PMID- 23789993
OWN - NLM
STAT- MEDLINE
DCOM- 20140127
LR  - 20161020
IS  - 1480-3321 (Electronic)
IS  - 0831-2796 (Linking)
VI  - 56
IP  - 5
DP  - 2013 May
TI  - What does the 5S rRNA multigene family tell us about the origin of the annual 
      Triticeae (Poaceae)?
PG  - 245-66
LID - 10.1139/gen-2012-0195 [doi]
AB  - We have investigated the complex relationships among the annual genera within the 
      tribe Triticeae through phylogenetic analyses of the 5S rRNA multigene family. 
      Cloned sequences were assigned to groups of orthologous sequences, called unit 
      classes, that were subjected to several analyses including BLAST (Basic Local 
      Alignment Search Tool) searches to assess possible ancestral relationships with 
      perennial genera; phylogenetic analyses using parsimony (Pars), maximum 
      likelihood (ML), and Bayesian methods; and minimum reticulation networks from the 
      Pars, ML, and Bayesian trees. In this study, we included genera with both annual 
      and perennial species, such as Dasypyrum, Hordeum, and Secale. BLAST pointed to 
      Pseudoroegneria (carrier of the St genome) and possibly Thinopyrum (carrier of 
      the J genome) as the potential next of kin. However, Thinopyrum and 
      Pseudoroegneria have never fallen together on the individual trees with the 
      former generally associated with Crithopsis, Aegilops, Triticum, and Dasypyrum, 
      while the latter is usually associated with the rest of the genera within 
      Triticeae. The "long" unit classes placed Dasypyrum breviaristatum together with 
      Dasypyrum villosum, whereas the "short" unit classes put them far apart on the 
      trees. None of the gene trees alone was able to summarize the complex 
      relationships among the genera, in line with previous results in the Triticeae. 
      However, the application of tools designed to display phylogenetic networks was 
      able to depict the complex links among the genera based on the short and the long 
      gene trees, including the close link between Thinopyrum and Pseudoroegneria 
      suggested by the phylogenetic analyses. In addition, our analyses provide support 
      for the hypothesis that at least some annual Triticeae taxa are derived from 
      their perennial relatives.
FAU - Baum, B R
AU  - Baum BR
AD  - Agriculture and Agri-Food Canada, Eastern Cereal and Oilseed Research Centre, 
      Neatby Building, 960 Carling Avenue, Ottawa, ON K1A 0C6, Canada. 
      Bernard.baum@agr.gc.ca
FAU - Edwards, T
AU  - Edwards T
FAU - Johnson, D A
AU  - Johnson DA
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20130503
PL  - Canada
TA  - Genome
JT  - Genome
JID - 8704544
RN  - 0 (RNA, Ribosomal, 5S)
SB  - IM
MH  - Evolution, Molecular
MH  - Genes, Plant
MH  - Multigene Family
MH  - *Phylogeny
MH  - Poaceae/classification/*genetics
MH  - RNA, Ribosomal, 5S/*genetics
EDAT- 2013/06/26 06:00
MHDA- 2014/01/28 06:00
CRDT- 2013/06/25 06:00
PHST- 2013/06/25 06:00 [entrez]
PHST- 2013/06/26 06:00 [pubmed]
PHST- 2014/01/28 06:00 [medline]
AID - 10.1139/gen-2012-0195 [doi]
PST - ppublish
SO  - Genome. 2013 May;56(5):245-66. doi: 10.1139/gen-2012-0195. Epub 2013 May 3.