Evaluating the Centre‐Periphery Hypothesis Through Genomic Phylogeographical Comparisons of Two Sister Species of Liquidambar in East Asia's Tertiary Relict Forests

Journal of Biogeography, Год журнала: 2025, Номер unknown

Опубликована: Фев. 3, 2025

ABSTRACT Aim Understanding the spatial distribution of genetic variation within species is a central tenet in evolutionary biology and conservation biology. This study explores how historical demographic processes and/or environmental factors interact to affect contemporary adaptive potential, with specific focus on testing ‘centre‐periphery’ hypothesis (CPH). Location Subtropical China. Taxon Liquidambar. Methods We combined comparative phylogeography, landscape genomics niche modelling investigate interplay between history past/current shaping Liquidambar formosana L. acalycina , sister pair East Asia's Tertiary relict forests. Results In both species, core populations occupied highly suitable habitats at highest densities. Consistent CPH, population diversity decreased, differentiation increased, from centre margin but not likely reflecting different histories relative contributions geography, past (LGM) current climates their present‐day variation. addition, showed higher potential future climate change than . Main Conclusions demonstrates that differences adaptability among closely related can be explained by contrasting responses multiple geographic/climatic factors. turn, it should also expand our understanding while informing efforts for these two species.

Язык: Английский

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Ultra-Conserved Element Phylogenomics of New WorldPonera(Hymenoptera: Formicidae) Illuminates the Origin and Phylogeographic History of the Endemic Exotic AntPonera exotica

Insect Systematics and Diversity, Год журнала: 2019, Номер 3(2)

Опубликована: Март 1, 2019

The genus Ponera is a lineage of leaf litter ants, with center diversity in the Indo-Australian region. Two species occur New World; however, uncertainty exists regard to their biogeographic origins and limits, especially for isolated cloud forest populations Middle America. We investigate geographic distribution, phylogeny, phylogeography these two better characterize American ant fauna gain insight into biogeography taxa that span hemispheres. Sequencing Ultra-Conserved Element (UCE) loci was used infer phylogenetic relationships, estimate divergence dates, test boundaries. widespread native exotica P. pennsylvanica are each more closely related Old World relatives than they other, implying independent colonizations World. most European coarctata, while clade species. abundant throughout eastern United States, scattered occurrences further west. occurs from southern States Nicaragua. Both have alate ergatoid queens. Sequenced specimens multiple reveal pectinate phylogeographic structure, north south, potential cryptic America distribution pattern mirrors many plant animal may be result climatic cooling Pliocene followed by repeated glacial cycles Pleistocene, which condensed fragmented mesic habitat.

Язык: Английский

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A mistletoe tale: postglacial invasion of Psittacanthus schiedeanus (Loranthaceae) to Mesoamerican cloud forests revealed by molecular data and species distribution modeling

BMC Evolutionary Biology, Год журнала: 2016, Номер 16(1)

Опубликована: Апрель 12, 2016

Ecological adaptation to host taxa is thought result in mistletoe speciation via race formation. However, historical and ecological factors could also contribute explain genetic structuring particularly when races are distributed allopatrically. Using sequence data from nuclear (ITS) chloroplast (trnL-F) DNA, we investigate the differentiation of 31 Psittacanthus schiedeanus (Loranthaceae) populations across Mesoamerican species range. We conducted phylogenetic, population spatial analyses on 274 individuals P. gain insight evolutionary history these populations. Species distribution modeling, isolation with migration Bayesian inference methods were used infer transition invasion, which scenarios compared through posterior probabilities. Our revealed shallow levels structure three groups present sample area. Nine haplotypes identified after sequencing trnL-F intergenic spacer. These showed phylogeographic structure, restricted gene flow corresponding individuals/populations separated by habitat (cloud forest localities San Luis Potosí northwestern Oaxaca Chiapas, xeric vegetation central Oaxaca, tropical deciduous forests Chiapas), post-glacial expansions potentially invasion types. Similarly, 44 ITS ribotypes suggest despite fact that most frequent widespread indicating effective pollen. Gene estimates, a significant signal demographic expansion, range shifts under past climatic conditions predicted modeling mistletoes cloud forests. Approximate Computation (ABC) strongly supported scenario simultaneous divergence among isolated recently. results provide support for predominant role environmental driving parrot-flower mistletoes. The ABC consistent independent identity, types recently populations, accumulating slight phenotypic differences due recent habitats. Under this scenario, fluctuations throughout Pleistocene would have altered suitable Mesoamerica leading variation continuity isolation. findings add an understanding colonization shaping communities region.

