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Unraveling extensive paraphyly in the genus Hydrangea s.l. with implications for the systematics of tribe Hydrangeeae

Marie-Stéphanie Samain UGent, Stefan Wanke and Paul Goetghebeur UGent (2010) SYSTEMATIC BOTANY. 35(3). p.593-600
abstract
Several representatives of Hydrangeaceae tribe Hydrangeeae are very popular in the horticultural trade for their inflorescences with attractive marginal flowers, resulting in many hybrids and cultivars. However, despite previous morphological and molecular studies, the phylogenetic relationships between the nine currently recognized genera in this clade are still largely unclear, and the widely used infrageneric classification of the genus Hydrangea by McClintock (which was mainly based on the study of herbarium specimens) requires critical reevaluation. We present a partially well resolved and well supported phylogeny of the tribe Hydrangeeae based on maximum parsimony and Bayesian analyses of multiple coding and non-coding chloroplast regions (rps16-trnK spacer, trnK intron, trnK exon, matK gene and trnK-psbA spacer). All genera, sections and subsections were included making it a highly representative sampling for the tribe Hydrangeeae. Hydrangea is paraphyletic with respect to the eight other genera of Hydrangeeae, requiring a classification update. The subsections Heteromallae and Petalanthe of section Hydrangea are monophyletic, the subsections Americanae, Asperae and Macrophyllae are paraphyletic. Of the two subsections of section Cornidia, one, Polysegia, is monophyletic whereas the other Monosegia, is paraphyletic. The necessary nomenclatural changes based on these results might have a certain effect in the trade but also might encourage breeders to produce “intergeneric” hybrids between traditionally recognized genera in Hydrangeeae.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
infrageneric classification, Hydrangea, phylogeny, chloroplast regions, Hydrangeeae, Hydrangeaceae, RBCL SEQUENCE DATA, PHYLOGENETIC ANALYSIS, MORPHOLOGICAL DATA, MATK GENE, ANGIOSPERMS, EVOLUTION, INFERENCE, CORNALES, TORTOISE, REVEAL
journal title
SYSTEMATIC BOTANY
Syst. Bot.
volume
35
issue
3
pages
593 - 600
Web of Science type
Article
Web of Science id
000281623200014
JCR category
PLANT SCIENCES
JCR impact factor
1.897 (2010)
JCR rank
62/185 (2010)
JCR quartile
2 (2010)
ISSN
0363-6445
DOI
10.1600/036364410792495827
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
1038651
handle
http://hdl.handle.net/1854/LU-1038651
date created
2010-09-08 16:00:18
date last changed
2017-05-10 09:01:22
@article{1038651,
  abstract     = {Several representatives of Hydrangeaceae tribe Hydrangeeae are very popular in the horticultural trade for their inflorescences with attractive marginal flowers, resulting in many hybrids and cultivars. However, despite previous morphological and molecular studies, the phylogenetic relationships between the nine currently recognized genera in this clade are still largely unclear, and the widely used infrageneric classification of the genus Hydrangea by McClintock (which was mainly based on the study of herbarium specimens) requires critical reevaluation. We present a partially well resolved and well supported phylogeny of the tribe Hydrangeeae based on maximum parsimony and Bayesian analyses of multiple coding and non-coding chloroplast regions (rps16-trnK spacer, trnK intron, trnK exon, matK gene and trnK-psbA spacer). All genera, sections and subsections were included making it a highly representative sampling for the tribe Hydrangeeae. Hydrangea is paraphyletic with respect to the eight other genera of Hydrangeeae, requiring a classification update.  The subsections Heteromallae and Petalanthe of section Hydrangea are monophyletic, the subsections Americanae, Asperae and Macrophyllae are paraphyletic. Of the two subsections of section Cornidia, one, Polysegia, is monophyletic whereas the other Monosegia, is paraphyletic. The necessary nomenclatural changes based on these results might have a certain effect in the trade but also might encourage breeders to produce {\textquotedblleft}intergeneric{\textquotedblright} hybrids between traditionally recognized genera in Hydrangeeae.},
  author       = {Samain, Marie-St{\'e}phanie and Wanke, Stefan and Goetghebeur, Paul},
  issn         = {0363-6445},
  journal      = {SYSTEMATIC BOTANY},
  keyword      = {infrageneric classification,Hydrangea,phylogeny,chloroplast regions,Hydrangeeae,Hydrangeaceae,RBCL SEQUENCE DATA,PHYLOGENETIC ANALYSIS,MORPHOLOGICAL DATA,MATK GENE,ANGIOSPERMS,EVOLUTION,INFERENCE,CORNALES,TORTOISE,REVEAL},
  language     = {eng},
  number       = {3},
  pages        = {593--600},
  title        = {Unraveling extensive paraphyly in the genus Hydrangea s.l. with implications for the systematics of tribe Hydrangeeae},
  url          = {http://dx.doi.org/10.1600/036364410792495827},
  volume       = {35},
  year         = {2010},
}

Chicago
Samain, Marie-Stéphanie, Stefan Wanke, and Paul Goetghebeur. 2010. “Unraveling Extensive Paraphyly in the Genus Hydrangea S.l. with Implications for the Systematics of Tribe Hydrangeeae.” Systematic Botany 35 (3): 593–600.
APA
Samain, M.-S., Wanke, S., & Goetghebeur, P. (2010). Unraveling extensive paraphyly in the genus Hydrangea s.l. with implications for the systematics of tribe Hydrangeeae. SYSTEMATIC BOTANY, 35(3), 593–600.
Vancouver
1.
Samain M-S, Wanke S, Goetghebeur P. Unraveling extensive paraphyly in the genus Hydrangea s.l. with implications for the systematics of tribe Hydrangeeae. SYSTEMATIC BOTANY. 2010;35(3):593–600.
MLA
Samain, Marie-Stéphanie, Stefan Wanke, and Paul Goetghebeur. “Unraveling Extensive Paraphyly in the Genus Hydrangea S.l. with Implications for the Systematics of Tribe Hydrangeeae.” SYSTEMATIC BOTANY 35.3 (2010): 593–600. Print.