Rapid and repeated local adaptation to climate in an invasive plant

New Phytologist, Год журнала: 2018, Номер 222(1), С. 614 - 627

Опубликована: Окт. 27, 2018

Summary Biological invasions provide opportunities to study evolutionary processes occurring over contemporary timescales. To explore the speed and repeatability of adaptation, we examined divergence life‐history traits climate, using latitude as a proxy, in native North American introduced European Australian ranges annual plant Ambrosia artemisiifolia . We explored niche changes following introductions climate dynamic models. In common garden, trait by growing seeds collected across three with highly distinct demographic histories. Heterozygosity–fitness associations were used effect invasion history on potential success. accounted for nonadaptive population differentiation 11 598 single nucleotide polymorphisms. revealed centroid shift warmer, wetter climates ranges. identified repeated latitudinal traits, populations positioned at either end clines. Our data indicate rapid adaptation local despite recent bottleneck limiting genetic variation Australia. Centroid shifts suggest more productive environments, potentially contributing between

Язык: Английский

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The rate and potential relevance of new mutations in a colonizing plant lineage

PLoS Genetics, Год журнала: 2018, Номер 14(2), С. e1007155 - e1007155

Опубликована: Фев. 12, 2018

By following the evolution of populations that are initially genetically homogeneous, much can be learned about core biological principles. For example, it allows for detailed studies rate emergence de novo mutations and their change in frequency due to drift selection. Unfortunately, multicellular organisms with generation times months or years, is difficult set up carry out such experiments over many generations. An alternative provided by "natural experiments" started from colonizations invasions new habitats selfing lineages. With limited missing gene flow other lineages, effects easily detected. North America has been colonized historic plant Arabidopsis thaliana, although multiple intercrossing lineages found today, individuals belong a single lineage, HPG1. To determine this lineage substitutions-the subset survived natural selection drift-, we have sequenced genomes plants collected between 1863 2006. We identified 73 modern 27 herbarium specimens belonged Using estimated substitution rate, infer last common HPG1 ancestor lived early 17th century, when was most likely introduced chance Europe. Mutations coding regions depleted compared those portions genome, consistent purifying Nevertheless, handful at high present-day populations. link these detectable phenotypic variance traits known ecological importance, life history growth, which could reflect adaptive value. Our work showcases how, applying genomics methods combination samples colonizing directly study potential evolutionary relevance.

Язык: Английский

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Bridgehead Effects and Role of Adaptive Evolution in Invasive Populations

Trends in Ecology & Evolution, Год журнала: 2018, Номер 33(7), С. 527 - 534

Опубликована: Май 12, 2018

Язык: Английский

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Genomic biosurveillance of forest invasive alien enemies: A story written in code

Evolutionary Applications, Год журнала: 2019, Номер 13(1), С. 95 - 115

Опубликована: Авг. 12, 2019

Abstract The world's forests face unprecedented threats from invasive insects and pathogens that can cause large irreversible damage to the ecosystems. This threatens capacity provide long‐term fiber supply ecosystem services range carbon storage, nutrient cycling, water air purification, soil preservation maintenance of wildlife habitat. Reducing threat forest alien species requires vigilant biosurveillance, process gathering, integrating, interpreting, communicating essential information about pest pathogen achieve early detection warning enable better decision‐making. is challenging due diversity pests need be identified, diverse pathways introduction, difficulty in assessing risk establishment. Genomics powerful new solutions biosurveillance. invasion a story written four chapters: transport, establishment, spread. series processes lead successful leave behind DNA signature tells an invasion. help us understand dynamic, multistep inform management current future introductions. review describes application genomic tools pipelines will accurate identification pathogens, assign outbreak or survey samples putative sources identify spread, assess based on traits impact outcome.

Язык: Английский

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Timing is everything: does early and late germination favor invasions by herbaceous alien plants?

Journal of Plant Ecology, Год журнала: 2016, Номер unknown, С. rtw105 - rtw105

Опубликована: Сен. 22, 2016

AimsPlant invasions represent a unique opportunity to study the mechanisms underlying community assembly rules and species distribution patterns. While superior competitive ability has often been proposed as major driver of successful plant invasions, its significance depends crucially on timing any interaction. We assess whether mismatch in germination phenology can favor establishment alien species, allowing them exploit vacant niches where competition is low. As well having important effects survival, growth fitness asymmetric potential soil legacies resulting from early or late also impact recruitment. However, comes at cost, increases risks exposure unfavorable conditions requires an enhanced abiotic resistance if it lead establishment.