Язык: Английский

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Genome sequences and population genomics reveal climatic adaptation and genomic divergence between two closely related sweetgum species

The Plant Journal, Год журнала: 2024, Номер 118(5), С. 1372 - 1387

Опубликована: Фев. 11, 2024

SUMMARY Understanding the genetic basis of population divergence and adaptation is an important goal in genetics evolutionary biology. However, relative roles demographic history, gene flow, and/or selective regime driving genomic divergence, climatic adaptation, speciation non‐model tree species are not yet fully understood. To address this issue, we generated whole‐genome resequencing data Liquidambar formosana L. acalycina , which broadly sympatric but altitudinally segregated Tertiary relict forests subtropical China. We integrated environmental to investigate these two sister species. inferred a scenario allopatric during late Miocene, followed by secondary contact Holocene. identified multiple islands elevated that mainly evolved through hitchhiking recombination rate variation, likely fostered long‐term refugial isolation recent differential introgression low‐recombination regions. also found some candidate genes with divergent selection signatures potentially involved reproductive isolation. Our results contribute better understanding how Tertiary/Quaternary change influenced speciation, introgressive hybridization East Asia's flora. In addition, they should facilitate future evolutionary, conservation genomics, molecular breeding studies genus medicinal ornamental values.

Язык: Английский

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Phylogenetic analyses of the subfamily Scarabaeinae (Coleoptera: Scarabaeidae) provide new insights into the Mexican Transition Zone theory

Zootaxa, Год журнала: 2024, Номер 5415(4), С. 501 - 528

Опубликована: Фев. 22, 2024

Being areas of biotic overlap located between biogeographic regions, transition zones function as natural laboratories. The present study explores the phylogenetic history dung beetle subfamily Scarabaeinae, in order to an evolutionary scenario that allows inference Mexican Transition Zone (MTZ) and integration distributional patterns its biota. species sampling included 94 New World taxa (93 Scarabaeinae one Aphodiinae). relationships main clades recovered our were supported with PP values ≥ 0.95. Based on BAYAREALIKE model reconstruct ancestral we inferred a complex 19 dispersal events, 15 vicariance three extinctions. We suggest Ancient Neotropical Tropical Paleoamerican represent most likely for MTZ, which probably settle there during Eocene-Oligocene. rest assembled subsequent periods. results MTZ had two separate formation stages: Paleo-MTZ (Eocene-Miocene) current (Pliocene-Anthropocene). conclude well dispersal-vicariance fits “out tropics” model.

Язык: Английский

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Changes in the distribution of cloud forests during the last glacial predict the patterns of genetic diversity and demographic history of the tree fern Alsophila firma (Cyatheaceae)

