Peeling back the layers: First phylogenomic insights into the Ledebouriinae (Scilloideae, Asparagaceae).

Autor: Howard CC; Florida Museum of Natural History, University of Florida, Gainesville, FL 32611, USA; Department of Biology, University of Florida, Gainesville, FL 32611, USA. Electronic address: cchoward@ufl.edu., Crowl AA; Duke University, Durham, NC 27708, USA., Harvey TS; Plantae Novae, Thousand Oaks, CA 91360, USA., Cellinese N; Florida Museum of Natural History, University of Florida, Gainesville, FL 32611, USA; Biodiversity Institute, University of Florida, Gainesville, FL 32611, USA.
Jazyk: angličtina
Zdroj: Molecular phylogenetics and evolution [Mol Phylogenet Evol] 2022 Apr; Vol. 169, pp. 107430. Date of Electronic Publication: 2022 Feb 05.
DOI: 10.1016/j.ympev.2022.107430
Abstrakt: The Ledebouriinae (Scilloideae, Asparagaceae) are a widespread group of bulbous geophytes found predominantly throughout seasonal climates in sub-Saharan Africa, with a handful of taxa in Madagascar, the Middle East, India, and Sri Lanka. Phylogenetic relationships within the group have been historically difficult to elucidate. Here, we provide the first phylogenomic perspective into the Ledebouriinae. Using the Angiosperms353 targeted enrichment probe set, we consistently recovered four major clades (i.e., two Ledebouria clades, Drimiopsis, and Resnova). The two Ledebouria clades closely align with geography, either consisting almost entirely of sub-Saharan African taxa (Ledebouria Clade A), or East African and non-African taxa (Ledebouria Clade B). Our results suggest that the Ledebouriinae likely underwent a rapid radiation leading to rampant incomplete lineage sorting. We additionally find evidence for potential historical hybridization between Drimiopsis and a subclade within Ledebouria Clade A.
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Databáze: MEDLINE
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