TY - JOUR
T1 - Multiple phosphorus acquisition strategies adopted by fine roots in low-fertility soils in Central Amazonia
AU - Figueiredo Lugli, Laynara
AU - Anderson, Kelly M.
AU - Aragao, Luiz E. O. C.
AU - Cordeiro, Amanda L.
AU - Cunha, Hellen F. V.
AU - Fuchslueger, Lucia
AU - Meir, Patrick
AU - Mercado, Lina M.
AU - Obitas, Erick
AU - Quesada, Carlos Alberto Nobre
AU - Rosa, Jessica S.
AU - Schaap, Karst J.
AU - Valverde-Barrantes , Oscar
AU - Hartley, Iain P.
PY - 2019/2/22
Y1 - 2019/2/22
N2 - Ancient Amazon soils are characterised by low concentrations of soil phosphorus (P). Therefore, it is hypothesised that plants may invest a substantial proportion of their resources belowground to adjust their P-uptake strategies, including root morphological, physiological (phosphatase enzyme activities) and biotic (arbuscular mycorrhizal (AM) associations) adaptations. Since these strategies are energy demanding, we hypothesise that trade-offs between morphological traits and root phosphatase exudation and symbiotic associations would occur. Specifically, we expected that plants which invest in finer roots, and therefore have greater ability to explore large soil volumes, would have a high investment in physiological adaptations such as enhanced phosphatase production. In contrast, we expected that plants with predominantly thicker roots would invest more in symbiotic associations, in which carbon is traded for P acquired from AM fungal communities.
AB - Ancient Amazon soils are characterised by low concentrations of soil phosphorus (P). Therefore, it is hypothesised that plants may invest a substantial proportion of their resources belowground to adjust their P-uptake strategies, including root morphological, physiological (phosphatase enzyme activities) and biotic (arbuscular mycorrhizal (AM) associations) adaptations. Since these strategies are energy demanding, we hypothesise that trade-offs between morphological traits and root phosphatase exudation and symbiotic associations would occur. Specifically, we expected that plants which invest in finer roots, and therefore have greater ability to explore large soil volumes, would have a high investment in physiological adaptations such as enhanced phosphatase production. In contrast, we expected that plants with predominantly thicker roots would invest more in symbiotic associations, in which carbon is traded for P acquired from AM fungal communities.
U2 - 10.1007/s11104-019-03963-9
DO - 10.1007/s11104-019-03963-9
M3 - Article
SN - 0032-079X
JO - Plant and Soil
JF - Plant and Soil
ER -