Insights into the historical assembly of East Asian subtropical evergreen broadleaved forests revealed by the temporal history of the tea family

New Phytologist, Journal Year: 2017, Volume and Issue: 215(3), P. 1235 - 1248

Published: July 11, 2017

Subtropical evergreen broadleaved forests (EBLFs) inhabit large areas of East Asia. Although paleovegetation reconstructions have revealed that the subtropical EBLFs existed in Southwest China during Miocene, historical construction these remains poorly known. Here, we used tea family (Theaceae), a characteristic component EBLFs, to gain new insights into assembly this important biome. Using robust phylogenetic framework Theaceae based on plastome and nuclear ribosomal DNA sequence data, temporal history was reconstructed. Data from other components including Fagaceae, Lauraceae Magnoliaceae, were also integrated. Most essential elements appear originated around Oligocene-Miocene (O-M) boundary. However, small woody lineages (e.g. Camellia, Hartia) dated late Miocene. Accelerated net diversification rates within detected near O-M transition period Our results suggest two independent intensifications Asian summer monsoon (EASM) boundary Miocene may facilitated

Language: Английский

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Phylogeny and biogeography of East Asian evergreen oaks (Quercus section Cyclobalanopsis; Fagaceae): Insights into the Cenozoic history of evergreen broad-leaved forests in subtropical Asia

Molecular Phylogenetics and Evolution, Journal Year: 2017, Volume and Issue: 119, P. 170 - 181

Published: Nov. 23, 2017

Language: Английский

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Impacts of Quaternary glaciation, geological history and geography on animal species history in continental East Asia: A phylogeographic review

Molecular Ecology, Journal Year: 2023, Volume and Issue: 32(16), P. 4497 - 4514

Published: June 18, 2023

Abstract Continental East Asia has a mild Pleistocene climate and complex recent geological history. Phylogeographic studies of animals over the last 30 years have produced several distinctive patterns. Glaciation refugia are numerous not restricted to any particular regions. Most them localized species‐specific, although large refugia, for example mountains SW China, shared by multiple species refugia‐within‐refugia. Furthermore, postglaciation range expansion events vary greatly in time, scale direction. Large‐scale south‐to‐north post‐LGM expansions few mostly occurred northern Additionally, unique geographic features, including three‐step terrain China arid belt, significant impacts on many histories. Overall, glaciations, particularly LGM, history drastically from nondetectable significant. The least southwestern region most dominant north. Geological play more role shaping than climatic changes. patterns among highly consistent with those plants. Future phylogeographic endeavour should be hypothesis‐driven seek processes that underlie common wide use genomic data allow accurate estimates historical population exploration older beyond Pleistocene.

Language: Английский

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Oscillayers: A dataset for the study of climatic oscillations over Plio‐Pleistocene time‐scales at high spatial‐temporal resolution

Global Ecology and Biogeography, Journal Year: 2019, Volume and Issue: 28(11), P. 1552 - 1560

Published: July 22, 2019

In order to understand how species evolutionarily responded Plio-Pleistocene climate oscillations (e.g. in terms of speciation, extinction, migration and adaptation), it is first important have a good understanding those past changes per se. This, however, currently limited due the lack global-scale climatic datasets with high temporal resolution spanning Plio-Pleistocene. To fill this gap, I here present Oscillayers, region-specific bioclim dataset, facilitating study during last 5.4 million years at spatial (2.5 arc-minutes) (10 kyr time periods) resolution. This dataset builds upon interpolated anomalies (Δ layers) between layers Last Glacial Maximum (LGM) that are scaled relative global mean temperature curve, derived from benthic stable oxygen isotope ratios, generate variables for 539 periods. Evaluation scaled, estimates palaeo-climates generated Holocene, Interglacial Pliocene showed agreement independent general circulation models (GCMs) respective periods pattern correlation absolute differences. Oscillayers thus provides new tool studying spatial-temporal patterns evolutionary ecological processes resolution.Nineteen throughout Input data R script recreate all 19 variables.Global 2.5 arc-minutes (4.65 x 4.65 = 21.62 km2 equator).The years. The grain 10 (= periods).Data terrestrial climates (excluding Antarctica) taking sea level into account.All available as ASCII grid files.

