Phylogeography and adaptation to environmental gradients in sugar maple

糖枫的系统发育地理学和对环境梯度的适应

• 批准号: RGPIN-2017-04332
• 负责人: SurgetGroba, Yann
• 金额: $ 1.75万
• 依托单位: Québec en Outaouais
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=765470
• 关键词: Phylogeography; adaptation; environmental; gradients; sugar; Phylogeography; adaptation; environmental; gradients; sugar

The fast changing climatic conditions due to current global change pose a serious threat to the planet's biodiversity and to the ecosystem services it provides. In case of abrupt climate change as currently observed, species need either to adapt to their new conditions, or migrate into favorable habitats. Here I propose a comprehensive study to investigate the genomic adaptations driven by environmental factors in sugar maples, a species complex with a wide distribution in eastern North-America.Since several historical demographic processes can mimic natural selection patterns and complexify the detection of adaptive genetic variation, we will first investigate the phylogenetic relationships among various maple species, and conduct a comparative phylogeographic study of the black and sugar maples, two species or ecotypes with a widely overlapping distribution and known to hybridize naturally. Finally, based on the results of these preliminary studies, we will use a landscape genomics approach to relate environmental and genetic variation across the distribution range of the sugar maple, and to understand its adaptive genetic variation and its response to global climate change.It will be the first large scale study to investigate the genomic adaptations driven by climate in sugar maple, a dominant tree of temperate broad-leaf deciduous forests of north-eastern America with an important socio-economic value in eastern Canada. Understanding the capacity of maples to adapt to changing climatic condition is thus critical to guide the choice of seeds for reforestation and maximize the adaptive potential and resilience of maple forests in the face of global warming. Finally, this research project will contribute to the training of numerous highly qualified personnels to the state of the art methodologies in genomics. This is critical for the development of Canada's leading position in the fields of Biological, Environmental and Medical Sciences, including biotechnology and pharmaceutical industry.

由于当前的全球变化而引起的快速变化的气候状况对地球的生物多样性和所提供的生态系统服务构成了严重威胁。如果目前观察到的气候变化发生突然变化，物种需要适应其新条件，或者迁移到有利的栖息地中。 Here I propose a comprehensive study to investigate the genomic adaptations driven by environmental factors in sugar maples, a species complex with a wide distribution in eastern North-America.Since several historical demographic processes can mimic natural selection patterns and complexify the detection of adaptive genetic variation, we will first investigate the phylogenetic relationships among various maple species, and conduct a comparative phylogeographic study of the black and sugar maples, two species or ecotypes with广泛重叠的分布，并自然地杂交。 Finally, based on the results of these preliminary studies, we will use a landscape genomics approach to relate environmental and genetic variation across the distribution range of the sugar maple, and to understand its adaptive genetic variation and its response to global climate change.It will be the first large scale study to investigate the genomic adaptations driven by climate in sugar maple, a dominant tree of temperate broad-leaf deciduous forests of north-eastern America with an important加拿大东部的社会经济价值。因此，了解枫树适应气候变化的能力对于指导种子的选择以进行造林和最大化枫树森林的适应性和弹性至关重要，这至关重要。最后，该研究项目将有助于培训众多高素质的人类基因组学中艺术方法的培训。这对于发展加拿大在生物技术和医学科学领域（包括生物技术和制药行业）领域的领先地位至关重要。