Are there Evolutionary Consequences of Genetic-based Feedbacks between Plants and Soils?

植物和土壤之间基于遗传的反馈是否存在进化后果？

• 批准号: 0743437
• 负责人: Jennifer Schweitzer
• 金额: --
• 依托单位: University of Tennessee Knoxville
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-03-15 至 2011-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0743437&HistoricalAwards=false
• 关键词: there; Evolutionary; Consequences; Genetic; based

Ecosystems provide many services to humans, including maintaining soil integrity and fertility. An important question for scientists regarding the services that ecosystems provide is "do species matter" to these services? The increasing availability of DNA technologies has allowed researchers to determine not only if species matter but also if individuals within species also differentially influence their environment? By utilizing three 16-year old experimental gardens of cottonwood trees planted in 3 different environments, this research will determine whether cloned copies of cottonwood individuals (genotypes) can predictably influence soil fertility in unique ways. By addressing this question across three different environments that vary in temperature and precipitation, the strength of the feedback between individual trees and their soils can be determined. In addition, the research will provide information on how the relationships could be modified by climate change. It is expected that unique leaf and root traits of individual clones will predictably impact soil fertility, regardless of environment, although the magnitude of these effects will likely differ as climatic conditions change.Understanding the genetic basis of interactions between plants and soils is important for at least two reasons: 1) By providing a better understanding of the effects of genetic variation in forest species on ecosystem services, it will lead to improved management and conservation strategies under the current climate and future climate scenarios; 2) Documenting the consequences of plant genetics on soils may provide insight on the extended effects of genetically modified plants. Graduate and undergraduate students will be trained in the course of this research and the results disseminated to both the scientific community and the public via publications, talks and a public website.

生态系统为人类提供许多服务，包括维持土壤完整性和生育能力。对于科学家来说，关于生态系统提供的服务的一个重要问题是“物种对这些服务都很重要？ DNA技术的可用性越来越多使研究人员不仅确定物种是否重要，还可以确定物种中的个人是否也会影响其环境？ 通过利用在3种不同环境中种植的三个16岁的杨木树木的实验花园，这项研究将确定杨木个体的克隆副本（基因型）是否可以以独特的方式影响土壤的生育能力。 通过在温度和降水量各不相同的三种不同环境中解决这个问题，可以确定单个树木与土壤之间的反馈的强度。 此外，该研究将提供有关如何通过气候变化来修改关系的信息。 可以预期，单个克隆的独特叶子和根特性可以预见，无论环境如何，这些影响的大小可能会随着气候条件的变化而有所不同。理解植物与土壤之间相互作用的遗传基础至少有两个原因，至少有两个原因：1）通过对林体策略的策略进行更好的理解，并通过对森林策略的影响更好地了解森林的遗传差异，它可以改善森林的策略，它可以改善森林的影响。场景； 2）记录植物遗传学对土壤的后果可能会洞悉转基因植物的扩展影响。 研究生和本科生将在这项研究的过程中接受培训，并通过出版物，会谈和公共网站培训科学界和公众的结果。