Language: Английский

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Optimal data partitioning, multispecies coalescent and Bayesian concordance analyses resolve early divergences of the grape family (Vitaceae)

Cladistics, Journal Year: 2017, Volume and Issue: 34(1), P. 57 - 77

Published: Feb. 6, 2017

Abstract Evolutionary rate heterogeneity and rapid radiations are common phenomena in organismal evolution represent major challenges for reconstructing deep‐level phylogenies. Here we detected substantial conflicts among data sets as well uncertainty concerning relationships lineages of Vitaceae from individual gene trees, supernetworks tree certainty values. Congruent were retrieved by comprehensive comparisons results optimal partitioning analyses, multispecies coalescent approaches the Bayesian concordance method. We found that schemes selected PartitionFinder preferred over those or codon position, unpartitioned model usually performed worst. For a set with conflicting signals, however, outperformed models included more partitions, demonstrating some limitations to effectiveness concatenation these data. transcriptome set, fast methods ( STAR MP ‐ EST ) approach yielded congruent topologies trees concatenated analyses previous studies. Our highlight well‐resolved critical coalescent‐based methods. Future efforts improve accuracy phylogenomic should emphasize development new can accommodate multiple biological processes tolerate missing while remaining computationally tractable.

Language: Английский

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Landscape Features and Climatic Forces Shape the Genetic Structure and Evolutionary History of an Oak Species (Quercus chenii) in East China

Frontiers in Plant Science, Journal Year: 2019, Volume and Issue: 10

Published: Sept. 3, 2019

Major topographic features facilitate intraspecific divergence through geographic isolation. This process may be enhanced by environmental isolation along climatic gradients, but also reduced range shifts under rapid changes. In this study, we examined how topography and climate have interacted over time space to influence the genetic structure evolutionary history of Quercus chenii, a deciduous oak species representative East China flora. Based on nuclear microsatellite variation at 14 loci, identified multiple boundaries that were well associated with persistent landscape barriers China. Redundancy analysis indicated both geography explained similar amounts variation. Ecological differences altitudinal gradients driven between highlands lowlands. However, expansions during Last Interglacial as inferred from approximate Bayesian computation (ABC) increased diversity eliminated differentiation lowland populations via admixture. Chloroplast (cp) DNA three intergenic spacers (2,866 bp in length) total 18 haplotypes, 15 which private single population, probably result long-term among montane habitats. A time-calibrated phylogeny suggested palaeoclimatic changes Miocene underlay lineage major clades. combination ecological niche modeling (ENM), concluded mountainous areas higher stability are more likely glacial refugia preserved phylogenetic diversity, while plains basins acted dispersal corridors for post-glacial south-to-north migration. Our findings provide compelling evidence shaped pattern Q. chenii. Mountains facilitated isolation, whereas lowlands population connectivity especially when experienced expansions.

Language: Английский

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Phylogenomic insights into the reticulate evolution of Camellia sect. Paracamellia Sealy (Theaceae)

Journal of Systematics and Evolution, Journal Year: 2023, Volume and Issue: 62(1), P. 38 - 54

Published: Jan. 12, 2023

Abstract Polyploids are common in Camellia sect. Paracamellia , which contain many important oil crop species. However, their complex evolutionary history is largely unclear. In this study, 22 transcriptomes and 19 plastomes of related species were sequenced assembled, providing the most completed taxa sampling Oleifera C . Phylogenetic trees reconstructed with predicted single‐copy nuclear genes plastomes. demonstrated that should be merged into Cytonuclear discordance network analyses suggested hybridizations among polyploid relatives. The divergence major clades was dated to during middle late Miocene from ancestral Lingnan region, a rapid diversification Quaternary found, probably through hybridization polyploidization. tetraploid meiocarpa Hu may have originated between closely diploid hexaploid oleifera C. Abel (e.g., ) octoploid vietnamensis T. Huang ex could Hybridization polyploidization played an role generating rich variation fruit traits, especially increased size

