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Citation for Study 1670

Citation title: "Phylogeny, diagnostic characters, and generic limitation of Australasian Chrysophylloideae (Sapotaceae, Ericales): Evidence from ITS sequence data and morphology".

This study was previously identified under the legacy study ID S1627 (Status: Published).

Citation

Swenson U., Bartish I., & Munzinger J. 2006. Phylogeny, diagnostic characters, and generic limitation of Australasian Chrysophylloideae (Sapotaceae, Ericales): Evidence from ITS sequence data and morphology. Cladistics, null.

Authors

• Swenson U.
• Bartish I.
• Munzinger J.

Abstract

Current generic limits in Chrysophylloideae (Sapotaceae) from Australia, New Caledonia, and the Pacific islands have been shown not to correspond to monophyletic groups. In particular, revisions of generic boundaries are necessary for Pouteria and Niemeyera. We present the first cladistic study of a large representative sample from these areas based on (1) nuclear ribosomal DNA (nrDNA) sequence data and (2) combined data of nrDNA and morphology. The data was analyzed with parsimony jackknifing using equal weights and gaps coded as binary characters. Our results from the two data sets are highly congruent and morphological data often increase support as well as tree resolution. A basal polytomy prevents hypotheses of intergeneric relationships, but several groups receive strong support, and hence, four segregates of Pouteria (Beccariella, Planchonella, Sersalisia, and Van-royena) are resurrected. Four others, Albertisiella, Bureavella, Iteiluma, and Pyriluma are rejected. Niemeyera is redefined as a small genus confined to Australia. Generic limits within the sister group to Niemeyera are still unclear, a group which includes Leptostylis and Pycnandra. Furthermore, Van-royena may have originated from an intergeneric hybridization event. Traditionally used and newly identified morphological characters are scrutinized for their diagnostic value. For instance, the position of stamen insertion within the corolla tube is a strong indication of generic relationship. Unique synapomorphies are rare and genera must be distinguished on character state combinations. Following the results, several taxonomic combinations are necessary (Beccariella brownlessiana, B. macrocarpa, B. singuliflora, B. vieillardii, Pichonia daenikeri, Planchonella asterocarpon, P. dothioense, P. myrsinifolia, P. myrsinodendron, and P. xylocarpa).

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S1670
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref17730,
  	 author = {Ulf  Swenson and Igor  Bartish and J?r?me  Munzinger},
  	 title = {Phylogeny, diagnostic characters, and generic limitation of Australasian Chrysophylloideae (Sapotaceae, Ericales): Evidence from ITS sequence data and morphology},
  	 year = {2006},
  	 keywords = {},
  	 doi = {},
  	 url = {},
  	 pmid = {},
  	 journal = {Cladistics},
  	 volume = {},
  	 number = {},
  	 pages = {},
  	 abstract = {Current generic limits in Chrysophylloideae (Sapotaceae) from Australia, New Caledonia, and the Pacific islands have been shown not to correspond to monophyletic groups. In particular, revisions of generic boundaries are necessary for Pouteria and Niemeyera. We present the first cladistic study of a large representative sample from these areas based on (1) nuclear ribosomal DNA (nrDNA) sequence data and (2) combined data of nrDNA and morphology. The data was analyzed with parsimony jackknifing using equal weights and gaps coded as binary characters. Our results from the two data sets are highly congruent and morphological data often increase support as well as tree resolution. A basal polytomy prevents hypotheses of intergeneric relationships, but several groups receive strong support, and hence, four segregates of Pouteria (Beccariella, Planchonella, Sersalisia, and Van-royena) are resurrected. Four others, Albertisiella, Bureavella, Iteiluma, and Pyriluma are rejected. Niemeyera is redefined as a small genus confined to Australia. Generic limits within the sister group to Niemeyera are still unclear, a group which includes Leptostylis and Pycnandra. Furthermore, Van-royena may have originated from an intergeneric hybridization event. Traditionally used and newly identified morphological characters are scrutinized for their diagnostic value. For instance, the position of stamen insertion within the corolla tube is a strong indication of generic relationship. Unique synapomorphies are rare and genera must be distinguished on character state combinations. Following the results, several taxonomic combinations are necessary (Beccariella brownlessiana, B. macrocarpa, B. singuliflora, B. vieillardii, Pichonia daenikeri, Planchonella asterocarpon, P. dothioense, P. myrsinifolia, P. myrsinodendron, and P. xylocarpa).}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 17730
  AU  - Swenson,Ulf 
  AU  - Bartish,Igor 
  AU  - Munzinger,J?r?me 
  T1  - Phylogeny, diagnostic characters, and generic limitation of Australasian Chrysophylloideae (Sapotaceae, Ericales): Evidence from ITS sequence data and morphology
  PY  - 2006
  KW  - 
  UR  - 
  N2  - Current generic limits in Chrysophylloideae (Sapotaceae) from Australia, New Caledonia, and the Pacific islands have been shown not to correspond to monophyletic groups. In particular, revisions of generic boundaries are necessary for Pouteria and Niemeyera. We present the first cladistic study of a large representative sample from these areas based on (1) nuclear ribosomal DNA (nrDNA) sequence data and (2) combined data of nrDNA and morphology. The data was analyzed with parsimony jackknifing using equal weights and gaps coded as binary characters. Our results from the two data sets are highly congruent and morphological data often increase support as well as tree resolution. A basal polytomy prevents hypotheses of intergeneric relationships, but several groups receive strong support, and hence, four segregates of Pouteria (Beccariella, Planchonella, Sersalisia, and Van-royena) are resurrected. Four others, Albertisiella, Bureavella, Iteiluma, and Pyriluma are rejected. Niemeyera is redefined as a small genus confined to Australia. Generic limits within the sister group to Niemeyera are still unclear, a group which includes Leptostylis and Pycnandra. Furthermore, Van-royena may have originated from an intergeneric hybridization event. Traditionally used and newly identified morphological characters are scrutinized for their diagnostic value. For instance, the position of stamen insertion within the corolla tube is a strong indication of generic relationship. Unique synapomorphies are rare and genera must be distinguished on character state combinations. Following the results, several taxonomic combinations are necessary (Beccariella brownlessiana, B. macrocarpa, B. singuliflora, B. vieillardii, Pichonia daenikeri, Planchonella asterocarpon, P. dothioense, P. myrsinifolia, P. myrsinodendron, and P. xylocarpa).
  L3  - 
  JF  - Cladistics
  VL  - 
  IS  - 
  ER  -