Phylogeny, origin, and dispersal of Dubyaea (Asteraceae) based on Hyb-Seq data

Xu, Lian-Sheng; Chen, Yousheng

doi:10.1016/j.ympev.2021.107289

Cited by 6 publications

(5 citation statements)

References 47 publications

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“…Our approach shows that quantitative evaluation of nonsequenced specimens that were identified based on morphological characters and using existing prephylogenetic treatments can be successful in evaluating the status of so‐called nested singletons that were found in phylogenetic analyses. Such singletons are frequent in published molecular phylogenetic trees based on multiple sequence alignments of few to multiple loci (Bengtson et al, 2021 ; Lu‐Irving et al, 2021 ; García‐Moro et al, 2022 ) and as well in phylogenomic analyses using RAD (Böhnert et al, 2022 ) or hyb seq data (Jones et al, 2019 ; Xu & Chen, 2021 ). Under normal circumstances, one would target several specimens of a species complex to address species delimitation, then also ideally combining molecular, morphological, ecological, and distributional data in an integrative taxonomy approach.…”

Section: Discussionmentioning

confidence: 99%

Nested singletons in molecular trees: Utility of adding morphological and geographical data from digitized herbarium specimens to test taxon concepts at species level in the case of Casearia (Salicaceae)

Mestier

Lücking

Gutiérrez

et al. 2023

Ecology and Evolution

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Section: Discussionmentioning

confidence: 99%

Nested singletons in molecular trees: Utility of adding morphological and geographical data from digitized herbarium specimens to test taxon concepts at species level in the case of Casearia (Salicaceae)

Mestier

Lücking

Gutiérrez

et al. 2023

Ecology and Evolution

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“…Since southwest China is adjacent to the Tibetan Plateau, it constitutes the southeastern edge of the Tibetan Plateau, a region with unusually complex and diverse geomorphological and climatic features (Sun et al, 2017;Xia et al, 2022). Incredibly high inter-and intra-specific diversification rates of plants have been documented in this region, hypothetically attributed to the geological uplifts of the QTP (Baldwin, 2014;Mao et al, 2021;Xu and Chen, 2021). Studies have demonstrated that climatic oscillations in the region have triggered the radiation/diversification of plants in several genera (Zhang et al, 2014a;He et al, 2020).…”

Section: Evolutionary Patterns In Persicarieaementioning

confidence: 99%

“…The periglacial region of the HDM in southwest China has the richest flora of any habitat of its kind in the world ( Hu et al., 2021 ; Xia et al., 2022 ). The study of trait evolution and ecological adaptations within the framework of time divergence has been a topic of research interest ( Mao et al., 2021 ; Xu and Chen, 2021 ). Numerous hypotheses, theories, and conclusions have been proposed ( Frye and Kron, 2003 ; Schuster et al., 2013 ).…”

Section: Introductionmentioning

confidence: 99%

Plastid phylogenomics sheds light on divergence time and ecological adaptations of the tribe Persicarieae (Polygonaceae)

Cao

Zhang

et al. 2022

Front. Plant Sci.

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Southwestern China, adjacent to the Qinghai-Tibetan Plateau (QTP), is known as a hotspot for plant diversity and endemism, and it is the origin and diversification center of Persicarieae. As one of the major lineages in Polygonaceae, Persicarieae represents a diverse adaptation to various habitats. As a result of morphological plasticity and poorly resolving molecular markers, phylogenetic relationships and infrageneric classification within Persicarieae have long been controversial. In addition, neither plastome phylogenomic studies nor divergence time estimates on a larger sample of Persicarieae species have been made thus far. We sequenced and assembled 74 complete plastomes, including all of the recognized genera within Persicarieae and their relatives. We conducted a comprehensive phylogenetic study of the major clades within Persicarieae and, based on the thus obtained robust phylogeny, also estimated divergence time and the evolution of diagnostic morphological traits. Major relationships found in previous phylogenetic studies were confirmed, including those of the backbone of the tree, which had been a major problem in previous phylogenies of the tribe. Phylogenetic analysis revealed strong support for Koenigia as sister to Bistorta, and together they were sister to the robustly supported Persicaria. Based on the phylogenetic and morphological evidence, we recognize five sections in Persicaria: Persicaria, Amphibia, Tovara, Echinocaulon, and Cephalophilon. It is estimated that the divergence of the Persicarieae began around the late Paleocene, with diversification concentrated in the Eocene and Miocene. In addition, it is suggested that the increasing westerly and monsoon winds in conjunction with the uplift of the QTP may be the driving force for origin and diversification of Persicarieae species. These results provide a valuable evolutionary framework for the study of adaptation in Polygonaceae and insights into plant diversification on the QTP and adjacent areas.

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“…Dubyaea DC. (Asteraceae: Cichorieae) is a small genus of 11 species (POWO, 2023), almost entirely endemic to the Pan-Himalayan region (Xu & Chen, 2021). The genus is characterized by nodding capitula, phyllaries in several series, having brownish, purplish, or blackish stiff and often glandular hairs along midveins (rarely glabrous), fusiform cypselae that are weakly compressed with truncate or attenuate apices, and coarse and rigid pappus setae (Stebbins, 1940;Chen et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Dubyaea atropurpurea (Asteraceae): an addition to the flora of India

S.¹,

I.A.²,

.³

2023

iaat

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Dubyaea atropurpurea Stebbins (Asteraceae: Cichorieae) is reported here for the first time from India. A brief description of the plant along with colour photographs, distribution map and a key to the Indian taxa of Dubyaea DC. is provided to facilitate easy identification, as well as to throw light on its phytogeography. Its taxonomic affinities and differences with closely related species are examined and discussed.

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Phylogeny, origin, and dispersal of Dubyaea (Asteraceae) based on Hyb-Seq data

Cited by 6 publications

References 47 publications

Nested singletons in molecular trees: Utility of adding morphological and geographical data from digitized herbarium specimens to test taxon concepts at species level in the case of Casearia (Salicaceae)

Nested singletons in molecular trees: Utility of adding morphological and geographical data from digitized herbarium specimens to test taxon concepts at species level in the case of Casearia (Salicaceae)

Plastid phylogenomics sheds light on divergence time and ecological adaptations of the tribe Persicarieae (Polygonaceae)

Dubyaea atropurpurea (Asteraceae): an addition to the flora of India

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