Species delimitation 4.0: integrative taxonomy meets artificial intelligence

Karbstein, Kevin; Kösters, Lara; Hodač, Ladislav; Hofmann, Martin; Hörandl, Elvira; Tomasello, Salvatore; Wagner, Natascha D.; Emerson, Brent C.; Albach, Dirk C.; Scheu, Stefan; Bradler, Sven; de Vries, Jan; Irisarri, Iker; Li, He; Soltis, Pamela; Mäder, Patrick; Wäldchen, Jana

doi:10.1016/j.tree.2023.11.002

Trends in Ecology & Evolution

2024

DOI: 10.1016/j.tree.2023.11.002

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Species delimitation 4.0: integrative taxonomy meets artificial intelligence

Kevin Karbstein,

Lara Kösters,

Ladislav Hodač

et al.

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Cited by 14 publications

References 104 publications

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Oreocharis scutifolia (Gesneriaceae), a Peltate‐Leaved New Species From the Dry–Hot Valley of the Jinsha River Basin, Yunnan, China

Xie,

Peng,

Zhang

et al. 2024

Ecology and Evolution

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A peltate‐leaved new species, Oreocharis scutifolia Z. Xie & H. H. Kong, endemic to the Dry–Hot Valley of the Jinsha River Basin, Yunnan, China, is described and illustrated here. It is similar to O. cordatula (Craib) Pellegr. and O. aurantiaca Baill. in floral characters but differs in its peltate leaf blades, which are unique in the genus (and only occur in one population of O. henryana Oliv., but its flowers are smaller, campanulate, and deep purple). Molecular phylogenetic analysis based on transcriptome data confirmed its systematic position to be sister group with O. henryana, O. cordatula, O. minor Pellegr., and O. aurantiaca Baill. (LPP = 1), and well apart from the remaining members of the genus. The new species O. scutifolia is assessed as “Critically Endangered” following the IUCN categories and criteria, due to its small and single population, thus making it face serious threats from human disturbance, invasive plants, shrinking habitat, and decreasing habitat quality.

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Oreocharis scutifolia (Gesneriaceae), a Peltate‐Leaved New Species From the Dry–Hot Valley of the Jinsha River Basin, Yunnan, China

Xie,

Peng,

Zhang

et al. 2024

Ecology and Evolution

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Species delimitation in Xanthium sect. Acanthoxanthium (Heliantheae, Asteraceae) and the neglected species Xanthium argenteum

Manzo,

Nillies,

Gutiérrez

et al. 2024

TAXON

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Xanthium is a genus of annual herbaceous plants that stands out within Asteraceae for being wind‐pollinated, diclinous monoecious, and bearing solitary pistillate flowers in peculiar spiny structures (burs). Xanthium sect. Acanthoxanthium is native to South America and characterized by the presence of trifurcate spines at the base of the leaves. Past taxonomic treatments of the section have been contradictory, some recognising up to six species, others reducing all to a single polymorphic species. Altogether, 42 samples of X. sect. Acanthoxanthium were analysed, the vast majority taken from herbarium specimens between 20 and 160 years old. We sampled multiple specimens of X. spinosum from throughout its broad range as well as those taxa with narrower distributions, covering the whole range of morphological variation in the section. When possible, we included types and original material. We used Hyb‐Seq techniques to obtain information from about 1000 single‐copy nuclear genes and complete plastomes. Phylogenomic data were submitted to coalescent‐based species delimitation approaches (SPEEDEMON). Additionally, we performed geometric morphometric analysis of leaf outlines. The results strongly support the identification of four lineages in the section favouring the acceptance of four of the hitherto described species, i.e., X. ambrosioides, X. argenteum, X. catharticum, and X. spinosum. These results were to some extent corroborated by morphometric analyses. While X. ambrosioides was well distinct from X. spinosum based on leaf morphology, such difference was not observed between X. spinosum and X. catharticum. However, X. catharticum differs from X. spinosum in its ecological requirements, being a species rather adapted to high‐mountain environments of the Neotropics. Intriguingly, X. argenteum – a taxon described from a single herbarium collection – was also inferred as a species.

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Genome-wide species delimitation and quantification of the extent of introgression in eriophyoid mite Epitrimerus sabinae complex (Acariformes: Eriophyoidea)

Yao,

Shao,

et al. 2024

Molecular Phylogenetics and Evolution

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Species delimitation 4.0: integrative taxonomy meets artificial intelligence

Cited by 14 publications

References 104 publications

Oreocharis scutifolia (Gesneriaceae), a Peltate‐Leaved New Species From the Dry–Hot Valley of the Jinsha River Basin, Yunnan, China

Oreocharis scutifolia (Gesneriaceae), a Peltate‐Leaved New Species From the Dry–Hot Valley of the Jinsha River Basin, Yunnan, China

Species delimitation in Xanthium sect. Acanthoxanthium (Heliantheae, Asteraceae) and the neglected species Xanthium argenteum

Genome-wide species delimitation and quantification of the extent of introgression in eriophyoid mite Epitrimerus sabinae complex (Acariformes: Eriophyoidea)

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