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Citation for Study 14798

Citation title: "Analyses of amplified fragment length polymorphism (AFLP) indicate rapid radiation of Diospyros species (Ebenaceae) endemic to New Caledonia".

Study name: "Analyses of amplified fragment length polymorphism (AFLP) indicate rapid radiation of Diospyros species (Ebenaceae) endemic to New Caledonia".

This study is part of submission 14798 (Status: Published).

Citation

Turner B., Paun O., Munzinger J., Duangjai S., Chase M., & Samuel R. 2013. Analyses of amplified fragment length polymorphism (AFLP) indicate rapid radiation of Diospyros species (Ebenaceae) endemic to New Caledonia. BMC Evolutionary Biology, 13.

Authors

• Turner B. (submitter) 0043427754163
• Paun O.
• Munzinger J.
• Duangjai S.
• Chase M.
• Samuel R.

Abstract

Background Radiation in some plant groups has occurred on islands and due to the characteristic rapid pace of phenotypic evolution, standard molecular markers often provide insufficient variation for phylogenetic reconstruction. To resolve relationships within a clade of 21 closely related New Caledonian Diospyros species and evaluate species boundaries we analysed genome-wide DNA variation via amplified fragment length polymorphisms (AFLP). Results A neighbour-joining (NJ) dendrogram based on Dice distances shows all species except D. minimifolia, D. parviflora and D. vieillardii to form unique clusters of genetically similar accessions. However, there was little variation between these species clusters, resulting in unresolved species relationships and a star-like general NJ topology. Correspondingly, analyses of molecular variance showed more variation within species than between them. A Bayesian analysis with BEAST produced a similar result. Another Bayesian method, this time a clustering method, STRUCTURE, demonstrated the presence of two groups, highly congruent with those observed in a principal coordinate analysis (PCO). Molecular divergence between the two groups is low and does not correspond to any hypothesised taxonomic, ecological or geographical patterns. Conclusions We hypothesise that such a pattern could have been produced by rapid and complex evolution involving a widespread progenitor for which an initial split into two groups was followed by subsequent fragmentation into many diverging populations, which was followed by range expansion of then divergent entities. Overall, this process resulted in an opportunistic pattern of phenotypic diversification. The time since divergence was probably insufficient for some species to become genetically well-differentiated, resulting in progenitor/derivative relationships being exhibited in a few cases. In other cases, our analyses may have revealed evidence for the existence of cryptic species, for which more study of morphology and ecology are now required.

Keywords

Cryptic species, island flora, morphological diversification, progenitor/derivative relationships, species radiation, woody plants

External links

• DOI: 10.1186/1471-2148-13-269
• Other URL: http://www.biomedcentral.com/1471-2148/13/269

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S14798
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref22447,
  	 author = {Barbara  Turner and Ovidiu  Paun and Jérôme  Munzinger and Sutee  Duangjai and Mark W.  Chase and Rosabelle  Samuel},
  	 title = {Analyses of amplified fragment length polymorphism (AFLP) indicate rapid radiation of Diospyros species (Ebenaceae) endemic to New Caledonia},
  	 year = {2013},
  	 keywords = {Cryptic species, island flora, morphological diversification, progenitor/derivative relationships, species radiation, woody plants},
  	 doi = {10.1186/1471-2148-13-269},
  	 url = {http://www.biomedcentral.com/1471-2148/13/269},
  	 pmid = {},
  	 journal = {BMC Evolutionary Biology},
  	 volume = {13},
  	 number = {},
  	 pages = {},
  	 abstract = {Background
  Radiation in some plant groups has occurred on islands and due to the characteristic rapid pace of phenotypic evolution, standard molecular markers often provide insufficient variation for phylogenetic reconstruction. To resolve relationships within a clade of 21 closely related New Caledonian Diospyros species and evaluate species boundaries we analysed genome-wide DNA variation via amplified fragment length polymorphisms (AFLP).
  Results
  A neighbour-joining (NJ) dendrogram based on Dice distances shows all species except D. minimifolia, D. parviflora and D. vieillardii to form unique clusters of genetically similar accessions. However, there was little variation between these species clusters, resulting in unresolved species relationships and a star-like general NJ topology. Correspondingly, analyses of molecular variance showed more variation within species than between them. A Bayesian analysis with BEAST produced a similar result. Another Bayesian method, this time a clustering method, STRUCTURE, demonstrated the presence of two groups, highly congruent with those observed in a principal coordinate analysis (PCO). Molecular divergence between the two groups is low and does not correspond to any hypothesised taxonomic, ecological or geographical patterns.
  Conclusions
  We hypothesise that such a pattern could have been produced by rapid and complex evolution involving a widespread progenitor for which an initial split into two groups was followed by subsequent fragmentation into many diverging populations, which was followed by range expansion of then divergent entities. Overall, this process resulted in an opportunistic pattern of phenotypic diversification. The time since divergence was probably insufficient for some species to become genetically well-differentiated, resulting in progenitor/derivative relationships being exhibited in a few cases. In other cases, our analyses may have revealed evidence for the existence of cryptic species, for which more study of morphology and ecology are now required.}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 22447
  AU  - Turner,Barbara 
  AU  - Paun,Ovidiu 
  AU  - Munzinger,Jérôme 
  AU  - Duangjai,Sutee 
  AU  - Chase,Mark W. 
  AU  - Samuel,Rosabelle 
  T1  - Analyses of amplified fragment length polymorphism (AFLP) indicate rapid radiation of Diospyros species (Ebenaceae) endemic to New Caledonia
  PY  - 2013
  KW  - Cryptic species
  KW  - island flora
  KW  - morphological diversification
  KW  - progenitor/derivative relationships
  KW  - species radiation
  KW  - woody plants
  UR  - http://www.biomedcentral.com/1471-2148/13/269
  N2  - Background
  Radiation in some plant groups has occurred on islands and due to the characteristic rapid pace of phenotypic evolution, standard molecular markers often provide insufficient variation for phylogenetic reconstruction. To resolve relationships within a clade of 21 closely related New Caledonian Diospyros species and evaluate species boundaries we analysed genome-wide DNA variation via amplified fragment length polymorphisms (AFLP).
  Results
  A neighbour-joining (NJ) dendrogram based on Dice distances shows all species except D. minimifolia, D. parviflora and D. vieillardii to form unique clusters of genetically similar accessions. However, there was little variation between these species clusters, resulting in unresolved species relationships and a star-like general NJ topology. Correspondingly, analyses of molecular variance showed more variation within species than between them. A Bayesian analysis with BEAST produced a similar result. Another Bayesian method, this time a clustering method, STRUCTURE, demonstrated the presence of two groups, highly congruent with those observed in a principal coordinate analysis (PCO). Molecular divergence between the two groups is low and does not correspond to any hypothesised taxonomic, ecological or geographical patterns.
  Conclusions
  We hypothesise that such a pattern could have been produced by rapid and complex evolution involving a widespread progenitor for which an initial split into two groups was followed by subsequent fragmentation into many diverging populations, which was followed by range expansion of then divergent entities. Overall, this process resulted in an opportunistic pattern of phenotypic diversification. The time since divergence was probably insufficient for some species to become genetically well-differentiated, resulting in progenitor/derivative relationships being exhibited in a few cases. In other cases, our analyses may have revealed evidence for the existence of cryptic species, for which more study of morphology and ecology are now required.
  L3  - 10.1186/1471-2148-13-269
  JF  - BMC Evolutionary Biology
  VL  - 13
  IS  - 
  ER  -