File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Molecular phylogenetics and historical biogeography of the Meiogyne-Fitzalania clade (Annonaceae): Generic paraphyly and late Miocene-Pliocene diversification in Australasia and the Pacific

TitleMolecular phylogenetics and historical biogeography of the Meiogyne-Fitzalania clade (Annonaceae): Generic paraphyly and late Miocene-Pliocene diversification in Australasia and the Pacific
Authors
KeywordsAustralia
Biogeography
Fitzalania
Meiogyne
New Caledonia
Phylogenetics
Issue Date2012
PublisherInternational Association for Plant Taxonomy. The Journal's web site is located at http://www.iapt-taxon.org/
Citation
Taxon, 2012, v. 61 n. 3, p. 559-575 How to Cite?
AbstractMeiogyne (Annonaceae) comprises 15 species of trees and shrubs distributed in India, Indomalaya and Australasia- Pacific. Previous molecular phylogenetic analyses, based on limited taxon sampling, have indicated that the small genus Fitzalania (2 spp.) is nested within Meiogyne. The centre of diversity of the Meiogyne-Fitzalania group lies in Australia (6 spp.) and New Caledonia (4 spp.); this is unique in Annonaceae, some of whose Australian and New Caledonian lineages have been hypothesised to have originated in situ from Gondwanan ancestors. Phylogenetic reconstructions based on chloroplast DNA sequence data of 19 accessions, representing 14 of the 17 species in the Meiogyne-Fitzalania group (ca. 8.6 kb) as well as 67 representatives of all major clades of Annonaceae (ca. 5.1 kb), were performed to clarify the phylogenetic relationships of Meiogyne and Fitzalania. The results show that Fitzalania is deeply nested within an Australasian-Pacific clade of Meiogyne species. The inclusion of species assigned to Chieniodendron and Oncodostigma in Meiogyne, as proposed in the most recent revision of Meiogyne, is also corroborated. Fossil-calibrated molecular divergence estimates under an uncorrelated-rates relaxed molecular clock model were used to investigate the timing of the crown group diversification. The Meiogyne crown group was inferred to have originated in the late Oligocene or Miocene, and initially diversified in continental Southeast Asia, western Malesia and the Philippines. All Australasian-Pacific taxa formed a single derived clade, and most diversification within this clade occurred in the late Miocene and Pliocene. A complex combination of factors such as fragmentation of once wider distribution areas due to climate fluctuations and subsequent vicariance, range expansion by dispersal to Pacific islands and subsequent differentiation, and ecological adaptation to local climatic and edaphic habitat conditions is hypothesised to underlie the diversification of Meiogyne in Australasia and the Pacific.
Persistent Identifierhttp://hdl.handle.net/10722/153208
ISSN
2015 Impact Factor: 2.907
2015 SCImago Journal Rankings: 1.007
References

 

DC FieldValueLanguage
dc.contributor.authorThomas, DCen_HK
dc.contributor.authorSurveswaran, Sen_HK
dc.contributor.authorXue, Ben_HK
dc.contributor.authorSankowsky, Gen_HK
dc.contributor.authorMols, JBen_HK
dc.contributor.authorPaul, JAKeßleren_HK
dc.contributor.authorSaunders, RMKen_HK
dc.date.accessioned2012-07-16T09:59:50Z-
dc.date.available2012-07-16T09:59:50Z-
dc.date.issued2012en_HK
dc.identifier.citationTaxon, 2012, v. 61 n. 3, p. 559-575en_HK
dc.identifier.issn0040-0262en_HK
dc.identifier.urihttp://hdl.handle.net/10722/153208-
dc.description.abstractMeiogyne (Annonaceae) comprises 15 species of trees and shrubs distributed in India, Indomalaya and Australasia- Pacific. Previous molecular phylogenetic analyses, based on limited taxon sampling, have indicated that the small genus Fitzalania (2 spp.) is nested within Meiogyne. The centre of diversity of the Meiogyne-Fitzalania group lies in Australia (6 spp.) and New Caledonia (4 spp.); this is unique in Annonaceae, some of whose Australian and New Caledonian lineages have been hypothesised to have originated in situ from Gondwanan ancestors. Phylogenetic reconstructions based on chloroplast DNA sequence data of 19 accessions, representing 14 of the 17 species in the Meiogyne-Fitzalania group (ca. 8.6 kb) as well as 67 representatives of all major clades of Annonaceae (ca. 5.1 kb), were performed to clarify the phylogenetic relationships of Meiogyne and Fitzalania. The results show that Fitzalania is deeply nested within an Australasian-Pacific clade of Meiogyne species. The inclusion of species assigned to Chieniodendron and Oncodostigma in Meiogyne, as proposed in the most recent revision of Meiogyne, is also corroborated. Fossil-calibrated molecular divergence estimates under an uncorrelated-rates relaxed molecular clock model were used to investigate the timing of the crown group diversification. The Meiogyne crown group was inferred to have originated in the late Oligocene or Miocene, and initially diversified in continental Southeast Asia, western Malesia and the Philippines. All Australasian-Pacific taxa formed a single derived clade, and most diversification within this clade occurred in the late Miocene and Pliocene. A complex combination of factors such as fragmentation of once wider distribution areas due to climate fluctuations and subsequent vicariance, range expansion by dispersal to Pacific islands and subsequent differentiation, and ecological adaptation to local climatic and edaphic habitat conditions is hypothesised to underlie the diversification of Meiogyne in Australasia and the Pacific.en_HK
dc.languageengen_US
dc.publisherInternational Association for Plant Taxonomy. The Journal's web site is located at http://www.iapt-taxon.org/en_HK
dc.relation.ispartofTaxonen_HK
dc.subjectAustraliaen_HK
dc.subjectBiogeographyen_HK
dc.subjectFitzalaniaen_HK
dc.subjectMeiogyneen_HK
dc.subjectNew Caledoniaen_HK
dc.subjectPhylogeneticsen_HK
dc.titleMolecular phylogenetics and historical biogeography of the Meiogyne-Fitzalania clade (Annonaceae): Generic paraphyly and late Miocene-Pliocene diversification in Australasia and the Pacificen_HK
dc.typeArticleen_HK
dc.identifier.emailSurveswaran, S: sid1@hkucc.hku.hken_HK
dc.identifier.emailSaunders, RMK: saunders@hkucc.hku.hken_HK
dc.identifier.authoritySurveswaran, S=rp00783en_HK
dc.identifier.authoritySaunders, RMK=rp00774en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-84862324399en_HK
dc.identifier.hkuros200463en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84862324399&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume61en_HK
dc.identifier.issue3en_HK
dc.identifier.spage559en_HK
dc.identifier.epage575en_HK
dc.publisher.placeAustriaen_HK
dc.identifier.scopusauthoridThomas, DC=25628765500en_HK
dc.identifier.scopusauthoridSurveswaran, S=15766021500en_HK
dc.identifier.scopusauthoridXue, B=43161525700en_HK
dc.identifier.scopusauthoridSankowsky, G=6602954290en_HK
dc.identifier.scopusauthoridMols, JB=6603902690en_HK
dc.identifier.scopusauthoridPaul, JAKeßler=55253345300en_HK
dc.identifier.scopusauthoridSaunders, RMK=35345489600en_HK

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats