Sympatric parallel diversification of major oak clades in the Americas and the origins of Mexican species diversity

New Phytologist, Год журнала: 2017, Номер 217(1), С. 439 - 452

Опубликована: Сен. 18, 2017

Oaks (Quercus, Fagaceae) are the dominant tree genus of North America in species number and biomass, Mexico is a global center oak diversity. Understanding origins diversity key to understanding biodiversity northern temperate forests. A phylogenetic study biogeography, niche evolution diversification patterns Quercus was performed using 300 samples, 146 species. Next-generation sequencing data were generated restriction-site associated DNA (RAD-seq) method. time-calibrated maximum likelihood phylogeny inferred analyzed with bioclimatic, soils, leaf habit reconstruct biogeographic evolutionary history American oaks. Our highly resolved demonstrates sympatric parallel climatic niche, habit, rates. The two major clades arose what now boreal zone radiated, parallel, from eastern into Central America. adapted rapidly transitions. Mexican oaks particularly numerous, not because origin, but high rates lineage along moisture gradients between evergreen deciduous habits. Sympatric has shaped

Язык: Английский

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Intercontinental disjunctions between eastern Asia and western North America in vascular plants highlight the biogeographic importance of the Bering land bridge from late Cretaceous to Neogene

Journal of Systematics and Evolution, Год журнала: 2016, Номер 54(5), С. 469 - 490

Опубликована: Авг. 19, 2016

Abstract This review shows a close biogeographic connection between eastern Asia and western North America from the late Cretaceous to Neogene in major lineages of vascular plants (flowering plants, gymnosperms, ferns lycophytes). Of Asian–North American disjuncts, conifers exhibit high proportion disjuncts America. Several also show recent disjunct pattern two areas. In flowering is commonly shown temperate elements northeastern northwestern America, as well relict boreotropical mesophytic coniferous floras. The many cases intercontinental disjunctions supported by phylogenetic analyses highlight importance Bering land bridge and/or plant migrations across Beringian region Neogene, especially during Miocene. has permitted filtering migration certain taxa since Pliocene after opening Strait, conspecific or closely related species occur on both sides Beringia.

Язык: Английский

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The role of land bridges, ancient environments, and migrations in the assembly of the North American flora

Journal of Systematics and Evolution, Год журнала: 2018, Номер 56(5), С. 405 - 429

Опубликована: Янв. 18, 2018

Abstract Continental‐scale assembly of floras results from past and present in situ diversification association with several external processes. Among these processes are the making breaking connections among landmasses. Connections landmasses constantly flux as climates landscapes along connection corridors, so that or land bridges, may either facilitate restrict migration at a given time. Across changing landscape‐level organismal factors include dispersal potential vectors propagules, competition, predation, distributions altered by pathogens. Assembly flora is, therefore, outcome complex, interacting, temporally‐varying render simplistic explanations unlikely. In case North America, continent experienced ephemeral adjacent regions via five bridges over last 100 Ma different times under specific landscape morphologies, including edaphic characteristics. Here, I emphasize earliest connections, Beringia, which probably comprised an initially‐incomplete bridge during Cretaceous Paleocene resulting compression, fragmentation, rotation Asian‐North American sub‐blocks America began moving westward northern portion Mid‐Atlantic Ridge. During same time, additional was added to Beringia accretion terranes subduction edge Pacific Plate beneath American‐Asian Plates Eocene form Aleutian Islands. Other between were Atlantic, Antilles, Central Magellan bridge.

Язык: Английский

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Evolutionary Legacy Effects on Ecosystems: Biogeographic Origins, Plant Traits, and Implications for Management in the Era of Global Change

Annual Review of Ecology Evolution and Systematics, Год журнала: 2016, Номер 47(1), С. 433 - 462

Опубликована: Сен. 12, 2016

Biogeographic origins of plant lineages are often reflected in species functional traits, with consequences for community assembly, diversity, and ecosystem function. The climatic environmental conditions which evolved have lasting influence (legacy effects) through phylogenetic conservatism traits that underlie assembly drive processes. Legacy effects may direct function or be linked, owing to lineage history, impact ecosystems. Evolutionary priority effects, driven by the order colonization diversification, as well migration barriers historical changes, shaped diversity composition regional floras their functions. We examine likely biogeographic history responses global change consider how understanding linkages between origins, can aid management restoration ecosystems globally face rapid change.