Journal of Biogeography, Год журнала: 2014, Номер 41(12), С. 2396 - 2407

Опубликована: Сен. 11, 2014

Abstract Aim We investigated changes in distribution of cloud forests during the last 130 kyr, and tested whether these explain spatial patterns genetic diversity tree fern Alsophila firma (Cyatheaceae), a species restricted to this habitat. Location Mexican forests. Methods sampled 204 individuals from 16 localities. Genetic data consisted DNA sequences for five chloroplast microsatellites one nuclear gene. used modelling predict historical glacial period, using two palaeoclimate models: Model Interdisciplinary Research on Climate (MIROC) Community System (CCSM). correlation between temporal forest stability an approximate Bayesian computation (ABC) framework test plausible demographic scenarios. Results The range fluctuations observed kyr are key factors affecting variation A. . Increased areas with high environmental suitability is probably result increased population sizes higher interpopulation connectivity. In accordance expansion predicted by CCSM, supported scenario occurring c 110 ka, followed divergence c. 20 ka. However, dynamics involving suitable microclimates could reconcile MIROC patterns. Main conclusions were congruent genetics choice model has substantial impact inferences drawn use alternative hypotheses biome can provide common analytical evaluating cohesiveness communities.

Язык: Английский

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Biogeographic analysis of the woody plants of the Southern Appalachians: Implications for the origins of a regional flora

American Journal of Botany, Год журнала: 2015, Номер 102(5), С. 780 - 804

Опубликована: Май 1, 2015

We investigated the origins of 252 Southern Appalachian woody species representing 158 clades to analyze larger patterns biogeographic connectivity around northern hemisphere. tested hypotheses regarding timing disjunctions eastern Asia and among areas North America.We delimited into biogeographically informative clades, compiled sister-area data, generated graphic representations area connections across clades. calculated taxon diversity within plotted divergence times.Of total diversity, 45% were distributed 25 American endemic Sister taxa America proportionally equal in frequency, accounting for over 50% connections. At increasing phylogenetic depth, Old World dominated. Divergence times 65 with intercontinental continuous, whereas 11 intracontinental western nine Mexico temporally congruent.Over one third have likely undergone speciation region America. The pattern is asymmetric, consisting mostly mixed-aged, low-diversity connecting World, a minority New time data suggest that climate change Late Miocene Early Pliocene disjunct Continuous splitting during last 45 million years support hypothesis widespread distributions formed repeatedly favorable periods, serial cooling trends producing pseudocongruent between Asia.

Язык: Английский

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Genetic diversity and structure of wild populations ofCarica papayain Northern Mesoamerica inferred by nuclear microsatellites and chloroplast markers

Annals of Botany, Год журнала: 2016, Номер 118(7), С. 1293 - 1306

Опубликована: Окт. 6, 2016

Few studies have evaluated the genetic structure and evolutionary history of wild varieties important crop species. The papaya (Carica papaya) is a key element early successional tropical sub-tropical forests in Mexico, constitutes reservoir for potential In this study we aimed to determine how diverse structured variability populations C. Northern Mesoamerica. Moreover, assessed if coincide with hypothetized (1) pre-Pleistocene events (Isthmus Tehuantepec sinking), (2) Pleistocene refugia or (3) recent patterns.We used six nuclear two chloroplast (cp) DNA markers assess diversity phylogeographical 19 its natural distribution Mesoamerica.We found high (Ho = 0·681 markers, h 0·701 cpDNA markers) gene flow between (migration r up 420 km). A lack was (NST < GST), whereas population inferred markers. Evidence indicates that did not play an role structuring papaya.Because life characteristics ancient suggest dispersed throughout lowland rain Mexico (along coastal plains foothills Sierras). This scenario supports hypothesis Mesoamerica experience climate fluctuations during Pleistocene, could promoted long-distance dispersal rapid colonization rainforests. results obtained human disturbances. fragmentation habitats appears be main driver structuring, major threat dispersion survival species wild.

Язык: Английский

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Resolving relationships and phylogeographic history of the Nyssa sylvatica complex using data from RAD-seq and species distribution modeling

Molecular Phylogenetics and Evolution, Год журнала: 2018, Номер 126, С. 1 - 16

Опубликована: Апрель 6, 2018

Язык: Английский

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Ups and downs: Genetic differentiation among populations of the Podocarpus (Podocarpaceae) species in Mesoamerica

Molecular Phylogenetics and Evolution, Год журнала: 2019, Номер 138, С. 17 - 30

Опубликована: Май 23, 2019

Язык: Английский

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