The Role of Mycorrhizae in Mediating Interactions in Native and Invaded Plant Communities in Intermountain Praire

菌根在调节山间草原本地和入侵植物群落相互作用中的作用

• 批准号: 9726829
• 负责人: Ragan Callaway
• 金额: $ 22.14万
• 依托单位: University of Montana
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-03-15 至 2004-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9726829&HistoricalAwards=false
• 关键词: Role; Mycorrhizae; Mediating; Interactions; Native

9726829 Callaway and Zabinski The highly aggressive invasive weed, Centaurea maculosa, appears to utilize an unusual mechanism to exclude a native bunchgrass in grasslands of the Intermountain prairie. The basis of this interaction is tied to underground interactions via mycorrhizal fungi. This project will evaluate the role of these fungi in acting as mediators of the establishment of Centaurea by preferentially transferring carbon from native grasses to this weed. The proposed research includes an integrated sequence of greenhouse, common garden, and field experiments to (1) test the generality of indirect interactions between mycorrhizal fungi and plant species native to the Intermountain grasslands in the presence and absence of the invasive species, (2) to determine the mechanism of the fungi-mediated interaction and (3) to determine the ecological relevance of such interactions in the field.

卡拉威和扎宾斯基极具侵略性的入侵杂草，半人马，似乎利用一种不寻常的机制来排除山间草原草原上的本地束草。这种相互作用的基础与地下通过菌根真菌的相互作用有关。本项目将评估这些真菌在半人马草的建立中作为媒介的作用，通过优先将碳从原生草转移到这种杂草。本研究包括温室、普通花园和田间实验的综合序列，以：(1)测试在入侵物种存在和不存在的情况下，菌根真菌与山间草原原生植物之间间接相互作用的普遍性；(2)确定真菌介导的相互作用机制；(3)确定这种相互作用在田间的生态相关性。