Язык: Английский

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A revision of the minor species group in the millipede genus Nannaria Chamberlin, 1918 (Diplopoda, Polydesmida, Xystodesmidae)

ZooKeys, Год журнала: 2021, Номер 1030, С. 1 - 180

Опубликована: Апрель 13, 2021

Millipedes in the family Xystodesmidae (Polydesmida) are often referred to as “colorful, flat-backed millipedes” for their bright aposematic coloration and tendency form Müllerian mimicry rings Appalachian region. However, there many species of that do not display colorful warning patterns, instead have more cryptic appearances. Perhaps this reason, groups such genus Nannaria remained understudied, despite containing a large number undescribed species. Before his death 2012, R. L. Hoffman worked on revision , synthesized material drawings since 1949. Here work is continued, inferring molecular phylogeny Nannariini ( + Oenomaea pulchella ), revealing two clades within genus. One clade named minor group, second wilsoni group. This revision, using phylogenetic framework, basis descriptions 35 new A multi-gene used make taxonomic changes taxon. Eleven putative also illustrated discussed. Additionally, detailed collection, natural history habitat notes, distribution maps, key group provided. These items genus, which hopefully will aid conservation evolutionary investigations understudied

Язык: Английский

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Phytogeographic History of the Tea Family Inferred Through High-Resolution Phylogeny and Fossils

Systematic Biology, Год журнала: 2021, Номер 70(6), С. 1256 - 1271

Опубликована: Июнь 8, 2021

The tea family (Theaceae) has a highly unusual amphi-Pacific disjunct distribution: most extant species in the are restricted to subtropical evergreen broadleaf forests East Asia, while handful of occur exclusively and tropical Americas. Here, we used an approach that integrates rich fossil evidence this group with phylogenies biogeographic analysis study processes behind distribution pattern. We first combined genome-skimming sequencing existing molecular data build robust species-level phylogeny for c.130 Theaceae species, resolving important unclarified relationships. then developed empirical Bayesian method incorporate from specimens into historical analyses account spatiotemporal history fossils. compared our alternative show it provides consistent results significantly reduces computational demands which allows much larger sets. Our revealed circumboreal early Cenozoic Miocene inferred repeated expansions retractions modeled Northern Hemisphere, suggesting current could be remnant continuous associated boreotropical forest been hypothesized occupy northern latitudes Cenozoic. These contradict studies only considered distributions showcase necessity integrating phylogeny-based parametric models improve reliability biogeographical events. [Biogeography; genome skimming; phylogenomics; plastid genome; Theaceae.].

Язык: Английский

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Phylogenomics, biogeography, and evolution of morphology and ecological niche of the eastern Asian–eastern North AmericanNyssa(Nyssaceae)

Journal of Systematics and Evolution, Год журнала: 2020, Номер 58(5), С. 571 - 603

Опубликована: Май 9, 2020

Abstract Nyssa (Nyssaceae, Cornales) represents a classical example of the well‐known eastern Asian–eastern North American floristic disjunction. The genus consists three species in Asia, four America, and one Central America. Species are ecologically important trees Asian forests. distribution living rich fossil record make it an excellent model for understanding origin evolution However, despite small number species, relationships within have remained unclear not been elucidated using molecular approach. Here, we integrate data from 48 nuclear genes, fossils, morphology, ecological niche to resolve relationships, elucidate its biogeographical history, investigate morphology niches, aiming at better EA–ENA Results showed that (CAM) talamancana was sister remaining which were divided among three, rapidly diversified subclades. Estimated divergence times history suggested had ancestral range Eurasia western America late Paleocene. rapid diversification occurred early Eocene, followed by multiple dispersals between Erasian continents. experienced two major episodes extinction Oligocene end Neogene, respectively. N. relic lineage boreotropical flora Paleocene/Eocene boundary once results supported importance both Atlantic land bridge Bering (BLB) Paleogene Neogene dispersals, respectively, as well role refugia flora. total‐evidence‐based dated phylogeny pattern macroevolution coincided with paleoclimatic changes. We found evolutionary changes (including wood anatomy leaf traits) niches (precipitation temperature) disjunct, supporting selection driving trait evolutions after geographic isolation. also demonstrated challenges phylogenomic studies lineages histories. concatenation gene can lead inference strongly incongruent tree. conflicts genealogies did seem impose strong effect on time dating our case. Furthermore, events may be recovered analysis BEAST if critical constraints relevant nodes available. Our study provides complex bidirectional exchanges plants Paleogene, but “out Asia” migrations explain present disjunct EA ENA.

