DISSERTATION RESEARCH: Friends in high places: Mycorrhizal associations in alpine communities

论文研究：高处之友：高山群落中的菌根协会

基本信息

批准号：
0808000
负责人：
Candace Galen
金额：
$ 1.2万
依托单位：
University of Missouri-Columbia
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：
2008-05-15 至 2010-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0808000&HistoricalAwards=false
关键词：
DISSERTATION RESEARCH Friends places Mycorrhizal

项目摘要

Mutualisms, interactions between species in which both partners benefit, are found in all ecosystems. However, mutualisms vary in strength and persistence over space and time. This variation raises the question of why mutualisms persist or vanish under different conditions. This investigator focuses on plant-fungus interactions, or mycorrhizal associations, as a model of mutualism. The overall goal of her research is to address the question of where and why mutualisms occur, by investigating factors that influence the costs and benefits of plant-fungus partnerships. Through field, greenhouse, and laboratory projects this research aims to 1) describe patterns in the distribution and abundance of mycorrhizal associations; 2) quantify the physiological costs and benefits of supporting mycorrhizal fungi; 3) identify environmental factors that influence the costs and benefits of these partnerships; and 4) evaluate population- or community-level consequences of variation in mycorrhizal status. Plant-fungus interactions may have important consequences for plant communities through their effects on plant responses to environmental stress and processes such as invasions by exotic species. Consequently, this research will inform restoration and conservation efforts in native plant communities. Through her research, this graduate student will also facilitate undergraduate involvement in science by providing opportunities for minority students to participate in ecological projects.

互利共生，即物种之间的相互作用，双方都受益，在所有生态系统中都存在。然而，互利共生的强度和持久性随空间和时间的不同而变化。这种差异提出了一个问题：为什么互利共生在不同条件下持续存在或消失。该研究人员重点研究植物与真菌的相互作用或菌根关联，作为互利共生的模型。她研究的总体目标是通过调查影响植物-真菌伙伴关系成本和收益的因素来解决互利共生发生的地点和原因的问题。通过实地、温室和实验室项目，本研究旨在 1) 描述菌根关联的分布和丰度模式； 2）量化支持菌根真菌的生理成本和效益； 3）确定影响这些伙伴关系成本和收益的环境因素； 4) 评估菌根状态变化对群体或社区水平的影响。植物-真菌相互作用可能通过影响植物对环境胁迫和外来物种入侵等过程的反应，对植物群落产生重要影响。因此，这项研究将为本土植物群落的恢复和保护工作提供信息。通过她的研究，这位研究生还将通过为少数民族学生提供参与生态项目的机会来促进本科生对科学的参与。