【丛枝菌根真菌与氮对植物生长的影响】César Terrer1* Sara Vicca2 Bruce A. Hungate34 Richard P. Phillips5 I. Colin Prentice16. Mycorrhizal association as a primary control of the CO2 fertilization effect. Science 2016 Vol. 353 Issue 6294 pp. 72-74
Abstract
Plants buffer increasing atmospheric carbon dioxide (CO2) concentrations through enhanced growth but the question whether nitrogen availability constrains the magnitude of this ecosystem service remains unresolved. Synthesizing experiments from around the world we show that CO2 fertilization is best explained by a simple interaction between nitrogen availability and mycorrhizal association. Plant species that associate with ectomycorrhizal fungi show a strong biomass increase (30 ± 3% P < 0.001) in response to elevated CO2 regardless of nitrogen availability whereas low nitrogen availability limits CO2 fertilization (0 ± 5% P = 0.946) in plants that associate with arbuscular mycorrhizal fungi. The incorporation of mycorrhizae in global carbon cycle models is feasible and crucial if we are to accurately project ecosystem responses and feedbacks to climate change.
【测量阿拉斯加的碳循环】Nicholas C. Parazooab1 Roisin Commanecd Steven C. Wofsyc