Language: Английский

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Differential distribution shifts in two subregions of East Asian subtropical evergreen broadleaved forests—a case of Magnoliaceae

Frontiers in Plant Science, Journal Year: 2024, Volume and Issue: 14

Published: Jan. 23, 2024

Aim East Asian subtropical evergreen broad-leaved forests (EBLFs) are composed of western and eastern subregions with different topographical environmental conditions. The distribution shifts over time plants in the two predicted to be different, but difference has seldom been investigated. Methods Potential distributions 53 Magnoliaceae species (22 31 subregion) during last glacial maximum (LGM), present, 2070s were using MaxEnt based on 58 variables. changes range size centroid analyzed. Species-level potential habitats overlaid uncover diversity distribution, discover long-term refugia. Results At significantly larger than those shown by occurrence points. During LGM, 20/22 subregion experienced increases through downwards southward migrations, while decreases (27/31 species) accompanied northward eastward migrations. In future, declines will both found; northwestward exist most (20/22 subregion, northwest- northeastward occur subregion. hotspots a slight shift past upwards mountain region future subregion; shrinks occurred China all regions future. Long-term refugia-preserving was found mountains across entire EBLFs region. Main conclusions Significant differences from present similar revealed subregions. Species no significant could preserved mountainous throughout EBLFs.

Language: Английский

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Full-length transcriptome reveals the pivotal role of ABA and ethylene in the cold stress response of Tetrastigma hemsleyanum

Frontiers in Plant Science, Journal Year: 2024, Volume and Issue: 15

Published: Jan. 31, 2024

Tetrastigma hemsleyanum is a valuable herb widely used in Chinese traditional and modern medicine. Winter cold severely limits the artificial cultivation of this plant, but physiological molecular mechanisms upon exposure to stress T. are unclear. plants with different geographical origins exhibit large differences response stress. In research study, using ecotypes that frost tolerance (FR) sensitivity (FS), we analyzed cottage seedlings simulated treatment; plant hormones were induced both short (2 h) long (9 treatments, which construct full-length transcriptome obtained 76,750 transcripts all mapped 28,805 genes, 27,215 respectively, annotated databases. Kyoto Encyclopedia Genes Genomes (KEGG) pathway analysis showed enrichment hormone signaling pathways. Further shows differently expressed genes (DEGs) concentrated on calcium signaling, ABA biosynthesis signal transduction, ethylene We also found endogenous content increased after treatment, exogenous significantly improved ecotypes. Our results elucidated pivotal role identified key genes.

Language: Английский

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Similar phylogeographic history in a fig species and its obligate pollinators forms parallel genetic structure

Journal of Plant Ecology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

Abstract Closely related and co-distributed species usually share a common phylogeographic history, but it is still largely unclear whether ecologically interacting can respond synchronously to historical climate changes. Here, we focused on fig-pollinator mutualism comprising Ficus pumila var. its obligate pollinators (morphospecies Wiebesia pumilae), collected samples across most of their distribution ranges. We employed both cytoplasmic DNA sequences nuclear microsatellite loci reveal the composition within pollinator test two mutualists exhibited similar postglacial patterns. In three cryptic observed here, dominant were parapatric, covering north south plant’s range, respectively. Similar current spatial genetic structure was detected in plant, with an eastern western cluster. Moreover, for these species, evidence expansion found, potential refugia at last glacial maximum located east west These results suggest synchronous responses Our study therefore shows congruent patterns between highlight role biogeographic factors shaping biodiversity trophic levels.

Language: Английский

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