Язык: Английский

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Evolution in a Community Context: Trait Responses to Multiple Species Interactions

The American Naturalist, Год журнала: 2018, Номер 191(3), С. 368 - 380

Опубликована: Янв. 8, 2018

Species that coexist in diverse natural communities interact complex ways alter each other's abundances and affect selection on traits. Consequently, predicting trait evolution may require understanding ecological evolutionary dynamics involving a number of species. In August 2016, the American Society Naturalists sponsored symposium to explore community context, focusing microevolutionary processes. Here we provide an introduction our perspectives this topic by defining context describing some examples when how responses multiple species differ from isolation or two-species communities. We find indirect effects can result nonadditive cannot be predicted pairwise interactions. Genetic correlations traits one adaptation as well other general, multispecies change interactions, which then feed back future changes depend these effects. suggest avenues for research field, including determining circumstances under does not adequately describe trajectories.

Язык: Английский

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Genetic and demographic founder effects have long‐term fitness consequences for colonising populations

Ecology Letters, Год журнала: 2017, Номер 20(4), С. 436 - 444

Опубликована: Фев. 1, 2017

Colonisation is a fundamental ecological and evolutionary process that drives the distribution abundance of organisms. The initial ability colonists to establish determined largely by number founders their genetic background. We explore importance these demographic properties for longer term persistence adaptation populations colonising novel habitat using experimental Tribolium castaneum. introduced individuals from three backgrounds (inbred - outbred) into environment at founding sizes (2-32), tracked seven generations. Inbreeding had negative effects, whereas outbreeding generally positive effects on establishment, population growth long-term persistence. Severe bottlenecks due small reduced variation fitness but did not prevent if originated genetically diverse populations. Thus, we find important independent roles both processes in driving colonisation success.

Язык: Английский

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Recurrent bridgehead effects accelerate global alien ant spread

Proceedings of the National Academy of Sciences, Год журнала: 2018, Номер 115(21), С. 5486 - 5491

Опубликована: Май 7, 2018

Significance Because of the globalization trade and travel, worldwide invasion rates are high. A potential driver global acceleration new invasions is so-called bridgehead effect, in which initial invasive populations serve as source additional via secondary introductions. However, frequency overall importance introductions remain largely unknown. Using a remarkable dataset, spanning nearly 100 years (1914–2013), ant interceptions at air maritime ports United States New Zealand, we found that most arise transport intermediate regions. Our analyses also reveal positive feedback between introduction establishment stages process acting critical increasing rates.

Язык: Английский

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Modelling Hotspots for Invasive Alien Plants in India

PLoS ONE, Год журнала: 2015, Номер 10(7), С. e0134665 - e0134665

Опубликована: Июль 31, 2015

Identification of invasion hotspots that support multiple invasive alien species (IAS) is a pre-requisite for control and management invasion. However, till recently it remained methodological challenge to precisely determine such hotspots. We identified the in India through Ecological Niche Modelling (ENM) using occurrence data from Global Biodiversity Information Facility (GBIF). The predicted area selected were classified into 4 categories based on number model agreements region i.e. high, medium, low very low. About 49% total geographical was be prone at moderate high levels climatic suitability. intersection anthropogenic biomes ecoregions with regions 'high' suitability as hotspot plant Nineteen 47 India, harboured Most ecologically sensitive including 'biodiversity hotspots' coastal coincide hotspots, indicating their vulnerability Besides demonstrating usefulness ENM open source IAS management, present study provides knowledge base guiding formulation an effective policy strategy controlling species.

Язык: Английский

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Epigenetics and the success of invasive plants

Philosophical Transactions of the Royal Society B Biological Sciences, Год журнала: 2021, Номер 376(1826), С. 20200117 - 20200117

Опубликована: Апрель 17, 2021

Biological invasions impose ecological and economic problems on a global scale, but also provide extraordinary opportunities for studying contemporary evolution. It is critical to understand the evolutionary processes that underly invasion success in order successfully manage existing invaders, prevent future invasions. As successful invasive species sometimes are suspected rapidly adjust their new environments spite of very low genetic diversity, we obliged re-evaluate genomic-level translate into phenotypic diversity. In this paper, review work supports idea trait variation, within among populations, can be created through epigenetic or other non-genetic processes, particularly clonal invaders where somatic changes persist indefinitely. We consider several have been implicated as adaptive success, focusing various forms 'genomic shock' resulting from exposure environmental stress, hybridization whole-genome duplication (polyploidy), leading patterns gene expression re-programming contribute variation even novelty. These mechanisms transgressive phenotypes, including hybrid vigour novel traits, may thus help huge successes some plant especially those genetically impoverished. This article part theme issue 'How does epigenetics influence course evolution?'

Язык: Английский

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