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- Moiloa, Ntwai A.Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences (author)
Biogeographic origins of southern African Silene (Caryophyllaceae)
- Article/chapterEnglish2021
Publisher, publication year, extent ...
- Elsevier BV,2021
Numbers
- LIBRIS-ID:oai:gup.ub.gu.se/306959
- https://gup.ub.gu.se/publication/306959URI
- https://doi.org/10.1016/j.ympev.2021.107199DOI
Supplementary language notes
- Language:English
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- SwePubSwePub
Classification
Notes
- Silene (Caryophyllaceae) is distributed predominantly in the northern Hemisphere, where it is most diverse around the Mediterranean Basin. The genus is also well represented in North Africa, extending into tropical, subSaharan and southern Africa. Eight native species are recognized in southern Africa, taxonomically placed in two sections: Elisanthe and Silene s.l. Although the taxonomy of the southern African taxa has recently been revised, their phylogenetic relationships and biogeographic history remain unclear. This study aims to infer the phylogenetic position and geographic origins of the southern African taxa. We generated DNA sequences of nuclear and plastid loci from several individuals belonging to all eight species of Silene recognized from southern Africa, and combined our DNA sequences with existing data representing species from major clades (i.e. sections) based on the recently revised Silene infrageneric taxonomy. We used a Bayesian coalescent species tree continuous diffusion approach to co-estimate the species tree and the ancestral areas of representative members of the genus. Our results show that the perennial southern African members of section Elisanthe form a strongly-supported clade with the Eurasian annual S. noctiflora and the Central Asian perennial S. turkestanica. The rest of the perennial species form a strongly-supported clade together with the annual S. aethiopica, which is nested in a larger Mediterranean clade comprising mostly annual species classified in section Silene s.l. Estimates of ancestral areas indicate a late Pleistocene dispersal to southern Africa from central and East Africa for the sub-Saharan members of section Silene s.l. The Elisanthe clade is inferred to have colonized southern Africa through longdistance dispersal from Eurasia during the late Pleistocene. Our findings support the hypothesis of a relatively recent colonization into southern Africa resulting from two independent dispersal events during the Pleistocene.
Subject headings and genre
- NATURVETENSKAP Biologi hsv//swe
- NATURAL SCIENCES Biological Sciences hsv//eng
- Biogeography
- Relaxed random wa l k
- Elisanthe
- BEAST
- Phylogeny
- Brownian diffusion
- Species tree
- historical biogeography
- phylogenetic-relationships
- taxonomic revision
- evolution
- flora
- diversification
- dispersal
- siphonomorpha
- afrotemperate
- hybridization
- Biochemistry & Molecular Biology
- Evolutionary Biology
- Heredity
Added entries (persons, corporate bodies, meetings, titles ...)
- Mesbah, M. (author)
- Nylinder, S. (author)
- Manning, J. (author)
- Forest, F. (author)
- de Boer, H. J. (author)
- Bacon, Christine D.Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences(Swepub:gu)xbacoc (author)
- Oxelman, Bengt,1958Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences(Swepub:gu)xoxebe (author)
- Göteborgs universitetInstitutionen för biologi och miljövetenskap (creator_code:org_t)
Related titles
- In:Molecular Phylogenetics and Evolution: Elsevier BV1621055-7903
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