Partitioning of soil phosphorus among arbuscular and ectomycorrhizal trees in tropical and subtropical forests
Xubing Liu
David F. R. P. Burslem
Joe D. Taylor
Andy F. S. Taylor
Eyen Khoo
Noreen Majalap-Lee
Thorunn Helgason
David Johnson
10.6084/m9.figshare.5890573.v1
https://figshare.com/articles/dataset/Partitioning_of_soil_phosphorus_among_arbuscular_and_ectomycorrhizal_trees_in_tropical_and_subtropical_forests/5890573
<a></a><a>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). </a><a></a><a>Mycorrhizal
colonization</a> 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.
2018-02-15 00:59:56
Mycorrhizal fungi
phosphate
seedling growth
soil organic phosphorus
resource partitioning
tropical and subtropical forests
Ecology