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.

植物有许多方法来决定它们所经历的环境。这种“跟踪”环境的能力改变了生态和进化。这是因为它改变了个体的生存，并决定了环境如何对特征实施自然选择。植物可以通过根据环境调整发育的季节性时间来控制它们暴露在哪些环境中。具体地说，种子萌发的时间决定了植物一生中暴露在什么环境中。了解发芽时间等性状如何对变化的条件做出反应，对农业和保护生物学都很重要。这项研究使用不同能力的种群通过萌发提示来跟踪季节性环境，以量化环境跟踪调整对种群增长和适应的影响程度。通过这种方式，它将提供对环境变化对重要资源的影响的批判性理解。此外，该项目将通过培训从K-12到研究生院的各种不同的学生来产生社会影响。它还将为农业和保护生物学专业人员提供基本信息。众所周知，环境跟踪是使生物体在环境变化和范围扩大的条件下持续存在的关键过程。这项研究允许对这种理论进行明确的测试，并将阐明影响生物体在环境变化条件下持续和适应能力的基本过程。该项目使用具有相似遗传组成的复制的、遗传可变的种群来对比休眠和非休眠种群之间的种群持久性、生长、灭绝、适应速度和遗传组成的变化。休眠处理将在遗传上相同，除了控制种子休眠的主要遗传位点的差异，这允许季节性环境跟踪。此外，它还将识别与适应不同环境条件有关的特定性状和遗传基因座，并测试这些性状和基因座是否因种群先前通过萌发提示跟踪季节性环境条件的能力而有所不同。它将阐明物候环境跟踪本身是如何在不同的环境条件下演变的。因此，这项研究计划测试无处不在的过程，如环境提示和物候调节，如何改变整个基因组和整个生命周期的适应，以及它们如何改变种群的持久性和表现。这一奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

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