PMID- 19289175
OWN - NLM
STAT- MEDLINE
DCOM- 20090529
LR  - 20090511
IS  - 1095-9513 (Electronic)
IS  - 1055-7903 (Linking)
VI  - 51
IP  - 3
DP  - 2009 Jun
TI  - Phylogenetic relationships among diploid species of Symphyotrichum (Asteraceae: 
      Astereae) based on two nuclear markers, ITS and GAPDH.
PG  - 540-53
LID - 10.1016/j.ympev.2009.03.003 [doi]
AB  - The mostly North American subtribe Symphyotrichinae (Asteraceae: Astereae) 
      comprises Canadanthus, Ampelaster, Psilactis, Almutaster, and Symphyotrichum. 
      Intergeneric and interspecific relationships within the subtribe have been 
      investigated in the past, particularly by Nesom [Nesom, G.L., 1994. Review of the 
      taxonomy of Aster sensu lato (Asteraceae: Astereae), emphasizing the new world 
      species, Phytologia 77, 141-297] and Semple [Semple, J.C., 2005. Classification 
      of Symphyotrichum. Available from: 
      <http://www.jcsemple.uwaterloo.ca/Symphyotrichumclassification.htm/>], using 
      morphological and cytological approaches. Symphyotrichum is the largest and most 
      complex genus within the subtribe and includes four subgenera: Symphyotrichum 
      (x=7, 8), Virgulus (x=4, 5), Astropolium (x=5), and Chapmaniani (x=7). In this 
      study we used two nuclear markers, the nrDNA internal transcribed spacer (ITS) 
      and the low-copy nuclear gene glyceraldehyde 3-phosphate dehydrogenase (GAPDH), 
      to resolve intergeneric and interspecific relationships within the subtribe at 
      the diploid level, and to determine whether our phylogenies validate the 
      classifications of Nesom or Semple. Our results confirm the distinct generic 
      status of Canadanthus and Ampelaster, whereas Psilactis and Almutaster form a 
      polytomy with Symphyotrichum. Within Symphyotrichum, subg. Virgulus is 
      monophyletic based on ITS and appears polyphyletic based on GAPDH. Neither the 
      ITS nor the GAPDH analyses support a distinct status for subg. Astropolium, which 
      groups within subg. Symphyotrichum. In general, interspecific relationships 
      within Symphyotrichum are unresolved. Lack of resolution may be interpreted as a 
      case of recent and rapid evolutionary radiation.
FAU - Vaezi, Jamil
AU  - Vaezi J
AD  - Dep Sciences Biologiques, Herbier Marie-Victorin, Institut de recherche en 
      Biologie Vegetale Universite de Montreal, Montreal, Que, Canada. 
      jamil.vaezi@umontreal.ca
FAU - Brouillet, Luc
AU  - Brouillet L
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20090314
PL  - United States
TA  - Mol Phylogenet Evol
JT  - Molecular phylogenetics and evolution
JID - 9304400
RN  - 0 (DNA, Plant)
RN  - 0 (DNA, Ribosomal Spacer)
RN  - EC 1.2.1.- (Glyceraldehyde-3-Phosphate Dehydrogenases)
SB  - IM
MH  - Asteraceae/classification/*genetics
MH  - Cell Nucleus/genetics
MH  - DNA, Plant/genetics
MH  - DNA, Ribosomal Spacer/*genetics
MH  - Diploidy
MH  - *Evolution, Molecular
MH  - Genes, Plant
MH  - Glyceraldehyde-3-Phosphate Dehydrogenases/*genetics
MH  - Models, Genetic
MH  - *Phylogeny
MH  - Sequence Alignment
MH  - Sequence Analysis, DNA
MH  - Species Specificity
EDAT- 2009/03/18 09:00
MHDA- 2009/05/30 09:00
CRDT- 2009/03/18 09:00
PHST- 2008/09/19 00:00 [received]
PHST- 2009/02/15 00:00 [revised]
PHST- 2009/03/06 00:00 [accepted]
PHST- 2009/03/18 09:00 [entrez]
PHST- 2009/03/18 09:00 [pubmed]
PHST- 2009/05/30 09:00 [medline]
AID - S1055-7903(09)00064-5 [pii]
AID - 10.1016/j.ympev.2009.03.003 [doi]
PST - ppublish
SO  - Mol Phylogenet Evol. 2009 Jun;51(3):540-53. doi: 10.1016/j.ympev.2009.03.003. 
      Epub 2009 Mar 14.