Parallel local adaptation to an alpine environment in Arabidopsis arenosa

Journal of Ecology, Год журнала: 2022, Номер 110(10), С. 2448 - 2461

Опубликована: Июль 6, 2022

Abstract Parallel local adaptation, that is, when distinct genetic lineages independently adapt to the same selective environment, provides strong evidence for action of natural selection. A few cases parallel adaptation were reported in plants but underlying mechanisms promoting or preventing response, such as balance between migration and selection, rarely quantified. Here, we conducted a transplant experiment test whether foothill–alpine population pairs Arabidopsis arenosa exhibited similar adaptive responses contrasting alpine environment. We further investigated selection patterns these populations. Seedlings 16 foothill populations A. from four mountain regions (one occupied by diploid three tetraploid populations) transplanted into one low‐ high‐elevation site. recorded fitness proxies over two growing seasons elevation‐of‐origin advantage was manifested way across origin. Then, quantified strength on traits at each transplantation site used coalescent simulations estimate past gene flow intensity pair region. demonstrated elevation difference terms survival, number flowering plants, stem height accumulation above‐ground dry biomass; other (rosette size, leaves, stems flowers) rather regional‐specific patterns. In addition, found minor effects ploidy level recorded. Our analysis revealed probably achieved differential pressure low versus high combination with lack limited Synthesis . show previously documented morphological distinctness compared their counterparts, which has been hypothesized be driven is indeed mirrored differences consistent adaptation. results provide experimental support repeatability evolution highlight prominent role divergent

Язык: Английский

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Male and female recombination landscapes of diploid Arabidopsis arenosa

Genetics, Год журнала: 2022, Номер 220(3)

Опубликована: Янв. 6, 2022

The number and placement of meiotic crossover events during meiosis have important implications for the fidelity chromosome segregation as well patterns inheritance. Despite functional importance recombination, recombination landscapes vary widely among within species, this can a strong impact on evolutionary processes. A good knowledge is model systems in ecological genetics, since it improve interpretation genomic differentiation genome evolution, provides an starting point understanding causes consequences rate variation. Arabidopsis arenosa powerful genetic studying molecular basis adaptation evolution. Here, we generate maps 2 diploid A. individuals from distinct lineages where prior that genes show evidence selection. We complement with cytological approaches to map quantify rates, test idea these populations might recombination. explore how differs at level populations, individuals, sexes regions. positioning crossovers along correlates their number, presumably consequence interference, discuss effect cause differences landscape or species. identify several instances female distortion. found averaged genome-wide lower sex subtler than thaliana.

Язык: Английский

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Population Genomic Analysis of Diploid-Autopolyploid Species

Methods in molecular biology, Год журнала: 2023, Номер unknown, С. 297 - 324

Опубликована: Янв. 1, 2023

Язык: Английский

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The genetic architecture and evolution of life-history divergence among perennials in theMimulus guttatusspecies complex

Proceedings of the Royal Society B Biological Sciences, Год журнала: 2021, Номер 288(1948)

Опубликована: Апрель 7, 2021

Ecological divergence is a fundamental source of phenotypic diversity between closely related species, yet the genetic architecture most ecologically relevant traits poorly understood. Differences in elevation can impose substantial divergent selection on both complex, correlated suites (such as life-history), well novel adaptations. We use Mimulus guttatus species complex to assess if accompanied by trait group perennials and determine this divergence. find that associated with differences life-history, unique trait, production rhizomes. The two largely explained few mid-to-large effect quantitative loci (QTLs). However, presence QTLs correlated, but opposing effects multiple leads some hybrids transgressive combinations. Lastly, we ability produce rhizomes changes through development, wherein rhizomes, only later development. Our results suggest elevational may shape life-history perennials, aspects have implications for hybrid fitness nature.

Язык: Английский

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Homoplastic versus xenoplastic evolution: exploring the emergence of key intrinsic and extrinsic traits in the montane genus Soldanella (Primulaceae)

The Plant Journal, Год журнала: 2024, Номер 118(3), С. 753 - 765

Опубликована: Янв. 13, 2024

SUMMARY Specific ecological conditions in the high mountain environment exert a selective pressure that often leads to convergent trait evolution. Reticulations induced by incomplete lineage sorting and introgression can lead discordant patterns among gene species trees (hemiplasy/xenoplasy), providing false illusion traits under study are homoplastic. Using phylogenetic networks, we explored effect of exchange on evolution Soldanella , genus profoundly influenced historical introgression. At least three features evolved independently multiple times: single‐flowered dwarf phenotype, dysploid cytotype, generalism. The present analyses also indicated recurring occurrence stoloniferous growth might have been prompted an event between ancestral still extant species, although its emergence via cannot be completely ruled out. Phylogenetic regression suggested independent larger genomes snowbells is most likely result interplay hybridization events euploid taxa hostile environments at range margins genus. key intrinsic extrinsic has significantly impacted not only but recent events.

Язык: Английский

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Climate-driven convergent evolution in riparian ecosystems on sky islands

Scientific Reports, Год журнала: 2023, Номер 13(1)

Опубликована: Фев. 16, 2023

Abstract Climate-induced evolution will determine population persistence in a changing world. However, finding natural systems which to study these responses has been barrier estimating the impact of global change on broad scale. We propose that isolated sky islands (SI) and adjacent mountain chains (MC) are laboratories for studying long-term contemporary climatic pressures populations. used greenhouse common garden trees test whether populations SI exposed hot dry climates since end Pleistocene have phenotypically diverged from MC, if converged traits. show: (1) Populus angustifolia across SI, reproductive productivity traits, (2) traits (cloning aboveground biomass, respectively) significantly correlated, suggesting genetic linkage between them, (3) trait variation is driven by both selection drift. These shifts represent potentially beneficial phenotypes results suggest SI–MC comparison laboratory, as well predictive framework, climate globe.

