BEE: Demographic and evolutionary consequences of phenological tracking

BEE：物候追踪的人口统计和进化后果

• 批准号: 2118654
• 负责人: Kathleen Donohue
• 金额: $ 82.52万
• 依托单位: Duke University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-08-15 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2118654&HistoricalAwards=false
• 关键词: BEE; Demographic; evolutionary; consequences; phenological

Plants have many ways of determining the environment they experience. This ability to “track” environments alters ecology and evolution. This is because it changes the survival of individuals and determines how the environment exerts natural selection on traits. Plants can control which environments they are exposed to by adjusting the seasonal timing of development in response to the environment. Specifically, the timing of seed germination determines what a plant is exposed to throughout its life. Understanding how traits like germination timing will respond to changing conditions is important for both agriculture and conservation biology. This research uses populations that differ in their ability to track seasonal environments via germination cuing, to quantify the degree to which environmental tracking adjustment influence population growth and adaptation. In this way it will provide critical understanding of the influence of a changing environment on important resources. The project will, furthermore, provide societal impacts by training a diverse set of students from k-12 through graduate school. It will also provide fundamental information to professionals in agriculture and conservation biology. Environmental tracking is known to be a crucial process that allows organisms to persist under conditions of environmental change and range expansion. This research allows explicit tests of such theory and will elucidate fundamental processes that influence the ability of organisms to persist and adapt under conditions of environmental change. This project uses replicated, genetically variable, populations of similar genetic composition to contrast population persistence, growth, extinction, rates of adaptation, and changes in genetic composition between dormant and non-dormant populations. The dormancy treatments will be genetically identical with the exception of differences in major genetic loci that control seed dormancy, which allows seasonal environmental tracking. In addition, it will identify specific traits and genetic loci associated with adaptation to contrasting environmental conditions, and to test whether those traits and loci differ depending on the population’s previous ability to track seasonal environmental conditions via germination cuing. It will elucidate how phenological environmental tracking itself evolves under diverse environmental conditions. This research program therefore tests how ubiquitous processes such as environmental cuing and phenological regulation can alter adaptation across the genome and across the lifecycle, and how they alter population persistence and performance.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

植物有许多确定其经历的环境的方法。这种“跟踪”环境的能力改变了生态学和进化。这是因为它改变了个人的生存，并决定了环境如何在特征上进行自然选择。植物可以通过调整对环境的季节性开发时机来控制其暴露于哪些环境。具体而言，种子发芽的时机决定了植物在整个生命中的暴露。了解诸如发芽时机之类的特征将对不断变化的条件做出响应，这对于同意和保护生物学都很重要。这项研究使用了他们通过发芽提示跟踪季节性环境的能力有所不同的人群，以量化环境跟踪调整影响人群的增长和适应程度。通过这种方式，它将对不断变化的环境对重要资源的影响进行批判理解。此外，该项目将通过培训来自K-12到研究生院的潜水员的学生一组来提供社会影响。它还将为同意和保护生物学的专业人员提供基本信息。众所周知，环境跟踪是一个至关重要的过程，可以使生物在环境变化和范围扩展的条件下持续存在。这项研究允许对这种理论进行明确的检验，并将阐明影响生物在环境变化条件下持续和适应能力的基本过程。该项目使用复制的，遗传上的变化，类似遗传组成的种群，与对比种群持久性，增长，扩展，适应率以及休眠和非舒适群体之间遗传组成的变化。休眠治疗将在遗传上相同，除了控制种子休眠状态的主要遗传基因座的差异，这允许季节性的环境跟踪。此外，它将确定与适应对比对比环境条件相关的特定性状和遗传局部，并根据人群以前通过发芽提示跟踪季节性环境条件的能力来测试这些特征和当地的特征是否不同。它将阐明物候环境在大型环境条件下如何演变自身。因此，该研究计划测试了无处不在的过程，例如环境提示和物候调节，可以改变整个基因组和整个生命周期的适应性，以及它们如何改变人口持久性和绩效。该奖项反映了NSF的法定任务，并通过使用基金会的知识分子和更广泛的影响来评估NSF的法定任务，并被视为珍贵的支持。

项目成果

Changes in phenology can alter patterns of natural selection: the joint evolution of germination time and postgermination traits

• DOI: 10.1111/nph.18711
• 发表时间: 2023-01-22
• 期刊: NEW PHYTOLOGIST
• 影响因子: 9.4
• 作者: D'Aguillo, Michelle;Donohue, Kathleen
• 通讯作者: Donohue, Kathleen

Genetic Consequences of Biologically Altered Environments

生物环境改变的遗传后果

• DOI: 10.1093/jhered/esab047
• 发表时间: 2021
• 期刊: Journal of Heredity
• 影响因子: 3.1
• 作者: D’Aguillo, Michelle;Hazelwood, Caleb;Quarles, Brandie;Donohue, Kathleen
• 通讯作者: Donohue, Kathleen