PMID- 15737585
OWN - NLM
STAT- MEDLINE
DCOM- 20050927
LR  - 20061115
IS  - 1055-7903 (Print)
IS  - 1055-7903 (Linking)
VI  - 35
IP  - 1
DP  - 2005 Apr
TI  - Nuclear ribosomal DNA and karyotypes indicate a NW African origin of South 
      American Hypochaeris (Asteraceae, Cichorieae).
PG  - 102-16
AB  - Hypochaeris has a disjunct distribution, with more than 15 species in the 
      Mediterranean region, the Canary Islands, Europe, and Asia, and more than 40 
      species in South America. Previous studies have suggested that the New World taxa 
      have evolved from ancestors similar to the central European H. maculata. Based on 
      internal transcribed spacer (ITS) sequences and fluorescence in situ 
      hybridization (FISH) with 5S and 18S-25S rDNA of the previously overlooked 
      Hypochaeris angustifolia from Moyen Atlas, Morocco, we show that it is sister to 
      the entire South American group. A biogeographic analysis supports the hypothesis 
      of long-distance dispersal from NW Africa across the Atlantic Ocean for the 
      origin of the South American taxa rather than migration from North America, 
      through the Panamian land bridge, followed by subsequent extinction in North 
      America. With the assumption of a molecular clock, the trans-Atlantic dispersal 
      from NW Africa to South America is roughly estimated to have taken place during 
      Pliocene or Pleistocene.
FAU - Tremetsberger, Karin
AU  - Tremetsberger K
AD  - Department of Higher Plant Systematics and Evolution, Institute of Botany, 
      University of Vienna, Rennweg 14, A-1030 Vienna, Austria. k.tremetsberger@gmx.net
FAU - Weiss-Schneeweiss, Hanna
AU  - Weiss-Schneeweiss H
FAU - Stuessy, Tod
AU  - Stuessy T
FAU - Samuel, Rosabelle
AU  - Samuel R
FAU - Kadlec, Gertrud
AU  - Kadlec G
FAU - Ortiz, Maria Angeles
AU  - Ortiz MA
FAU - Talavera, Salvador
AU  - Talavera S
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - Mol Phylogenet Evol
JT  - Molecular phylogenetics and evolution
JID - 9304400
RN  - 0 (DNA, Ribosomal)
SB  - IM
MH  - Asteraceae/*genetics
MH  - DNA, Ribosomal/*genetics
MH  - In Situ Hybridization, Fluorescence
MH  - Karyotyping
MH  - Phylogeny
EDAT- 2005/03/02 09:00
MHDA- 2005/09/28 09:00
CRDT- 2005/03/02 09:00
PHST- 2004/02/24 00:00 [received]
PHST- 2004/10/07 00:00 [revised]
PHST- 2004/12/21 00:00 [accepted]
PHST- 2005/03/02 09:00 [pubmed]
PHST- 2005/09/28 09:00 [medline]
PHST- 2005/03/02 09:00 [entrez]
AID - S1055-7903(04)00411-7 [pii]
AID - 10.1016/j.ympev.2004.12.022 [doi]
PST - ppublish
SO  - Mol Phylogenet Evol. 2005 Apr;35(1):102-16. doi: 10.1016/j.ympev.2004.12.022.