干旱区生态环境知识资源中心(Arid): A new sectional classification of Lachenalia (Asparagaceae) based on a multilocus DNA phylogeny

Arid

DOI	10.1002/tax.12683
	A new sectional classification of Lachenalia (Asparagaceae) based on a multilocus DNA phylogeny
	Duncan, Graham D.; Schlichting, Carl D.; Forest, Felix; Ellis, Allan G.; Lemmon, Alan R.; Lemmon, Emily Moriarty; Verboom, G. Anthony
通讯作者	Duncan, GD
来源期刊	TAXON
ISSN	0040-0262
EISSN	1996-8175
出版年	2022
英文摘要	Lachenalia (Asparagaceae; Scilloideae; Hyacintheae) is a large and morphologically diverse genus of more than 140 bulbous species endemic to southern Africa. Previous attempts to infer a well-resolved and robustly supported phylogeny of Lachenalia using Sanger sequencing of candidate loci and/or morphological characters have been largely unsuccessful. Consequently, the current infrageneric classification is artificial, and there is a need to explore alternative avenues to produce a phylogenetic classification. In this paper, we present a novel phylogenetic hypothesis for Lachenalia inferred using maximum likelihood and coalescent-based species tree estimation (ASTRAL) as applied to 378 hybrid-enrichment loci. Our tree is well resolved and well supported, providing strong support for a monophyletic radiation of the genus in southern Africa and a solid foundation for a revised infrageneric classification. The well-supported placement of L. isopetala Jacq. as sister to Lachenalia + Massonia supports the establishment of a new monotypic genus, Pseudolachenalia, to accommodate this species. Conversely, the inclusion of species previously classified as Polyxena within the Lachenalia clade supports the transfer of these species to Lachenalia. Within Lachenalia, the delimitation of subgenera and sections is complicated by the highly imbalanced character of the phylogeny and by the high levels of homoplasy shown by most morphological characters traditionally used to delimit species in this group. Nonetheless, we propose an infrageneric taxonomy comprising 10 morphologically distinct, monophyletic sections. The largest of these, L. sect. Lachenalia, is further divided into 13 more-or-less diagnosable, monophyletic subsections. Keys to the sections of Lachenalia, and to the subsections of L. sect. Lachenalia, are provided.
英文关键词	high-throughput sequencing Lachenalia molecular systematics southern Africa
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000761239100001
WOS关键词	ANCHORED HYBRID ENRICHMENT ; ARID AREAS ; WESTERN-CAPE ; PLASTID DNA ; HYACINTHACEAE ; MASSONIEAE ; SCILLOIDEAE ; TAXA ; THOUSANDS ; SOUTHERN
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/2XILL650/377217
推荐引用方式 GB/T 7714	Duncan, Graham D.,Schlichting, Carl D.,Forest, Felix,et al. A new sectional classification of Lachenalia (Asparagaceae) based on a multilocus DNA phylogeny[J],2022.
APA	Duncan, Graham D..,Schlichting, Carl D..,Forest, Felix.,Ellis, Allan G..,Lemmon, Alan R..,...&Verboom, G. Anthony.(2022).A new sectional classification of Lachenalia (Asparagaceae) based on a multilocus DNA phylogeny.TAXON.
MLA	Duncan, Graham D.,et al."A new sectional classification of Lachenalia (Asparagaceae) based on a multilocus DNA phylogeny".TAXON (2022).