Arid
DOI10.12705/653.4
A widespread radiation in the Periplocoideae (Apocynaceae): The case of Cryptolepis
Joubert, Lize1; Klak, Cornelia2; Venter, Andor M.1; Venter, Hendrik J. T.1; Bruyns, Peter V.2
通讯作者Bruyns, Peter V.
来源期刊TAXON
ISSN0040-0262
EISSN1996-8175
出版年2016
卷号65期号:3页码:487-501
英文摘要

Cryptolepis is the second-largest genus in the Periplocoideae with 30 species. It is the most widely distributed genus in the subfamily and occupies a wide range of habitats, from moist forests to stony semi-deserts. Analyses of DNA-data revealed that Cryptolepis is paraphyletic and, for monophyly to prevail, Parquetina should be included in Cryptolepis. Most of the species fall into two major clades: one confined to NE Africa and neighbouring areas; the other absent from NE Africa but widely distributed from West to South Africa. Most species of Cryptolepis from the more arid areas are shrubby, often with reduced leaves and often with much reduced, few-flowered inflorescences. We establish that Cryptolepis arose about 21 million years ago and began its major radiation around 16 million years ago. Despite this age and its wide distribution, it has not diversified significantly, perhaps limited in the more arid regions by the absence of succulence. It is also possible that the relatively uniform floral structure also limited its response to the diversity of pollinators. Although most species of Cryptolepis are African, there are three species in SE Asia. We show that these three SE Asian species are nested among African taxa and are likely to have reached SE Asia by long-distance dispersal.


英文关键词biogeography character-evolution diversity DNA-data molecular dating Old World phylogeny
类型Article
语种英语
国家South Africa
收录类别SCI-E
WOS记录号WOS:000379280900004
WOS关键词PHYLOGENETIC-RELATIONSHIPS ; CHLOROPLAST DNA ; OLD-WORLD ; MOLECULAR PHYLOGENY ; NONCODING REGIONS ; UNIVERSAL PRIMERS ; EVOLUTION ; CLASSIFICATION ; AMPLIFICATION ; EUPHORBIA
WOS类目Plant Sciences ; Evolutionary Biology
WOS研究方向Plant Sciences ; Evolutionary Biology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/196628
作者单位1.Univ Free State, Dept Plant Sci, POB 339, ZA-9300 Bloemfontein, South Africa;
2.Univ Cape Town, Dept Biol Sci, ZA-7701 Rondebosch, South Africa
推荐引用方式
GB/T 7714
Joubert, Lize,Klak, Cornelia,Venter, Andor M.,et al. A widespread radiation in the Periplocoideae (Apocynaceae): The case of Cryptolepis[J],2016,65(3):487-501.
APA Joubert, Lize,Klak, Cornelia,Venter, Andor M.,Venter, Hendrik J. T.,&Bruyns, Peter V..(2016).A widespread radiation in the Periplocoideae (Apocynaceae): The case of Cryptolepis.TAXON,65(3),487-501.
MLA Joubert, Lize,et al."A widespread radiation in the Periplocoideae (Apocynaceae): The case of Cryptolepis".TAXON 65.3(2016):487-501.
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