Ancient divergence and biogeography of Raukaua (Araliaceae) and close relatives in the southern hemisphere

doi:10.1071/SB12020

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	Ancient divergence and biogeography of Raukaua (Araliaceae) and close relatives in the southern hemisphere
	Mitchell, Anthony 1; Li, Rong2 ; Brown, Joseph W.3; Schoenberger, Ines 4; Wen, Jun 5
刊名	AUSTRALIAN SYSTEMATIC BOTANY
	2012-12-14
卷号	25 期号:6 页码:432-446
关键词	Long-distance Dispersal Dna-sequence Data New-zealand Phylogenetic Analysis Goodbye Gondwana Terrestrial Fauna Flowering Plants Mixed Models Evolution Genus
ISSN号	1030-1887
DOI	10.1071/SB12020
通讯作者	Mitchell, A (reprint author), Univ Otago, POB 4345, Christchurch 8140, New Zealand.,anthony.mitchell@otago.ac.nz
文献子类	Article
英文摘要	Molecular genetic analyses were used to reconstruct phylogenetic relationships and estimate divergence times for Raukaua species and their close relatives. A monophyletic group identified as the 'greater Raukaua clade' was circumscribed, with eight representative species; its basal divergence was estimated at c. 70 Mya, possibly after Zealandia had separated from Gondwana. Raukaua is paraphyletic because of the placement of Motherwellia, Cephalaralia, Cheirodendron and Schefflera s.s. The phylogeny supports a more narrowly circumscribed Raukaua that includes the New Zealand but not the South American or Tasmanian representatives. Ancestors of the monophyletic South American and Tasmanian Raukaua and the mainland Australian Motherwellia and Cephalaralia diverged at c. 66 Mya and their current disjunction may be vicariant, with overland dispersal between Australia and South America, possibly via Antarctica. Vicariance is also a likely mechanism for divergence at c. 57 Mya of the monophyletic Motherwellia, Cephalaralia and Tasmanian Raukaua. The common ancestor of New Zealand Raukaua, Cheirodendron and Schefflera s.s. is inferred to have existed c. 62 Mya in New Zealand, before the marine incursions during the Oligocene, implying that New Zealand Raukaua and Schefflera s.s. survived the inundation period or speciated outside New Zealand and subsequently colonised. Ancestors of Cheirodendron split from New Zealand Raukaua c. 43 Mya and dispersed over vast expanses of the south-western Pacific to Hawaii.
学科主题	Plant Sciences ; Evolutionary Biology
WOS关键词	LONG-DISTANCE DISPERSAL ; DNA-SEQUENCE DATA ; NEW-ZEALAND ; PHYLOGENETIC ANALYSIS ; GOODBYE GONDWANA ; TERRESTRIAL FAUNA ; FLOWERING PLANTS ; MIXED MODELS ; EVOLUTION ; GENUS
WOS研究方向	Plant Sciences ; Evolutionary Biology
语种	英语
WOS记录号	WOS:000312314100005
资助机构	John D. and Catherine T. MacArthur Foundation; Natural Science Foundation of China [30828001]; Laboratory of Analytical Biology at the National Museum of Natural History of the Smithsonian Institution
公开日期	2013-01-22
内容类型	期刊论文
源URL	[http://ir.kib.ac.cn:8080/handle/151853/16002]
专题	昆明植物研究所_中国西南野生生物种质资源库
作者单位	1.Univ Otago, Christchurch 8140, New Zealand 2.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming 650204, Yunnan, Peoples R China 3.Univ Idaho, Dept Biol Sci, Moscow, ID 83843 USA 4.Landcare Res, Allan Herbarium CHR, Lincoln 7640, New Zealand 5.Smithsonian Inst, Dept Bot MRC, Washington, DC 20013 USA
推荐引用方式 GB/T 7714	Mitchell, Anthony,Li, Rong,Brown, Joseph W.,et al. Ancient divergence and biogeography of Raukaua (Araliaceae) and close relatives in the southern hemisphere[J]. AUSTRALIAN SYSTEMATIC BOTANY,2012,25(6):432-446.
APA	Mitchell, Anthony,Li, Rong,Brown, Joseph W.,Schoenberger, Ines,&Wen, Jun.(2012).Ancient divergence and biogeography of Raukaua (Araliaceae) and close relatives in the southern hemisphere.AUSTRALIAN SYSTEMATIC BOTANY,25(6),432-446.
MLA	Mitchell, Anthony,et al."Ancient divergence and biogeography of Raukaua (Araliaceae) and close relatives in the southern hemisphere".AUSTRALIAN SYSTEMATIC BOTANY 25.6(2012):432-446.