干旱区生态环境知识资源中心(Arid): Museomics Clarifies the Classification of Aloidendron (Asphodelaceae), the Iconic African Tree Aloes

Arid

DOI	10.3389/fpls.2019.01227
	Museomics Clarifies the Classification of Aloidendron (Asphodelaceae), the Iconic African Tree Aloes
	Malakasi, Panagiota; Bellot, Sidonie; Dee, Richard; Grace, Olwen M.
通讯作者	Grace, Olwen M.
来源期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
出版年	2019
卷号	10
英文摘要	Arborescent succulent plants are regarded as keystone and indicator species in desert ecosystems due to their large stature and long lifespans. Tree aloes, the genus Aloidendron, are icons of the southern African deserts yet have proved elusive subjects due to the difficulty of obtaining material of known provenance for comparative study. Consequently, evolutionary relationships among representatives of the unusual arborescent life form have remained unclear until now. We used a museomics approach to overcome this challenge. Chloroplast genomes of six Aloidendron species and 12 other members of Asphodelaceae were sequenced from modern living collections and herbarium specimens, including the type specimens of all but two Aloidendron species, the earliest of which was collected 130 years ago. Maximum-likelihood trees estimated from full chloroplast genomes and the nuclear internal transcribed spacer (ITS) region show that Aloidendron sabaeum, from the Arabian Peninsula, is nested within Aloe while the Madagascar endemic Aloestrela suzannae is most closely related to the Somalian Aloidendron eminens. We observed phylogenetic conflicts between the plastid and nuclear topologies, which may be indicative of recurrent hybridisation or incomplete lineage sorting events in Aloe and in Aloidendron. Comparing species ecology in the context provided by our phylogeny suggests that habitat preference to either xeric deserts or humid forests/thickets evolved repeatedly in Aloidendron. Our findings demonstrate the value of botanical collections for the study and classification of taxonomically challenging succulent plants.
英文关键词	aloe botanic garden evolution herbarium phylogenomic analysis systematics
类型	Article
语种	英语
国家	England
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000497668800001
WOS关键词	GENERIC CLASSIFICATION ; PHYLOGENETIC ANALYSIS ; ALOOIDEAE ; ALIGNMENT ; QUALITY ; GENUS ; TOOL
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
EI主题词	2019-10-15
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310287
作者单位	Royal Bot Gardens, Comparat Plant & Fungal Biol, Richmond, Surrey, England
推荐引用方式 GB/T 7714	Malakasi, Panagiota,Bellot, Sidonie,Dee, Richard,et al. Museomics Clarifies the Classification of Aloidendron (Asphodelaceae), the Iconic African Tree Aloes[J],2019,10.
APA	Malakasi, Panagiota,Bellot, Sidonie,Dee, Richard,&Grace, Olwen M..(2019).Museomics Clarifies the Classification of Aloidendron (Asphodelaceae), the Iconic African Tree Aloes.FRONTIERS IN PLANT SCIENCE,10.
MLA	Malakasi, Panagiota,et al."Museomics Clarifies the Classification of Aloidendron (Asphodelaceae), the Iconic African Tree Aloes".FRONTIERS IN PLANT SCIENCE 10(2019).