Phylogenomics of Aralia sect. Aralia (Araliaceae): Signals of hybridization and insights into its species delimitations and intercontinental biogeography

Molecular Phylogenetics and Evolution, Journal Year: 2023, Volume and Issue: 181, P. 107727 - 107727

Published: Feb. 7, 2023

Language: Английский

---

RAD‐seq data provide new insights into biogeography, diversity anomaly, and species delimitation in eastern Asian–North American disjunct clade Benthamidia of Cornus (Cornaceae)

Journal of Systematics and Evolution, Journal Year: 2023, Volume and Issue: 62(1), P. 1 - 19

Published: Dec. 13, 2023

Abstract The big‐bracted dogwood clade Benthamidia of Cornus is a typical example the well‐known eastern Asia (EA) and North America (NA) floristic disjunction, with greater species diversity in EA than NA. lineage provides an opportunity to explore factors contributing plant unevenness between NA test hypotheses on origin disjunct distribution from phylogenetic perspective. We generated RAD‐seq data, conducted phylogenomic biogeographic analyses for sampling all (9) subspecies (10) currently recognized floras. also assessed delineation calculated evaluate Finally, we examined variation diversification rates ecological niches phylogeny potential causes underlying observed pattern. Our results revealed relationships congruent previous studies suggested trans‐Beringian ancestral mid‐Oligocene, dispersal Mexico United States mid‐Miocene, early SW China. confirmed rate clade. Species delimitation analysis 17 , including subspecies. By integrating molecular data morphology, proposed retain without changing their ranks. increased as intrinsic factor explaining region driven mainly by isolation partially niche divergence.

Language: Английский

---

Molecular phylogeny of the operculated land snail family Pupinidae (Caenogastropoda, Cyclophoroidea) in mainland Southeast Asia

Zoologica Scripta, Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

Abstract The operculated land snail family Pupinidae from mainland Southeast Asia has been systematically revised based on shell morphology. Despite previous morphological studies, the evolutionary relationships within this remained unclear. This study represents first comprehensive molecular phylogeny of group, utilising two mitochondrial (COI and 16S rRNA) nuclear (5.8S rRNA + ITS2 28S genetic markers. Additionally, we conducted phylogenetic analyses Pupina species 1106 loci generated through double‐digest restriction site‐associated DNA sequencing (ddRADseq). It turned out that Asian Pollicaria emerged as a sister clade to Central American Aperostoma Megalomastomatidae, leading resurrection Pollicariidae. Among remaining pupinid genera, Tortulosa was nested Coptocheilus clade, while Pupinella were not monophyletic. previously recognised arula group found be monophyletic reclassified into Tylotoechus (formerly subgenus), distinctive conchological characters such an extending parietal tooth callus wide, outward‐curving posterior canal. However, some retrieved monophyletic, suggesting presence multiple ‘cryptic species’. Divergence time estimation indicated split could date back Late Triassic Early Cretaceous, with diversification genera occurring during Middle Jurassic Cretaceous. successful reconstruction robust using ddRADseq demonstrates significant potential RADseq techniques in elucidating deeply divergent taxa. Further studies incorporating type destructus keraudrenii are necessary justify usage these genera.

Language: Английский

---

The Divergence History of Two Japanese Torreya Taxa (Taxaceae): Implications for Species Diversification in the Japanese Archipelago

Plants, Journal Year: 2025, Volume and Issue: 14(10), P. 1537 - 1537

Published: May 20, 2025

The Japanese archipelago as a continental island of the Eurasia continent and harboring high levels plant species diversity provides an ideal geographical setting for investigating vicariant allopatric speciation due to sea-level fluctuations associated with climatic oscillations during Quaternary. In this study, three chloroplast DNA regions 14 nuclear loci were sequenced 31 individuals from populations Torreya nucifera var. 52 T. radicans. Population genetic analyses (Network, STRUCTURE phylogeny) revealed that boundaries two varieties are distinct, differentiation (FST) 0.9619 in 0.6543 loci. relatively ancient divergence times between estimated 3.03 Ma by DIYABC 1.77 IMa2 when dated back late Pliocene early Pleistocene, respectively. extremely weak gene flow (2Nm = 0.1) was detected IMa2, which might be caused their population expansion since Pleistocene (~2.0 Ma) inferred Bayesian skyline plots DIYABC. Niche modeling showed had significant ecological (p < 0.001) Last Interglacial even earlier. These results demonstrate may common mode archipelago. This finding insights into understanding diversification Archipelago East Asian flora under

