Phylogeny based generic reclassification of Muscari sensu lato (Asparagaceae) using plastid and genomic DNA

被引:14
|
作者
Boehnert, Tim [1 ]
Neumann, Michael [2 ]
Quandt, Dietmar [1 ,3 ]
Weigend, Maximilian [1 ]
机构
[1] Univ Bonn, Nees Inst Biodivers Plants, Meckenheimer Allee 170, D-53115 Bonn, Germany
[2] Univ Bonn, Bot Gardens, Meckenheimer Allee 171, D-53115 Bonn, Germany
[3] Leibniz Inst Plant Genet & Crop Plant Res IPK, Gatersleben, Germany
关键词
ddRAD; geophyte; Leopoldia; Mediterranean; Pseudomuscari; Scilloideae; INFERENCE; HYACINTHACEAE; SCILLOIDEAE; LEOPOLDIA; RESOLVES; REGION; RADSEQ; POWER;
D O I
10.1002/tax.12864
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The grape hyacinth (Muscari) represents an important ornamental plant group in Asparagaceae subfamily Scilloideae, comprising some 80 species distributed mainly in the Mediterranean. However, genus delimitation has repeatedly shifted over the past two centuries and a general consensus has not been reached so far. The present study investigates the phylogeny of Muscari s.l. (i.e., including the disputed segregates Pseudomuscari and Leopoldia) with a broad sampling of about half the currently recognized species using both chloroplast markers (trnK(matK)-psbA, trnL-trnF, rpl16) and genome-wide single nucleotide polymorphism (SNP) data generated by double-digest restriction site-associated DNA sequencing (ddRAD). We perform concatenated maximum likelihood inference for both datasets as well as a coalescent-based approach and principal component analysis (PCA) on the ddRAD data. We find that the morphological characters traditionally used to distinguish different genera are not diagnostic for the clades here retrieved. Also, the segregates Pseudomuscari and Leopoldia are deeply nested in Muscari and we therefore propose a broadly defined Muscari with five subgenera. The subgenera roughly correspond to previously recognized entities, with the exception of the newly identified clade here proposed as M. subg. Pulchella subg. nov. We provide a provisional assignment of the 80 currently accepted taxa to these subgenera.
引用
收藏
页码:261 / 277
页数:17
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