Abstract Jack pine ( Pinus banksiana Lamb.) is a broadly distributed North American conifer and its current range was covered by the Laurentian ice sheet during last glacial maximum. To infer about history postglacial colonization of this boreal species, range‐wide genetic variation assessed using new highly variable minisatellite‐like marker mitochondrial genome. Among 543 trees analysed, 14 distinct haplotypes were detected, which corresponded to different repeat numbers 32‐nucleotide...

Abstract The Canadian side of the Pacific Northwest was almost entirely covered by ice during last glacial maximum, which has induced vicariance and genetic population structure for several plant animal taxa. Lodgepole pine ( Pinus contorta Dougl. ex. Loud.) a wide latitudinal longitudinal distribution in Northwest. Our main objective to identify relictual signatures species search evidence distinct refugia A maternally inherited mitochondrial DNA minisatellite‐like marker used decipher...

The secondary compounds of pines (Pinus) can strongly affect the physiology, ecology and behaviors bark beetles (Coleoptera: Curculionidae, Scolytinae) that feed on sub-cortical tissues hosts. Jack pine (Pinus banksiana) has a wide natural distribution range in North America (Canada USA) thus variations its compounds, particularly monoterpenes, could host expansion invasive mountain beetle (Dendroctonus ponderosae), which recently expanded into novel jack boreal forest. We investigated...

The genetic structure of jack pine (Pinus banksiana Lamb.), a North American boreal conifer with large longitudinal distribution, was investigated to test for the possible existence genetically distinct lineage in Maritimes region northeastern America, which could be indicative mid-latitude coastal refuge during last glaciation. •One maternally inherited mitochondrial DNA (mtDNA) minisatellite marker and four paternally chloroplast (cpDNA) microsatellite markers were used assess range-wide...

• Premises of the study: Understanding influence recent glacial and postglacial periods on species' distributions is key for predicting effects future environmental changes. We investigated two physiographic landscapes population structure colonization white pine species contrasting habitats: P. monticola , which occurs in highly mountainous region western North America, strobus a much less area eastern America. Methods: To characterize patterns genetic diversity across ranges both species,...

Abstract Adaptive capacity, one of the three determinants vulnerability to climate change, is defined as capacity species persist in their current location by coping with novel environmental conditions through acclimation and/or evolution. Although studies have identified indicators adaptive few assessed this a quantitative way that comparable across tree species. Yet, such multispecies assessments are needed forest management and conservation programs refine guide choice adaptation...

Abstract Arctic and subarctic ecosystems are rapidly transforming due to global warming, emphasizing the need understand genetic diversity adaptive strategies of northern plant species for effective conservation. This study focuses on Betula glandulosa , a native North American tundra shrub known as dwarf birch, which demonstrates an apparent capacity adapt changing climate conditions. To address taxonomic challenges associated with birches logistical complexities sampling in northernmost...

Abstract Jack pine ( P inus banksiana ) and lodgepole contorta var. latifolia are two North American boreal hard pines that hybridize in their zone of contact western Canada. The main objective this study was to characterize patterns introgression resulting from past recent gene flow, using cytoplasmic markers having maternal or paternal inheritance. Mitochondrial DNA (mt chloroplast (cp diversity assessed allopatric populations each species stands the current containing morphological...

Summary Natural systems of hybridizing plants are powerful tools with which to assess evolutionary processes between parental species and their associated arthropods. Here we report on these in a trispecific hybrid swarm Populus trees. Using field observations, common garden experiments genetic markers, tested the hypothesis that similarities among hosts underlie distributions 10 gall‐forming arthropods ability adapt new host genotypes. Key findings: degree relatedness determines whether...

Biological material is at the forefront of research programs, as well application fields such breeding, aquaculture, and reforestation. While sophisticated techniques are used to produce this material, all too often, there no strict monitoring during "production" process ensure that specific varieties expected ones. Confidence rather than evidence often applied when time comes start a new experiment or deploy selected in field. During last decade, genomics has led development important...

Hybridization between species is known to greatly affect their genetic diversity and, therefore, evolution. Also, within species, there may be clusters which gene flow limited, impact natural selection. However, few studies have looked simultaneously at the influence of among-species and within-species flow. Here, we study hybridization Populus balsamifera trichocarpa on population structure adaptation in P. balsamifera. We did this by sampling a total 1517 individuals from across ranges...

The speed and magnitude of global change will have major impacts on riparian ecosystems, thereby leading to greater forest vulnerability. Assessing species' adaptive capacities provide relevant information for vulnerability assessments remains challenging, especially nonmodel species like the North American Populus deltoides W. Bartram ex Marshall. objective this study was understand how genomic diversity foundation shaped by its environment (climate, soil, biotic interactions) gauge...

Consumers, retailers, investors, and governments want quality products that are both safe obtained through legal sustainable practices. The solution put into place to meet those challenges requires the implementation of a traceability system. In context forestry, is ability inform about identity or provenance wood product. principle helps establish trust among various stakeholders throughout value chain. To this day, most systems based on paper permits, which easier falsify than genetic...

Abstract The characteristics of the frost regime (intensity, frequency, and timing) contribute to shaping tree species adaptations distribution as well ecosystem productivity functions. However, climate change increases variability in extreme events; therefore, different may diverge under change. Using BioSim 11 software, we simulated daily air temperature at 512 locations over northeastern North America between 1901–2021 determine how spatio-temporal trends varied this complex landscape if...

La phylogéographie est un champ de la biogéographie qui s’appuie sur les outils génétique afin mieux comprendre conséquences d’évènements anciens répartition diversité des espèces. Les aires actuelles 2 espèces pin dur, le gris ( Pinus banksiana Lamb.) et tordu contorta Dougl. ex. Loud.) étaient presque entièrement recouvertes par l’inlandsis au moment du maximum glaciaire, il y a 21 000 ans. Ces représentent donc d’excellents modèles pour étudier l’effet dernière glaciation compréhension...