NSF PRFB FY 2023: Impact of Environment-Seagrass-Microbe Interactions on Seagrass Stress Response and Ecosystem Functions

NSF PRFB 2023 财年：环境-海草-微生物相互作用对海草应激反应和生态系统功能的影响

• 批准号: 2305691
• 负责人: Jamila Roth
• 金额: $ 24万
• 依托单位: Roth, Jamila
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2024
• 资助国家: 美国
• 起止时间: 2024-03-01 至 2027-02-28
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2305691&HistoricalAwards=false
• 关键词: NSF; PRFB; FY; 2023; Impact

This action funds an NSF Postdoctoral Research Fellowship in Biology for FY 2023, Integrative Research Investigating the Rules of Life Governing Interactions Between Genomes, Environment, and Phenotypes. The fellowship supports research and training of the fellow that will contribute to the area of Rules of Life in innovative ways. Beneficial bacteria can reduce the impact of stressful conditions on plants. Seagrasses are marine plants that grow in stressful environments. One common stressor is high sulfide concentrations. Sulfide is a toxic chemical that is abundant in marine sediments and can cause seagrass die-offs. The bacteria, Candidatus Thiodiazotropha, can detoxify seagrass sediments by oxidizing sulfide, which is a process that removes sulfide from the environment. This research will determine how the presence and abundance of Ca. Thiodiazotropha impacts seagrass health under various levels of environmental stress. Seagrass meadows are an economically and culturally valuable resource, and positive interactions between seagrasses and bacteria provide a potential tool for evaluating seagrass vulnerability to stressors and increasing stress tolerance of restored seagrasses. This research will integrate environment-seagrass-microbe interactions to better understand the generality and magnitude of plant-microbe interactions under varying environmental conditions. The fellow will analyze (a) the relative impacts of plant traits vs. environmental conditions on Ca. Thiodiazotropha abundance using a reciprocal transplant experiment, (b) how interactions between sulfide stress and Ca. Thiodiazotropha affect seagrass performance using a mesocosm experiment, and (c) how seagrass-microbe interactions translate environmental heterogeneity to higher-order variation in plant performance and nutrient cycling using an incubation experiment. Results from this research will advance fundamental knowledge related to the evolutionary ecology of plant microbiomes, drivers of nitrogen cycling in coastal ecosystems, and the impact of environment-plant-microbe interactions on ecosystem functions and processes. The fellow will receive training in microbial ecology and biogeochemistry techniques, inclusive pedagogical strategies, and science communication. This project will promote the training of students, including students from groups underrepresented in the sciences, through the development and implementation of high school science curriculum and mentorship of undergraduate students.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.

该行动为2023财年生物学的NSF博士后研究奖学金提供了资金，该研究综合研究调查了有关基因组，环境和表型之间相互作用的生活规则。奖学金支持对研究员的研究和培训，这些研究和培训将以创新的方式为生活规则做出贡献。有益细菌可以减少压力条件对植物的影响。海草是在压力环境中生长的海洋植物。一种常见的压力是高硫化物浓度。硫化物是一种有毒化学物质，在海洋沉积物中含量丰富，可能导致海草死亡。细菌，Candidatus硫二氮杂志，可以通过氧化硫化物来排毒海草沉积物，这是从环境中去除硫化物的过程。这项研究将确定CA的存在和丰度。硫二唑营养在各种环境压力下影响海草健康。海草草地是一种经济和文化上有价值的资源，海草和细菌之间的积极相互作用为评估海草脆弱性的潜在工具，并提高了恢复的海草的压力耐受性。这项研究将整合环境 - 微生物相互作用，以更好地了解在不同环境条件下植物 - 微生物相互作用的一般性和幅度。研究员将分析（a）植物特征与环境条件对CA的相对影响。硫二氮杂芽孢杆菌的丰度使用相互移植实验，（b）硫化物应激与ca之间的相互作用如何。硫二唑营养通过中验实验影响海草性能，（c）海草 - 微生物相互作用如何将环境异质性转化为植物性能和养分循环的高阶变化，并使用孵化实验。这项研究的结果将促进与植物微生物组的进化生态有关的基本知识，沿海生态系统中氮循环的驱动因素以及环境植物 - 微生物相互作用对生态系统功能和过程的影响。该研究员将接受微生物生态学和生物地球化学技术，包容性教学策略和科学传播方面的培训。该项目将通过开发和实施高中科学课程和本科生的指导来促进学生的培训，包括来自科学中代表性不足的学生的培训。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的智力和更广泛影响的评估来通过评估来获得支持的。