Anstett2013187

Référence

Anstett, D.N., O'Brien, H., Larsen, E.W., Troy McMullin, R., Fortin, M.-J. (2013) Dispersal analysis of three Peltigera species based on landscape genetics data. Mycology, 4(4):187-195. (Scopus )

Résumé

Lichens can either disperse sexually through fungal spores or asexually through vegetative propagules and fragmentation. Understanding how genetic variation in lichens is distributed across a landscape can be useful to infer dispersal and establishment events in space and time as well as the conditions needed for this establishment. Most studies have sampled lichens across large spatial distances on the order of hundreds of kilometers, while here we sequence the internal transcribed spacer (ITS) for 113 samples of three Peltigera species sampling at a variety of small spatial scales. The maximum distance between sampled lichens was 3.7 km and minimum distance was approximately 20 cm. We find significant amounts of genetic diversity across all three species. For P. praetextata, two out of the three most common ITS genotypes exhibit spatial autocorrelation supporting short-range dispersal. Using rarefaction we estimate that all ITS genotypes in our sampling area have been found for P. praetextata and P. evansiana, but not P. canina. Comparing our results with other ITS data in the literature provides evidence for global dispersal for at least one sequence followed by the evolution of endemic haplotypes with wide dispersal and rare haplotypes with more local dispersal. © 2013 Mycological Society of China.

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@ARTICLE { Anstett2013187,
    AUTHOR = { Anstett, D.N. and O'Brien, H. and Larsen, E.W. and Troy McMullin, R. and Fortin, M.-J. },
    TITLE = { Dispersal analysis of three Peltigera species based on landscape genetics data },
    JOURNAL = { Mycology },
    YEAR = { 2013 },
    VOLUME = { 4 },
    NUMBER = { 4 },
    PAGES = { 187-195 },
    NOTE = { cited By 1 },
    ABSTRACT = { Lichens can either disperse sexually through fungal spores or asexually through vegetative propagules and fragmentation. Understanding how genetic variation in lichens is distributed across a landscape can be useful to infer dispersal and establishment events in space and time as well as the conditions needed for this establishment. Most studies have sampled lichens across large spatial distances on the order of hundreds of kilometers, while here we sequence the internal transcribed spacer (ITS) for 113 samples of three Peltigera species sampling at a variety of small spatial scales. The maximum distance between sampled lichens was 3.7 km and minimum distance was approximately 20 cm. We find significant amounts of genetic diversity across all three species. For P. praetextata, two out of the three most common ITS genotypes exhibit spatial autocorrelation supporting short-range dispersal. Using rarefaction we estimate that all ITS genotypes in our sampling area have been found for P. praetextata and P. evansiana, but not P. canina. Comparing our results with other ITS data in the literature provides evidence for global dispersal for at least one sequence followed by the evolution of endemic haplotypes with wide dispersal and rare haplotypes with more local dispersal. © 2013 Mycological Society of China. },
    AFFILIATION = { Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Toronto, ON, M5S 3B2, Canada; Department of Biology, University of Toronto at Mississauga, 3359 Mississauga Road N., Mississauga, ON, L5L 1C6, Canada; School of Biological Sciences, University of Bristol, Woodland Road, Bristol BS8 1UG, United Kingdom; Cell and Systems Biology, University of Toronto, 25 Harbord Street, Toronto, ON, M5S 3G5, Canada; Department of Integrative Biology, University of Guelph, Guelph, ON, N1G 2W1, Canada },
    AUTHOR_KEYWORDS = { biogeography; ITS; joint-count test; lichen; rarefaction; symbiosis },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1080/21501203.2013.875955 },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893529210&doi=10.1080%2f21501203.2013.875955&partnerID=40&md5=d87b921aa1703810dec4a08c4bb6e0b4 },
}

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