it is an obligate, specialized pathogen that is neither transmitted by the seeds nor persistent in the environment. The results show that even a nonagricultural, biotrophic, and insect-vectored pathogen suffering from a very strong bottleneck can successfully establish populations on its introduced host.
- Subjects :
- 0106 biological sciences
costructure
Physiology
Population
Microbotryum violaceum
Introduced species
Plant Science
010603 evolutionary biology
01 natural sciences
03 medical and health sciences
Microbotryum silenes-dioicae
selfing
Silene latifolia
mating system
education
Silene
ComputingMilieux_MISCELLANEOUS
030304 developmental biology
0303 health sciences
Genetic diversity
education.field_of_study
Obligate
biology
Ecology
Basidiomycota
[SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE]
population genetics
Genetic Variation
15. Life on land
biology.organism_classification
plant pathogen
Genetics, Population
Oomycetes
Scotland
Host-Pathogen Interactions
North America
Microbotryum
Introduced Species
Microsatellite Repeats
Subjects
Details
- Language :
- English
- ISSN :
- 0028646X and 14698137
- Database :
- OpenAIRE
- Journal :
- New Phytologist, New Phytologist, Wiley, 2013, 198 (3), pp.946-956. ⟨10.1111/nph.12177⟩
- Accession number :
- edsair.doi.dedup.....ae70833ce48b2d742080cddc96ad908b