Partitioning of soil phosphorus (P) pools has been proposed as a key mechanism maintaining plant diversity, but experimental support is lacking. Here, we provided different chemical forms of P to 15 tree species with contrasting root symbiotic relationships to investigate plant P acquisition in both tropical and subtropical forests. Both ectomycorrhizal (ECM) and arbuscular mycorrhizal (AM) trees responded positively to addition of inorganic P, but strikingly, ECM trees acquired more P from a complex organic form (phytic acid). Most ECM tree species and all AM tree species also showed some capacity to take up simple organic P (monophosphate). Mycorrhizal colonization was negatively correlated with soil extractable P concentration, suggesting that mycorrhizal fungi may regulate organic P acquisition among tree species. Our results support the hypothesis that ECM and AM plants partition soil P sources, which may play an ecologically important role in promoting species coexistence in tropical and subtropical forests.
|Date made available||15 Feb 2018|
|Date of data production||15 Feb 2018|
- Natural Environment Research Council (NERC)
Liu, X. (Creator), Burslem, D. F. R. P. (Creator), Taylor, J. D. (Creator), Taylor, A. F. S. (Creator), Khoo, E. (Creator), Majalap-Lee, N. (Creator), Helgason, T. (Creator), Johnson, D. (Creator)(15 Feb 2018). Partitioning of soil phosphorus among arbuscular and ectomycorrhizal trees in tropical and subtropical forests. Figshare.