气候变化领域集成服务门户(CCPortal): A cryptic syngameon within Betula shrubs revealed: Implications for conservation in changing subarctic environments

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DOI	10.1111/eva.13689
	A cryptic syngameon within Betula shrubs revealed: Implications for conservation in changing subarctic environments
	Touchette, Lyne; Godbout, Julie; Lamothe, Manuel; Porth, Ilga; Isabel, Nathalie
发表日期	2024
ISSN	1752-4571
起始页码	17
结束页码	4
卷号	17 期号:4
英文摘要	Arctic and subarctic ecosystems are rapidly transforming due to global warming, emphasizing the need to understand the genetic diversity and 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 to adapt to changing climate conditions. To address the taxonomic challenges associated with shrub birches and logistical complexities of sampling in the northernmost areas where species' ranges overlap, we adopted a multicriteria approach. Incorporating molecular data, ploidy level assessment and leaf morphology, we aimed to distinguish B. glandulosa individuals from other shrub birch species sampled. Our results revealed three distinct species and their hybrids within the 537 collected samples, suggesting the existence of a shrub birch syngameon, a reproductive network of interconnected species. Additionally, we identified two discrete genetic clusters within the core species, B. glandulosa, that likely correspond to two different glacial lineages. A comparison between the nuclear and chloroplast SNP data emphasizes a long history of gene exchange between different birch species and genetic clusters. Furthermore, our results highlight the significance of incorporating interfertile congeneric species in conservation strategies and underscores the need for a holistic approach to conservation in the context of climate change, considering the complex dynamics of species interactions. While further research will be needed to describe this shrub birches syngameon and its constituents, this study is a first step in recognizing its existence and disseminating awareness among ecologists and conservation practitioners. This biological phenomenon, which offers evolutionary flexibility and resilience beyond what its constituent species can achieve individually, may have significant ecological implications.
英文关键词	Betula spp.; biogeography; genetic diversity; hybridization; ploidy; shrub; SNPs; syngameon
语种	英语
WOS研究方向	Evolutionary Biology
WOS类目	Evolutionary Biology
WOS记录号	WOS:001203650100001
来源期刊	EVOLUTIONARY APPLICATIONS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/290236
作者单位	Laval University; Natural Resources Canada; Canadian Forest Service; Laval University
推荐引用方式 GB/T 7714	Touchette, Lyne,Godbout, Julie,Lamothe, Manuel,et al. A cryptic syngameon within Betula shrubs revealed: Implications for conservation in changing subarctic environments[J],2024,17(4).
APA	Touchette, Lyne,Godbout, Julie,Lamothe, Manuel,Porth, Ilga,&Isabel, Nathalie.(2024).A cryptic syngameon within Betula shrubs revealed: Implications for conservation in changing subarctic environments.EVOLUTIONARY APPLICATIONS,17(4).
MLA	Touchette, Lyne,et al."A cryptic syngameon within Betula shrubs revealed: Implications for conservation in changing subarctic environments".EVOLUTIONARY APPLICATIONS 17.4(2024).