干旱区生态环境知识资源中心(Arid): Phylogenetic relationships in the southern African genus Drosanthemum (Ruschioideae, Aizoaceae)

Arid

DOI	10.7717/peerj.8999
	Phylogenetic relationships in the southern African genus Drosanthemum (Ruschioideae, Aizoaceae)
	Liede-Schumann, Sigrid; Grimm, Guido W.; Nuerk, Nicolai M.; Potts, Alastair J.; Meve, Ulrich; Hartmann, Heidrun E. K.
通讯作者	Liede-Schumann, S
来源期刊	PEERJ
ISSN	2167-8359
出版年	2020
卷号	8
英文摘要	Background. Drosanthemum, the only genus of the tribe Drosanthemeae, is widespread over the Greater Cape Floristic Region in southern Africa. With 114 recognized species, Drosanthemum, together with the highly succulent and species-rich tribe Ruschieae, constitute the 'core ruschioids' in Aizoaceae. Within Drosanthemum, nine subgenera have been described based on flower and fruit morphology. Their phylogenetic relationships, however, have not yet been investigated, hampering understanding of monophyletic entities and patterns of geographic distribution. Methods. Using chloroplast and nuclear DNA sequence data, we performed networkand tree-based phylogenetic analyses of 73 species of Drosanthemum with multiple accessions for widespread species. A well-curated, geo-referenced occurrence dataset comprising the 134 genetically analysed and 863 further accessions was used to describe the distributional ranges of intrageneric lineages and the genus as a whole. Results. Phylogenetic inference supports nine clades within Drosanthemum, seven of which group in two major Glades, while the remaining two show ambiguous affinities. The nine Glades are generally congruent to previously described subgenera within Drosanthemum, with exceptions such as cryptic species. In-depth analyses of sequence patterns in each gene region were used to reveal phylogenetic affinities inside the retrieved Glades in more detail. We observe a complex distribution pattern including widespread, species-rich clades expanding into arid habitats of the interior (subgenera Drosanthemum p.p., Vespertina, Xamera) that are genetically and morphologically diverse. In contrast, less species-rich, genetically less divergent, and morphologically unique lineages are restricted to the central Cape region and more mesic conditions (Decidua, Necopina, Ossicula, Quastea, Quadrata, Speciosa). Our results suggest that the main lineages arose from an initial rapid radiation, with subsequent diversification in some clades.
英文关键词	Distribution Genetic diversity Greater Cape Floristic Region Haplotyping Maximum Likelihood MJ Network Outgroup placement Phylogeny SP Network Subgeneric Classification
类型	Article
语种	英语
开放获取类型	Green Submitted, gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000531182100001
WOS关键词	MESEMBRYANTHEMACEAE ; RUSCHIEAE ; EVOLUTION ; NETWORKS ; PLANTS ; CLASSIFICATION ; ANGIOSPERMS ; HYPOTHESIS ; AIZOOIDEAE ; SEQUENCES
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324422
作者单位	[Liede-Schumann, Sigrid; Nuerk, Nicolai M.; Meve, Ulrich] Univ Bayreuth, Dept Plant Systemat, Bayreuth, Germany; [Potts, Alastair J.] Nelson Mandela Univ, African Ctr Coastal Palaeosci, Port Elizabeth, Eastern Cape, South Africa; [Hartmann, Heidrun E. K.] Univ Hamburg, Dept Systemat & Evolut Plants, Hamburg, Germany
推荐引用方式 GB/T 7714	Liede-Schumann, Sigrid,Grimm, Guido W.,Nuerk, Nicolai M.,et al. Phylogenetic relationships in the southern African genus Drosanthemum (Ruschioideae, Aizoaceae)[J],2020,8.
APA	Liede-Schumann, Sigrid,Grimm, Guido W.,Nuerk, Nicolai M.,Potts, Alastair J.,Meve, Ulrich,&Hartmann, Heidrun E. K..(2020).Phylogenetic relationships in the southern African genus Drosanthemum (Ruschioideae, Aizoaceae).PEERJ,8.
MLA	Liede-Schumann, Sigrid,et al."Phylogenetic relationships in the southern African genus Drosanthemum (Ruschioideae, Aizoaceae)".PEERJ 8(2020).