Язык: Английский

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The evolution and diversification of the red oaks of the California Floristic Province (Quercus section Lobatae, series Agrifoliae)

American Journal of Botany, Год журнала: 2017, Номер 104(10), С. 1581 - 1595

Опубликована: Окт. 1, 2017

The California Floristic Province (CA-FP) is a unique and diverse region of floral endemism, yet the timing nature divergence diversification many lineages remain underexplored. We seek to elucidate evolutionary history red oaks CA-FP, Agrifoliae.We collected PstI-associated RAD-seq data as well morphometrics from individuals four species across their ranges, including varieties hybrids. Phylogeny times were estimated. analyzed morphological differentiation in over 70 plants using PCA assessed delimitation admixture genotype clustering analysis 40 plants.We find that Agrifoliae are monophyletic sister all other oak species. Within Agrifoliae, supported, with Quercus kelloggii clade subevergreen taxa: (Quercus agrifolia - (Q. parvula + Q. wislizeni)). Molecular morphometric analyses equivocal for named varieties. Notably, var. tamalpaisensis appears be part hybrid swarm between wislizeni. Dating estimates concordant previous hypotheses geological evidence, occurring 10 20 million years ago.The represent geographically discrete, early-diverging lineage diversified during period drying warming associated Sierran uplift middle Miocene. within supports current taxonomy, an east-west level pattern wislizeni) north-south intraspecific patterns some degree, although latter require additional study.

Язык: Английский

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First genome‐wide analysis of the endangered, endemic lichen Cetradonia linearis reveals isolation by distance and strong population structure

American Journal of Botany, Год журнала: 2018, Номер 105(9), С. 1556 - 1567

Опубликована: Авг. 29, 2018

Premise of the Study Lichenized fungi are evolutionarily diverse and ecologically important, but little is known about processes that drive their diversification genetic differentiation. Distributions often assumed to be wholly shaped by ecological requirements rather than dispersal limitations. Furthermore, although asexual sexual reproductive structures observable, lack information recombination rates makes inferences strategies difficult. We investigated population genomics Cetradonia linearis , a federally endangered lichen in southern Appalachians eastern North America, test relative contributions environmental geographic distance shaping structure, characterize mating system genome‐wide recombination. Methods Whole‐genome shotgun sequencing was conducted generate data for 32 individuals C. . A reference genome assembled, reads from all samples were aligned set single‐nucleotide polymorphisms further analyses. Key Results found evidence low isolation distance, not environment. The species putatively unisexual, given only one mating‐type locus found. Hindcast distribution models diversity support having larger range during Last Glacial Maximum portion its current extent. Conclusions Our findings contribute understanding factors shape more broadly. Because populations highly genetically differentiated, extirpation any would mean loss unique diversity; therefore, our results continued conservation this species.

Язык: Английский

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Biogeography and ecological niche evolution in Diapensiaceae inferred from phylogenetic analysis

Journal of Systematics and Evolution, Год журнала: 2020, Номер 58(5), С. 646 - 662

Опубликована: Июнь 5, 2020

Abstract Diapensiaceae (Ericales) are a small family of about 15 species. Within this clade, two species broadly distributed throughout the Northern Hemisphere, whereas remaining have disjunct distribution between eastern North America and Asia. To address patterns processes diversification in Diapensiaceae, we conducted biogeographic analyses inferred shifts ecological niche across phylogeny clade. Although been focus multiple phylogenetic studies, previous studies taxonomically limited. This study has greatly improved underpinning for with most inclusive taxonomic sampling thus far, employing both nuclear plastid gene sequence data at least one sample per family. Our estimates indicate that genera variously diverged Eocene, Oligocene, early to mid‐Miocene. The analysis suggests probable ancestor crown clade originated Nearctic, vicariance events contributing current taxa. Ecological niche, when considered context, was observed be clustered on basis realm. In general, greater overlap found younger nodes divergence among distantly related Diversification appears shaped by large‐scale factors, such as vicariance, an closely

Язык: Английский

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