Язык: Английский

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Patterns and repeatability of multi‐ecotype assemblages of sympatric salmonids

Global Ecology and Biogeography, Год журнала: 2023, Номер 32(12), С. 2257 - 2270

Опубликована: Окт. 4, 2023

Abstract Aim High repeatability among assemblages of closely related but ecologically distinct ecotypes implies predictability in evolution and assembly communities. The conditions under which ecotype form predictably, the reasons, have been little investigated. Here, we test whether declines as number builds. Location Postglacial lakes with a circumboreal distribution. Time Period Data were extracted from studies published between 1982 2019. Major Taxa Studied Ecotype two Salmonid genera – Salvelinus Coregonus . Fish postglacial commonly occur pairs ecotypes, typically pelagic littoral/benthic form, , contain multiple sympatric ecotypes. Methods We used meta‐analysis to empirically assess how varies across seven examined use broad niche categories well underlying phenotypic traits. Results Within multi‐ecotype did not break down addition third or fourth ecotype. However, was largely absent independent Repeatability trait frequency distributions both genera, yet associations means evident, especially Main Conclusions These results show that can vary greatly lineages; need builds; high may result despite marked differences distribution means. findings only affirm presence repeatable early stages divergence fishes at global scale, also highlight variability taxa

Язык: Английский

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Parallelism in gene expression between foothill and alpine ecotypes in Arabidopsis arenosa

The Plant Journal, Год журнала: 2020, Номер 105(5), С. 1211 - 1224

Опубликована: Дек. 1, 2020

Parallel adaptation results from the independent evolution of similar traits between closely related lineages and allows us to test what extent is repeatable. Similar gene expression changes are often detected but identity genes shaped by parallel selection causes parallelism remain largely unknown. By comparing genomes transcriptomes four distinct foothill-alpine population pairs across treatments, we addressed genetic underpinnings, plasticity functional consequences in alpine adaptation. Seeds eight populations Arabidopsis arenosa were raised under treatments that differed temperature irradiance, factors varying strongly with elevation. Parallelism differential foothill ecotypes was quantified RNA-seq leaves young plants. manipulating also tested for (i.e., gene-environment interaction, GEI). In spite global non-parallel patterns transcriptome wide, found significant at level individual loci an over-representation involved biotic stress response. addition, demonstrated GEI, indicating a shared response originally versus environmental variation mountain regions. A fraction showing encompassed outliers genomic differentiation, greater enrichment such variants cis-regulatory elements some summary, our suggest frequent evolutionary repeatability associated colonization challenging environment combines constitutive differences plastic interaction surrounding environment.

Язык: Английский

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Repeated colonization of alpine habitats by Arabidopsis arenosa viewed through freezing resistance and ice management strategies

Plant Biology, Год журнала: 2022, Номер 24(6), С. 939 - 949

Опубликована: Июль 14, 2022

Success or failure of plants to cope with freezing temperatures can critically influence plant distribution and adaptation new habitats. Especially in alpine environments, frost is a likely major selective force driving adaptation. In Arabidopsis arenosa (L.) Lawalrée, populations have evolved independently different mountain ranges, enabling studying mechanisms acclimation environments. We tested for heritable, parallel differentiation resistance, cold potential ice management strategies using eight foothill populations. Plants from three European ranges (Niedere Tauern, Făgăraș Tatra Mountains) were grown seeds tetraploid four common gardens, together diploid the Mountains. Freezing resistance was assessed controlled treatments measuring effective quantum yield photosystem II, by infrared video thermography cryomicroscopy. The ecotype had higher than ecotype, whereby this more pronounced However, no ecotypic found one region (Făgăraș), where ancient lineage evolutionary history. Upon freezing, an lens within lacuna between palisade spongy parenchyma tissues formed separation leaf tissues, mechanism not previously reported herbaceous species. dynamic adjustment temperature conditions may be particularly important environments characterized large fluctuations. Furthermore, formation extracellular useful strategy avoid tissue damage during freezing.

Язык: Английский

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Unravelling some factors affecting sexual reproduction in rock-specialist shrub: Insight from an endemic Daphne arbuscula (Thymelaeaceae)

PLoS ONE, Год журнала: 2024, Номер 19(5), С. e0300819 - e0300819

Опубликована: Май 9, 2024

The role of endemic species in global biodiversity is pivotal, and understanding their biology ecology imperative for fitness long-term survival, particularly the face ongoing climatic oscillations. Our primary goal was to investigate sexual reproduction level endangered Western Carpathian Daphne arbuscula (Thymelaeaceae), which inhabits extreme rocky habitats, comprehend influence specific factors on its reproductive success. We conducted research across four populations, varying size environmental conditions. Over two years, we monitored flower fruit production, analyzed genetic variability within among studied pollination mechanisms. proved be strictly self-incompatible, with significant variations production populations seasons. average percentage consistently remained below 50% indicating challenges reproduction. Cold harsh weather during phase had a substantial negative impact efficacy, leading decreased production. Nevertheless, several individuals sheltered microhabitats displayed significantly higher ranging from 60% 83%, emphasizing critical microhabitat heterogeneity sustaining this species. found no pronounced differences diversity or suggesting that may not critically success implications our findings might paramount importance survival D. offer valuable insights development effective conservation strategies

Язык: Английский

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