期刊
ECOSPHERE
卷 10, 期 3, 页码 -出版社
WILEY
DOI: 10.1002/ecs2.2640
关键词
arbuscular mycorrhizal fungi; dark septate endophytes; Festuca thurberi; fungal colonization; Helianthella quinquenervis; plant-plant interactions; plant-soil interaction
类别
资金
- Department of Ecology and Evolutionary Biology, University of Tennessee
- RMBL Dr Jean Langenheim Fellowship
- RMBL Dr Lee R. G. Snyder Memorial Fellowship
- RMBL Fran Hunter Fellowship
- U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research, Terrestrial Ecosystem Sciences Program [DE-SC0010562]
- U.S. Department of Energy (DOE) [DE-SC0010562] Funding Source: U.S. Department of Energy (DOE)
Global change drivers, such as nitrogen (N) deposition and non-random species extinctions, may shift interactions among aboveground and belowground communities. However, tightly coupled interactions between aboveground and belowground organisms may buffer ecosystems to global change. Here, we test how four years of organic and inorganic N addition and removal of a dominant plant species, Festuca thurberi, independently and interactively influences fungal colonization patterns and performance in a co-dominant plant species, Helianthella quinquenervis. Surprisingly, we found N addition and Festuca removal had no measurable effects on the colonization of arbuscular mycorrhizal fungi (AMF) and dark septate endophyte (DSE) or the performance of Helianthella seedlings grown with field-collected inoculum in a companion greenhouse experiment. However, the proximity of Helianthella to Festuca predicted fungal colonization: DSE colonization decreased by 1% for each cm of distance I lelianthella was from Festuca, although the differences in fungal inoculum potential had no effect on Helianthella seedling survival or biomass. Our results suggest that plant-fungal interactions can be resistant to N addition and resilient to the loss of dominant plant species. Additionally, our results suggest that soil legacies, mediated through surviving symbiont communities or changes in soil properties, can shape ecosystem resistance and resilience to disturbance and perturbations.
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