‘Out of Africa’ origin of the pantropical staghorn fern genus Platycerium (Polypodiaceae) supported by plastid phylogenomics and biogeographical analysis

Annals of Botany, Год журнала: 2024, Номер 133(5-6), С. 697 - 710

Опубликована: Янв. 17, 2024

Abstract Background and Aims The staghorn fern genus Platycerium is one of the most commonly grown ornamental ferns, it evolved to occupy a typical pantropical intercontinental disjunction. However, species-level relationships in have not been well resolved, spatiotemporal evolutionary history also needs be explored. Methods Plastomes all 18 species were newly sequenced. Using plastome data, we reconstructed phylogenetic among Polypodiaceae members with focus on species, further conducted molecular dating biogeographical analyses genus. Key Results present yielded robustly supported hypothesis Platycerium. Molecular results showed that split from its sister Hovenkampia ~35.2 million years ago (Ma) near Eocene–Oligocene boundary began diverge ~26.3 Ma during late Oligocene, while multiple speciation events within occurred middle Miocene. Biogeographical analysis suggested originated tropical Africa then dispersed eastward southeast Asia–Australasia westward neotropical areas. Conclusions Our using plastid phylogenomic approach improved our understanding global climate changes both Late Oligocene Warming cooling following mid-Miocene Climate Optimum may promoted Platycerium, transoceanic long-distance dispersal plausible explanation for distribution today. study investigating provides case only formation disjunction this but ‘out Africa’ origin plant lineages.

Язык: Английский

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Target sequence capture data shed light on the deeper evolutionary relationships of subgenus Chamaecerasus in Lonicera (Caprifoliaceae)

Molecular Phylogenetics and Evolution, Год журнала: 2023, Номер 184, С. 107808 - 107808

Опубликована: Май 6, 2023

Язык: Английский

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Cloning and bioinformatics analysis of key gene ShOMT3 of podophyllotoxin biosynthesis pathway in Sinopodophyllum hexandrum

PLoS ONE, Год журнала: 2025, Номер 20(2), С. e0314919 - e0314919

Опубликована: Фев. 14, 2025

Sinopodophyllum hexandrum ( S. ) is an endangered traditional Chinese medicine as abundant podophyllotoxin with powerful anticancer activity. In this study, the rootstalks of from different geographical locations in China [S1 (Gansu) and S2 (Shaanxi)] were used research materials to clone key gene pluviatolide O-methyltransferase 3 ShOMT3 biosynthetic pathway. Subsequently, bioinformatics analysis its encoded protein was subjected using various software including ProtParam, DeepTMHMM, SubLoc, Signal-P 5.0, Swiss-model. The results revealed that CDS region 1119 bp long, encoding 372 amino acids. theoretical molecular weight 41.32784 kD, isoelectric point (pI) 5.27. instability coefficient 46.05, aliphatic index 93.58, grand average hydropathicity (GRAVY) 0.037, indicating it unstable hydrophobic protein. does not contain transmembrane domains or signal peptides, a non-secreted Secondary structure prediction suggests consists alpha helices, random coils, extended strands, beta-turns. Tertiary functions monomer. phylogenetic tree, has highest homology Podophyllum peltatum P. ). successful cloning provide basis excellent genetic resources for regulatory mechanism pathway breeding .

Язык: Английский

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A phylogenomic investigation into the biogeography of the Mexico–eastern U.S. disjunction in Symphyotrichum

American Journal of Botany, Год журнала: 2025, Номер unknown

Опубликована: Март 17, 2025

Abstract Premise Biotic disjunctions have attracted scientific attention for the past 200 years. Despite being represented in many familiar plants (such as bald cypress, flowering dogwood, sweetgum, partridgeberry, etc.), eastern North American (ENA)–Mexican (M) disjunction remains poorly understood. Major outstanding questions include divergence times of taxa exhibiting and environmental/geological processes that may underlie disjunction. Symphyotrichum Nees (Asteraceae), one most diverse genera USA, displays several examples disjunct ENA–M taxa. Methods We generated target capture data using Angiosperms353 baitset first well‐sampled phylogenomic hypothesis its close relatives. Focusing on S . subgenus Virgulus , we used MCMC TREE to perform time estimation R package BioGeoBEARS infer ancestral regions biogeographic transitions between America Mexico. Finally, niche reconstruction method Utremi test a role historical aridification generating Results Our molecular suggest recent radiation at Plio‐Pleistocene boundary (~2.5 mya), with early connections Mexico lineages closed off shortly after were followed by vicariance across this region. Except some present‐day broadly distributed species, there is complete lack movement ENA M ~0.5 mya. Conclusions A reconstructed distribution suitable habitat Pleistocene climatic models corroborates results from modeling confirms glacial cycles are more likely be associated breakup connections.

Язык: Английский

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Phylogenomics and historical biogeography of Hydrangeeae (Hydrangeaceae) elucidate the effects of geologic and climatic dynamics on diversification

Proceedings of the Royal Society B Biological Sciences, Год журнала: 2023, Номер 290(2003)

Опубликована: Июль 26, 2023

Demonstrating the process of transregional biogeography and mechanisms underlying evolutionary radiations is crucial to understanding biological evolution. Here, we use Hydrangeeae (Hydrangeaceae), a tribe with unique disjunct distribution complex trait variations, using solid phylogenetic framework, investigate how geographical climatic factors interact functional traits trigger plant radiations. We constructed first highly supported dated framework 79 protein-coding genes obtained from 81 plastomes, representing 63 species all major clades, found that most extant originated asynchronous diversification two lineages undergoing repeated expansion retraction, at middle high latitudes Northern Hemisphere between East Asia North America, during Eocene Pleistocene (driven by geologic dynamics). In accordance these drivers, interactions flora central-eastern China Japan occurred frequently after Late Tertiary. resource limitation range fragmentation probably accelerated Hydrangeeae, which supports resource-use hypothesis. Our study sheds light on radiation assembly within Asia, Asian-North American disjunction, through integration phylogenomic biogeographic data ecological data.

