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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Origin and evolution of the endemic Macaronesian Inuleae (Asteraceae): Evidence from the internal transcribed spacers of nuclear ribosomal DNA
Biological Journal of the Linnean Society, Volume 72, No. 1, Year 2001
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Description
The tribe Inuleae (Asteraceae) has 10 species endemic to the Macaronesian islands, including the three endemic genera Allagopappus, Schizogyne, and Vierea. Phylogenetic analyses of DNA sequence data from the internal transcribed spacers (ITS) of the nuclear ribosomal DNA of 47 taxa were performed using all Macaronesian endemics and representative species from 21 of the 36 genera of the Inuleae. The resulting ITS phylogeny reveals that Allagopappus is sister to a large clade that contains all genera with a predominantly Mediterranean distribution. This finding suggests that Allagopappus may represent an ancient lineage that found refuge in the Canary Islands following the major climatic and/or geologic changes in the Mediterranean basin after the Tertiary. The Macaronesian endemic genus Schizogyne is sister to Limbarda from the Mediterranean. The third Macaronesian endemic genus, Vierea, is sister to Perralderia, which is restricted to Morocco and Algeria. Pulicaria canariensis is sister to P. mauritanica, a species endemic to Morocco and Algeria. In contrast, P. diffusa from the Cape Verde Islands is sister to a broadly distributed species, P. crispa, that occurs from North Africa to the Arabian peninsula. Based on the ITS data, the genera Blumea, Inula, and Pulicaria are not monophyletic. The ITS trees suggested that Blumea mollis belongs to the tribe Plucheeae, a finding that is congruent with recent morphological evidence. A possible southern African origin for the core of the Laurasian taxa of the Inuleae is also suggested. © 2001 The Linnean Society of London.
Authors & Co-Authors
Francisco-Ortega, Javier
United States, Miami
Florida International University
Morocco, Sale
Ecole Nationale Forestière D’ingénieurs
Park, Seon Joo
United States, Miami
Fairchild Tropical Botanic Garden
Santos-Guerra, Arnoldo
United States, Austin
The University of Texas at Austin
Benabid, Abdelmalek
Spain, Tenerife
Jardin de Aclimatacion de la Orotava
Jansen, Robert K.
United States, Miami
Fairchild Tropical Botanic Garden
Statistics
Citations: 46
Authors: 5
Affiliations: 5
Identifiers
Doi:
10.1006/bijl.2000.0494
ISSN:
00244066
Research Areas
Cancer
Environmental
Genetics And Genomics
Study Locations
Multi-countries
Algeria
Cabo Verde
Morocco