Language: Английский

---

Complete chloroplast genomes of four Atalantia (Rutaceae) species: insights into comparative analysis, phylogenetic relationships, and divergence time estimation

Plant Systematics and Evolution, Journal Year: 2023, Volume and Issue: 309(5)

Published: Aug. 16, 2023

Language: Английский

---

Phylogenomics AND biogeography of Castanea (chestnut) and Hamamelis (witch-hazel) – Choosing between RAD-seq and Hyb-Seq approaches

Molecular Phylogenetics and Evolution, Journal Year: 2022, Volume and Issue: 176, P. 107592 - 107592

Published: Aug. 1, 2022

Language: Английский

---

Peripatric speciation within Torreya fargesii (Taxaceae) in the Hengduan Mountains inferred from multi-loci phylogeography

BMC Ecology and Evolution, Journal Year: 2023, Volume and Issue: 23(1)

Published: Dec. 12, 2023

Abstract Background The Hengduan Mountains (HDM) are one of the major global biodiversity hotspots in world. Several evolutionary scenarios, especially in-situ diversification, have been proposed to account for high species richness temperate plants. However, peripatric speciation, an important mode allopatric has seldom reported this region. Results Here, two chloroplast DNA regions and 14 nuclear loci were sequenced 112 individuals from 10 populations Torreya fargesii var. 63 6 T. yunnanensis . Population genetic analyses revealed that varieties well differentiated genetically ( F ST , 0.5765) uneven diversity π 0.00221 vs. 0.00073 on average loci). gene genealogical relationship showed is inferred as derived which was further supported by coalescent simulations (DIYABC, fastsimcoal2 IMa2). By simulations, divergence time (~ 2.50–3.65 Ma) weak flow between detected. asymmetrical only occurred later stages divergence, caused second contact due population expansion 0.61 In addition, niche modeling indicated geographically ecologically unbalanced distribution range. Conclusions Overall, always parapatric with respect latter former peripatry HDM following a colonization central China during late Pliocene. Our findings demonstrate speciation dispersal events may be scenario formation hotspot HDM.

Language: Английский

---

Phylogenetic Relationships and Next-Generation Barcodes in the Genus Torreya Reveal a High Proportion of Misidentified Cultivated Plants

International Journal of Molecular Sciences, Journal Year: 2023, Volume and Issue: 24(17), P. 13216 - 13216

Published: Aug. 25, 2023

Accurate species identification is key to conservation and phylogenetic inference. Living plant collections from botanical gardens/arboretum are important resources for the purpose of scientific research, but proportion cultivated misidentification un-tested using DNA barcodes. Here, we assembled next-generation barcode (complete plastid genome complete nrDNA cistron) mitochondrial genes skimming data Torreya with multiple accessions each test discrimination plants used in studies. A total 38 were included analyses, representing all nine recognized genus Torreya. The phylogeny showed that 21 wild samples formed species-specific clades, except T. jiulongshanensis. Disregarding this putative hybrid, seven sampled here successfully discriminated by genome. Only nucifera grouped into two grades. rate cistron was 62.5%. Skmer analysis based on nuclear reads skims promise discriminated. misidentified arboreta/botanical gardens relatively high four (23.5%) three species. Interspecific relationships within fully resolved maximum support plastomes, where jackii earliest diverging branch, though sister grandis tree, suggesting likely a hybrid between an extinct ancestor lineage. findings provide quantitative insights usage study.

Language: Английский

---

Abietane-Type Diterpenoids from the Arils of Torreya grandis

Molecules, Journal Year: 2024, Volume and Issue: 29(9), P. 1905 - 1905

Published: April 23, 2024

A chemical investigation of the arils Torreya grandis led to isolation seven abietane-type diterpenoids (compounds 1–7) including three previously undescribed compounds, one unreported natural product, and known analogs. The structures these compounds were determined by means spectroscopy, single-crystal X-ray diffraction, ECD spectra. An antibacterial activity assay showed that 5 6 had significant inhibitory effects on methicillin-resistant Staphylococcus aureus, with MIC values 100 μM. Moreover, 1, 3, 4, 7 exhibited anti-neuroinflammatory in LPS-stimulated BV-2 microglia cells, IC50 ranging from 38.4 67.9

Language: Английский

---

A new species Torreya with the seed-bearing structure from the Lower Cretaceous of northwestern China and its evolutionary significance

Cretaceous Research, Journal Year: 2024, Volume and Issue: unknown, P. 106056 - 106056

Published: Nov. 1, 2024

Language: Английский

---