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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Diversification of a large genus in a continental biodiversity hotspot: Temporal and spatial origin of Muraltia (Polygalaceae) in the Cape of South Africa
Molecular Phylogenetics and Evolution, Volume 43, No. 1, Year 2007
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Description
Phylogenetic relationships in the largely South African genus Muraltia (Polygalaceae) are assessed based on DNA sequence data (nuclear ribosomal ITS, plastid atpB-rbcL spacer, trnL intron, and trnL-F spacer) for 73 of the 117 currently recognized species in the genus. The previously recognised subgenus Muraltia is monophyletic, but the South African endemic genus Nylandtia is embedded in Muraltia subgenus Psiloclada. Subgenus Muraltia is found to be sister to subgenus Psiloclada. Estimates show the beginning of diversification of the two subgenera in the early Miocene (Psiloclada, 19.3 ± 3.4 Ma; Muraltia, 21.0 ± 3.5 Ma) pre-dating the establishment of the Benguela current (intermittent in the middle to late Oligocene and markedly intensifying in the late Miocene), and summer-dry climate in the Cape region. However, the later increase in species numbers is contemporaneous with these climatic phenomena. Results of dispersal-vicariance analyses indicate that major clades in Muraltia diversified from the southwestern and northwestern Cape, where most of the species are found today. © 2006 Elsevier Inc. All rights reserved.
Authors & Co-Authors
Forest, Félix
United Kingdom, Richmond
Jodrell Laboratory
United Kingdom, Reading
University of Reading
Nänni, Ingrid
South Africa, Pretoria
South African National Biodiversity Institute
Chase, Mark W.
United Kingdom, Richmond
Jodrell Laboratory
Crane, Peter R.
United Kingdom, Richmond
Royal Botanic Gardens, Kew
Hawkins, Julie A.
United Kingdom, Reading
University of Reading
Statistics
Citations: 49
Authors: 5
Affiliations: 4
Identifiers
Doi:
10.1016/j.ympev.2006.08.017
ISSN:
10557903
e-ISSN:
10959513
Research Areas
Cancer
Environmental
Genetics And Genomics
Study Locations
South Africa