Dimensions: Collaborative Research: Symbiont and Transcriptomic Niche Dimensions of Long-term Coexistence in Trifolium Communities

维度：合作研究：三叶草群落长期共存的共生体和转录组生态位维度

• 批准号: 1823419
• 负责人: Maren Friesen
• 金额: $ 53.91万
• 依托单位: Washington State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-08-16 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1823419&HistoricalAwards=false
• 关键词: Dimensions; Collaborative; Research; Symbiont; Transcriptomic

Understanding how species coexist, and the role of genetic diversity within and between species, remains a fundamental challenge in biodiversity research. This project focuses on highly diverse communities of clover plants and their bacterial nitrogen-fixing symbionts, rhizobia. Integrating observational approaches, manipulative field, greenhouse, and growth chamber experiments, genomic techniques and phylogenetic analyses, this project will test the importance of rhizobial symbionts and soil feedbacks in coexistence. Gene expression and functional traits will serve as proxies for the ecological niche; this project will determine how these evolve using phylogenetic trees that capture the evolutionary history of species. This project will yield an integrated insight into the molecular, functional, and ecological mechanisms of diversity maintenance and will greatly increase our understanding of biological nitrogen fixation, a critical function of legumes and rhizobia in natural and agricultural ecosystems.Symbiotic nitrogen fixation has global importance on par with photosynthesis, and this project will assess its functionality in light of genetic variation in symbionts and clover species. This project will train two post-docs and two graduate students and will provide research experiences to undergraduate students through the Plant Genomics at MSU program, and through an exchange program with Howard University at UC Davis. The project will train students in the High School Honors Science Program at MSU and in the Ecological Society of America?s SEEDS program (Strategies for Ecology Education, Diversity and Sustainability: Diverse People for a Diverse Science).

了解物种如何并存以及物种之间和物种之间的遗传多样性的作用仍然是生物多样性研究中的基本挑战。该项目着重于三叶草植物的高度多样化的社区及其细菌固氮共生体，根瘤菌。整合观察方法，操纵场，温室和生长室实验，基因组技术和系统发育分析，该项目将测试根瘤菌共生体和土壤反馈共存的重要性。基因表达和功能性状将充当生态位的代理。该项目将使用捕获物种进化史的系统发育树确定这些项目如何进化。该项目将对维持多样性的分子，功能和生态机制产生综合见解，并将大大增加我们对生物氮固定的理解，豆类的关键功能和自然和农业生态系统中的根瘤菌的关键功能以及固定的自然和农业生态系统的整体重要性，该项目在其上的变化和统一的统一功能，并将其置于光合性的范围内。 物种。该项目将通过MSU计划的植物基因组学和与UC Davis的Howard University的交流计划一起培训两名研究生和两名研究生，并通过植物基因组学的植物基因组学为本科生提供研究经验。该项目将在MSU的高中荣誉科学计划和美国生态学会的种子计划（生态教育，多样性和可持续性的战略：多元化科学的多元化人物）中培训学生。