Diversification of a large genus in a continental biodiversity hotspot: temporal and spatial origin of Muraltia (Polygalaceae) in the Cape of South Africa.

Diversification of a large genus in a continental biodiversity hotspot: temporal and spatial origin of Muraltia (Polygalaceae) in the Cape of South Africa. Research Abstract Details 

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Diversification of a large genus in a continental biodiversity hotspot: temporal and spatial origin of Muraltia (Polygalaceae) in the Cape of South Africa. Abstract Text:

Forest,Ingrid ,Mark W Chase,Peter R Crane,Julie A Hawkins,

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.

Diversification of a large genus in a continental biodiversity hotspot: temporal and spatial origin of Muraltia (Polygalaceae) in the Cape of South Africa. Publishing Authors By Initials

F Forest,I ,MW Chase,PR Crane,JA Hawkins,

For similar biological phenomena, cell phenomena, and immunity: immunity: antibody specificity: species specificity research abstracts see: biological phenomena, cell phenomena, and immunity: immunity: antibody specificity: species specificity research

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Diversification of a large genus in a continental biodiversity hotspot: temporal and spatial origin of Muraltia (Polygalaceae) in the Cape of South Africa. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Molecular phylogenetics and evolution

VOLUME: 43

Page Numbers: 60-74

Journal Abbreviation: Mol. Phylogenet. Evol.

ISSN: 1055-7903

DAY: 6

MONTH: 09

YEAR: 2006

Diversification of a large genus in a continental biodiversity hotspot: temporal and spatial origin of Muraltia (Polygalaceae) in the Cape of South Africa. Information

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LANGUAGE: eng

NlmUniqueID: 9304400

Diversification of a large genus in a continental biodiversity hotspot: temporal and spatial origin of Muraltia (Polygalaceae) in the Cape of South Africa. Keywords Mesh Terms:

KEYWORDS: Species Specificity

MESH TERMS: genetics

Chemical & Substance for Abstract: Diversification of a large genus in a continental biodiversity hotspot: temporal and spatial origin of Muraltia (Polygalaceae) in the Cape of South Africa. Information

Substance Name: RNA, Ribosomal

Registry Number: 0

Grant and Affiliation Information for Diversification of a large genus in a continental biodiversity hotspot: temporal and spatial origin of Muraltia (Polygalaceae) in the Cape of South Africa.

AFFILIATION: Molecular Systematics Section, Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3DS, UK. f.forest@kew.org

Country: United States

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MEDLINETA: Mol Phylogenet Evol

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