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Citation for Study 11014

Citation title: "Phylogeny and Biogeography of Ivies (Hedera spp., Araliaceae), a Polyploid Complex of Woody Vines".

Study name: "Phylogeny and Biogeography of Ivies (Hedera spp., Araliaceae), a Polyploid Complex of Woody Vines".

This study is part of submission 11004 (Status: Published).

Citation

Green A.F., Ramsey T.S., & Ramsey J. 2010. Phylogeny and Biogeography of Ivies (Hedera spp., Araliaceae), a Polyploid Complex of Woody Vines. Systematic Botany, .

Authors

• Green A.F.
• Ramsey T.S.
• Ramsey J.

Abstract

Ivy (Hedera spp., Araliaceae) is a polyploid complex of woody vines. Native to Eurasia and northern Africa, ivy is cultivated worldwide and has become an aggressive invader of North American forests. Despite its ecological impacts and economic significance to the horticultural industry, the taxonomy of Hedera is controversial and historical relationships are poorly defined. Here we characterize the phylogeny of Hedera based on the low-copy nuclear locus Granule-Bound Starch Synthase I (GBSSI) and twelve noncoding cpDNA regions. Maximum parsimony and Bayesian analyses of both data sets generally identified Hedera as monophyletic. For GBSSI, we isolated eighteen haplotypes that were widely shared across species. There was no evidence of fixed heterozygosity or haplotype additivity in polyploids, suggesting a possible autopolyploid origin. For cpDNA, we isolated sixteen haplotypes that were highly structured by geography. Haplotype diversity and phylogenetic structure were greatest in northern Africa and southern Europe. Thus, while most members of the Araliaceae reside in tropical and subtropical Asia, the early diversification of Hedera probably occurred in the Mediterranean Basin. Geographically-structured clades included diploid and polyploid species, suggesting that genome duplication has occurred repeatedly in the genus. Closely-related ivies often differed in leaf size and trichome morphology, indicating evolutionary lability of traits traditionally used for classification. Nonetheless, we recovered similar or identical DNA sequences within morphologically-defined species. Notable exceptions included southern populations of H. helix (H. helix subsp. caucasigena and H. helix subsp. rhizomatifera) that had cpDNA haplotypes distinct from those of central and northern Europe (H. helix subsp. helix).

Keywords

chloroplast DNA, chromosome evolution, low-copy nuclear gene, molecular systematics, phylogeography

External links

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S11014
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref19322,
  	 author = {Adam F Green and Tara S Ramsey and Justin  Ramsey},
  	 title = {Phylogeny and Biogeography of Ivies (Hedera spp., Araliaceae),  a Polyploid Complex of Woody Vines},
  	 year = {2010},
  	 keywords = {chloroplast DNA, chromosome evolution, low-copy nuclear gene, molecular systematics, phylogeography},
  	 doi = {},
  	 url = {http://},
  	 pmid = {},
  	 journal = {Systematic Botany},
  	 volume = {},
  	 number = {},
  	 pages = {},
  	 abstract = {Ivy (Hedera spp., Araliaceae) is a polyploid complex of woody vines.  Native to Eurasia and northern Africa, ivy is cultivated worldwide and has become an aggressive invader of North American forests.  Despite its ecological impacts and economic significance to the horticultural industry, the taxonomy of Hedera is controversial and historical relationships are poorly defined.  Here we characterize the phylogeny of Hedera based on the low-copy nuclear locus Granule-Bound Starch Synthase I (GBSSI) and twelve noncoding cpDNA regions.  Maximum parsimony and Bayesian analyses of both data sets generally identified Hedera as monophyletic.  For GBSSI, we isolated eighteen haplotypes that were widely shared across species.  There was no evidence of fixed heterozygosity or haplotype additivity in polyploids, suggesting a possible autopolyploid origin.  For cpDNA, we isolated sixteen haplotypes that were highly structured by geography.  Haplotype diversity and phylogenetic structure were greatest in northern Africa and southern Europe.  Thus, while most members of the Araliaceae reside in tropical and subtropical Asia, the early diversification of Hedera probably occurred in the Mediterranean Basin.  Geographically-structured clades included diploid and polyploid species, suggesting that genome duplication has occurred repeatedly in the genus.  Closely-related ivies often differed in leaf size and trichome morphology, indicating evolutionary lability of traits traditionally used for classification.  Nonetheless, we recovered similar or identical DNA sequences within morphologically-defined species.  Notable exceptions included southern populations of H. helix (H. helix subsp. caucasigena and H. helix subsp. rhizomatifera) that had cpDNA haplotypes distinct from those of central and northern Europe (H. helix subsp. helix).}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 19322
  AU  - Green,Adam F
  AU  - Ramsey,Tara S
  AU  - Ramsey,Justin 
  T1  - Phylogeny and Biogeography of Ivies (Hedera spp., Araliaceae),  a Polyploid Complex of Woody Vines
  PY  - 2010
  KW  - chloroplast DNA
  KW  - chromosome evolution
  KW  - low-copy nuclear gene
  KW  - molecular systematics
  KW  - phylogeography
  UR  - http://dx.doi.org/
  N2  - Ivy (Hedera spp., Araliaceae) is a polyploid complex of woody vines.  Native to Eurasia and northern Africa, ivy is cultivated worldwide and has become an aggressive invader of North American forests.  Despite its ecological impacts and economic significance to the horticultural industry, the taxonomy of Hedera is controversial and historical relationships are poorly defined.  Here we characterize the phylogeny of Hedera based on the low-copy nuclear locus Granule-Bound Starch Synthase I (GBSSI) and twelve noncoding cpDNA regions.  Maximum parsimony and Bayesian analyses of both data sets generally identified Hedera as monophyletic.  For GBSSI, we isolated eighteen haplotypes that were widely shared across species.  There was no evidence of fixed heterozygosity or haplotype additivity in polyploids, suggesting a possible autopolyploid origin.  For cpDNA, we isolated sixteen haplotypes that were highly structured by geography.  Haplotype diversity and phylogenetic structure were greatest in northern Africa and southern Europe.  Thus, while most members of the Araliaceae reside in tropical and subtropical Asia, the early diversification of Hedera probably occurred in the Mediterranean Basin.  Geographically-structured clades included diploid and polyploid species, suggesting that genome duplication has occurred repeatedly in the genus.  Closely-related ivies often differed in leaf size and trichome morphology, indicating evolutionary lability of traits traditionally used for classification.  Nonetheless, we recovered similar or identical DNA sequences within morphologically-defined species.  Notable exceptions included southern populations of H. helix (H. helix subsp. caucasigena and H. helix subsp. rhizomatifera) that had cpDNA haplotypes distinct from those of central and northern Europe (H. helix subsp. helix).
  L3  - 
  JF  - Systematic Botany
  VL  - 
  IS  - 
  ER  -