Panmixia defines the genetic diversity of a unique arthropod-dispersed fungus specific to Protea flowers

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dc.contributor.authorAylward, Janneke
dc.contributor.authorDreyer, Leanne L.
dc.contributor.authorSteenkamp, Emma T.
dc.contributor.authorWingfield, Michael J.
dc.contributor.authorRoets, Francois
dc.date.accessioned2014-09-29T07:22:37Z
dc.date.available2014-09-29T07:22:37Z
dc.date.issued2014-09
dc.descriptionPublication of this article was funded by the Stellenbosch University Open Access Fund.en_ZA
dc.descriptionThe original publication is available at http://www.onlinelibrary.wiley.comen_ZA
dc.descriptionPlease cite as follows:en_ZA
dc.descriptionAylward, J. et al. 2014. Panmixia defines the genetic diversity of a unique arthropod-dispersed fungus specific to Protea flowers. Ecology and Evolution, 4(17): 3444-3455, doi:10.1002/ece3.1149.en_ZA
dc.description.abstractKnoxdaviesia proteae, a fungus specific to the floral structures of the iconic Cape Floral Kingdom plant, Protea repens, is dispersed by mites phoretic on beetles that pollinate these flowers. Although the vectors of K. proteae have been identified, little is known regarding its patterns of distribution. Seed bearing infructescences of P. repens were sampled from current and previous flowering seasons, from which K. proteae individuals were isolated and cultured. The genotypes of K. proteae isolates were determined using 12 microsatellite markers specific to this species. Genetic diversity indices showed a high level of similarity between K. proteae isolates from the two different infructescence age classes. The heterozygosity of the population was high (0.74 +- 0.04), and exceptional genotypic diversity was encountered (^G = 97.87%). Population differentiation was negligible, owing to the numerous migrants between the infructescence age classes (Nm = 47.83) and between P. repens trees (Nm = 2.96). Parsimony analysis revealed interconnected genotypes, indicative of recombination and homoplasies, and the index of linkage disequilibrium confirmed that outcrossing is prevalent in K. proteae (rd = 0.0067; P = 0.132). The high diversity and panmixia in this population is likely a result of regular gene flow and an outcrossing reproductive strategy. The lack of genetic cohesion between individuals from a single P. repens tree suggests that K. proteae dispersal does not primarily occur over short distances via mites as hypothesized, but rather that longdistance dispersal by beetles plays an important part in the biology of these intriguing fungi.en_ZA
dc.description.sponsorshipStellenbosch Universityen_ZA
dc.description.versionPublishers' Versionen_ZA
dc.format.extentp. 3444-3455 : ill.
dc.format.extent
dc.identifier.citationAylward, J. et al. 2014. Panmixia defines the genetic diversity of a unique arthropod-dispersed fungus specific to Protea flowers. Ecology and Evolution, 4(17):3444-3455, doi:10.1002/ece3.1149.en_ZA
dc.identifier.issn2045-7758 (Online)
dc.identifier.otherdoi:10.1002/ece3.1149
dc.identifier.urihttp://hdl.handle.net/10019.1/95614
dc.language.isoen_ZAen_ZA
dc.publisherWiley Open Accessen_ZA
dc.rights.holderAuthors retain copyright.en_ZA
dc.subjectKnoxdaviesia proteaeen_ZA
dc.subjectOphiostomatoid fungien_ZA
dc.subjectPanmixiaen_ZA
dc.titlePanmixia defines the genetic diversity of a unique arthropod-dispersed fungus specific to Protea flowersen_ZA
dc.typeArticleen_ZA
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