Язык: Английский

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Phylogenomic insights into species relationships, reticulate evolution, and biogeographic diversification of the ginseng genus Panax (Araliaceae), with an emphasis on the diversification in the Himalayan‐Hengduan Mountains

Journal of Systematics and Evolution, Год журнала: 2024, Номер 63(1), С. 99 - 114

Опубликована: Ноя. 11, 2024

Abstract Panax (Araliaceae) is a small genus containing several well known medicinally important species. It has disjunct distribution between Eastern Asia and North America, with most species from eastern Asia, especially the Himalayan‐Hengduan Mountains (HHM). This study used genomic target enrichment method to obtain 358 nuclear ortholog loci complete plastome sequences 59 accessions representing all 18 of genus. Divergence time estimation biogeographic analyses suggest that was probably widely distributed America during middle Eocene. During late Eocene Oligocene may have experienced extensive extinctions global climate cooling. survived diverged early in mountains Southwest China tropical Indochina, where some taxa migrated northwestward HHM, eastward central China, then onward toward Japan America. Gene flow identified as main contributor phylogenetic discordance (33.46%) within . We hypothesize common ancestors P. ginseng + japonicus quinquefolius clade had allopolyploidization, which increased adaptability cooler drier environments. Miocene, dispersals occurred region HHM contiguous areas, suggesting acted refugium also served secondary diversification center for Our findings highlight interplay orographic uplift climatic changes greatly contributed diversity

Язык: Английский

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Ecophysiology of seed dormancy and germination in the alpine-subalpine medicinal plant species Sinopodophyllum hexandrum (Royle) T. S. Ying

Journal of Applied Research on Medicinal and Aromatic Plants, Год журнала: 2022, Номер 32, С. 100448 - 100448

Опубликована: Дек. 2, 2022

Язык: Английский

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New insights into infrageneric relationships of Lonicera (Caprifoliaceae) as revealed by nuclear ribosomal DNA cistron data and plastid phylogenomics

Journal of Systematics and Evolution, Год журнала: 2023, Номер 62(3), С. 333 - 357

Опубликована: Окт. 10, 2023

Abstract The discontinuous geographic distribution pattern of plants in the north temperate zone has been a focus biogeographic research, especially concerning mechanisms behind formation such and spatial temporal evolution this intermittent pattern. Hypotheses boreotropical origin, land bridge migration, out‐of‐Tibet have proposed to explain Lonicera shows typical Europe–Asia–North America distribution, which makes for good case study investigate above three hypotheses. In study, we inferred phylogeny based on plastid genomes nuclear data set with broad taxon sampling, covering 83 species representing two subgenera four sections. Both phylogenetic analyses found section Isika polyphyletic, while sections Nintooa , Isoxylosteum Coelxylosteum were monophyletic subgenus Chamaecerasus . Based chloroplast phylogeny, suggest transferring maximowiczii tangutica into Reconstruction ancestral areas suggests that originated Qinghai–Tibetan Plateau (QTP) and/or Asia, subsequently dispersed other regions. aridification Asian interior may facilitated rapid radiation region. At same time, uplifts Tibetan appear triggered spread recent diversification genus QTP adjacent areas. Overall, our results deepen understanding evolutionary history

Язык: Английский

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Insights into phylogenetic analyses of Amaryllidaceae based on complete chloroplast genome of the endemic Chinese genus Shoubiaonia sp.

Scientia Horticulturae, Год журнала: 2024, Номер 337, С. 113515 - 113515

Опубликована: Июль 26, 2024

Язык: Английский

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Molecular phylogeography and historical demography of a widespread herbaceous species from eastern North America, Podophyllum peltatum

American Journal of Botany, Год журнала: 2023, Номер 110(11)

Опубликована: Ноя. 1, 2023

Abstract Premise Glacial/interglacial cycles and topographic complexity are both considered to have shaped today's diverse phylogeographic patterns of taxa from unglaciated eastern North America (ENA). However, few studies focused on the phylogeography population dynamics wide‐ranging ENA herbaceous species occurring in forest understory habitat. We examined pattern evolutionary history Podophyllum peltatum L., a widely distributed herb inhabiting deciduous forests ENA. Methods Using chloroplast DNA (cpDNA) sequences nuclear microsatellite loci, we investigated structure genetic diversity species. Molecular dating, demographic analyses, ecological niche modeling were also performed illustrate patterns. Results Our cpDNA results identified three main groups that largely congruent with boundaries along Appalachian Mountains Mississippi River, two major geographic barriers Populations located east Appalachians central exhibited relatively higher levels diversity. Extant lineages may diverged during late Miocene, range expansions different happened Pleistocene glacial/interglacial cycles. Conclusions findings indicate started facilitate divergence P. before Pleistocene. Persistence multiple refugia, including areas around Quaternary glacial period, subsequent under hospitable climatic condition, especially westward expansion, likely responsible for species’ contemporary pattern.

Язык: Английский

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