Claim · model-written summary
Phenolic-rich root carbon inhibited Deschampsia growth relative to controls.
- Taxon
- D. caespitosae0
- Treatment
- phenolic‐rich root C additionse0
- Interactor
- G. rossii
Geum rossiie1othere0 - Outcome
- D. caespitosa growthe0
- Direction
- inhibitede0
- Comparator
- controlse0
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Both cellulose and phenolic‐rich root C additions inhibited D. caespitosa growth in field microcosms, relative to controls.”
e1“Using two species that co‐dominate alpine moist meadows as a model system (the phenolic‐rich forb Geum rossii , and the fast‐growing grass Deschampsia caespitosa ), we asked whether C from G. rossii fine roots could reduce D. caespitosa growth. We hypothesized that root C would indirectly reduce D. caespitosa growth by stimulating soil microbes, thus restricting plant N supplies. We predicted that this effect could be overcome by fertilization with N. We also hypothesized that G. rossii root phenolics could allelopathically inhibit D. caespitosa growth, and we predicted that direct, allelopathic inhibition would not be reversible with N additions.”
Title
Courtney L. Meier; Kaleb Keyserling; William D. Bowman Journal of Ecology 2009. doi:10.1111/j.1365-2745.2009.01537.x
Other claims from this paper (7)
- Intervention effect Cellulose root carbon inhibited Deschampsia growth relative to controls.
- Intervention effect Nitrogen addition reversed cellulose-mediated growth inhibition.
- Intervention effect Nitrogen addition did not reverse phenolic-rich carbon growth inhibition.
- Intervention effect Both carbon additions reduced soil nitrogen availability.
- Association Soil nitrogen availability was strongly negatively correlated with substrate-induced respiration.
- Mechanism Root carbon likely reduced growth through microbial restriction of plant nitrogen supply.
- Mechanism A nitrogen-independent mechanism possibly involving Geum phenolics inhibited Deschampsia roots.