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Citation for Study 11418

Citation title: "Monophyly and phylogenetic relationships of Neotropical Schefflera (Araliaceae) based on plastid and nuclear markers".

Study name: "Monophyly and phylogenetic relationships of Neotropical Schefflera (Araliaceae) based on plastid and nuclear markers".

This study is part of submission 11408 (Status: Published).

Citation

Fiaschi P., & Plunkett G. 2011. Monophyly and phylogenetic relationships of Neotropical Schefflera (Araliaceae) based on plastid and nuclear markers. Systematic Botany, .

Authors

• Fiaschi P. (submitter)
• Plunkett G.

Abstract

The pantropical genus Schefflera is represented by ca. 300 species in the American tropics, but due to limited sampling of the Neotropical species in previous phylogenetic studies of the genus, the monophyly of this group has remained tentative. To test this, an existing family-wide data set of ITS and trnL-trnF sequences was expanded, and relationships were explored further by assembling new ITS and ETS data sets using a representative sampling from most of the morphological and geographical diversity of the group. These results were also used to test an informal, morphology-based classification of Neotropical Schefflera. Results of the phylogenetic analyses confirm the monophyly of Neotropical Schefflera, and its placement in the Asian Palmate clade of Araliaceae. Four clades were consistently recovered from all analyses, informally called the ?Calyptrate,? ?Tremula,? ?Jahnii,? and ?Eastern South American? clades, each of which corresponds closely to the previously recognized morphological groupings. The Eastern South American clade includes species from the Crepinella and Didymopanax groups, forming two geographically centered subclades (the Guayana Shield and Brazil subclades, respectively). The composition of the Calyptrate clade overlaps considerably with the Neotropical elements of the Sciodaphyllum group, excluding S. tremula. That species, an Hispaniolan endemic, was instead sister to a Puerto Rican species from the Crepinella group (S. gleasonii), providing a third example of geographic structuring among Neotropical Schefflera species

Keywords

Didymopanax, external transcribed spacer, Neotropics, Sciodaphyllum, systematics

External links

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S11418
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref19634,
  	 author = {Pedro  Fiaschi and Gregory M.  Plunkett},
  	 title = {Monophyly and phylogenetic relationships of Neotropical Schefflera (Araliaceae) based on plastid and nuclear markers},
  	 year = {2011},
  	 keywords = {Didymopanax, external transcribed spacer, Neotropics, Sciodaphyllum, systematics},
  	 doi = {},
  	 url = {http://},
  	 pmid = {},
  	 journal = {Systematic Botany},
  	 volume = {},
  	 number = {},
  	 pages = {},
  	 abstract = {The pantropical genus Schefflera is represented by ca. 300 species in the American tropics, but due to limited sampling of the Neotropical species in previous phylogenetic studies of the genus, the monophyly of this group has remained tentative. To test this, an existing family-wide data set of ITS and trnL-trnF sequences was expanded, and relationships were explored further by assembling new ITS and ETS data sets using a representative sampling from most of the morphological and geographical diversity of the group. These results were also used to test an informal, morphology-based classification of Neotropical Schefflera. Results of the phylogenetic analyses confirm the monophyly of Neotropical Schefflera, and its placement in the Asian Palmate clade of Araliaceae. Four clades were consistently recovered from all analyses, informally called the ?Calyptrate,? ?Tremula,? ?Jahnii,? and ?Eastern South American? clades, each of which corresponds closely to the previously recognized morphological groupings. The Eastern South American clade includes species from the Crepinella and Didymopanax groups, forming two geographically centered subclades (the Guayana Shield and Brazil subclades, respectively). The composition of the Calyptrate clade overlaps considerably with the Neotropical elements of the Sciodaphyllum group, excluding S. tremula. That species, an Hispaniolan endemic, was instead sister to a Puerto Rican species from the Crepinella group (S. gleasonii), providing a third example of geographic structuring among Neotropical Schefflera species}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 19634
  AU  - Fiaschi,Pedro 
  AU  - Plunkett,Gregory M. 
  T1  - Monophyly and phylogenetic relationships of Neotropical Schefflera (Araliaceae) based on plastid and nuclear markers
  PY  - 2011
  KW  - Didymopanax
  KW  - external transcribed spacer
  KW  - Neotropics
  KW  - Sciodaphyllum
  KW  - systematics
  UR  - http://dx.doi.org/
  N2  - The pantropical genus Schefflera is represented by ca. 300 species in the American tropics, but due to limited sampling of the Neotropical species in previous phylogenetic studies of the genus, the monophyly of this group has remained tentative. To test this, an existing family-wide data set of ITS and trnL-trnF sequences was expanded, and relationships were explored further by assembling new ITS and ETS data sets using a representative sampling from most of the morphological and geographical diversity of the group. These results were also used to test an informal, morphology-based classification of Neotropical Schefflera. Results of the phylogenetic analyses confirm the monophyly of Neotropical Schefflera, and its placement in the Asian Palmate clade of Araliaceae. Four clades were consistently recovered from all analyses, informally called the ?Calyptrate,? ?Tremula,? ?Jahnii,? and ?Eastern South American? clades, each of which corresponds closely to the previously recognized morphological groupings. The Eastern South American clade includes species from the Crepinella and Didymopanax groups, forming two geographically centered subclades (the Guayana Shield and Brazil subclades, respectively). The composition of the Calyptrate clade overlaps considerably with the Neotropical elements of the Sciodaphyllum group, excluding S. tremula. That species, an Hispaniolan endemic, was instead sister to a Puerto Rican species from the Crepinella group (S. gleasonii), providing a third example of geographic structuring among Neotropical Schefflera species
  L3  - 
  JF  - Systematic Botany
  VL  - 
  IS  - 
  ER  -