Phosphorus speciation by 31P NMR spectroscopy in bracken (Pteridium aquilinum (L.) Kuhn) and bluebell (Hyacinthoides non-scripta (L.) Chouard ex Rothm.) dominated semi-natural upland soil

摘要: Abstract Access to P species is a driver for plant community composition based on nutrient acquisition. Here we investigated the distribution and accumulation of soil inorganic (Pi) organic (Po) forms in bracken bluebell dominated upland period between above ground dominance until biomass formed from half bluebells bracken. Chemical characterisation 31 Nuclear Magnetic Resonance spectroscopy was used determine species. Total concentration soils 0.87 g kg − 1 , while plants (above- below-ground parts) total ranged 0.84–4.0 g kg 0.14–2.0 g kg bracken, respectively. The speciation samples reflected surrounding soil. main detected NaOH-EDTA extracts were orthophosphate (20.0–31.5%), pyrophosphate (0.6–2.5%) polyphosphate (0.4–7.0%). Phytate ( myo -IP 6 ) most dominant form (23.6–40.0%). Other major peaks scyllo α- β- glycerophosphate (glyP). In ranging (21.7–80.4%) 68.5–81.1%, above-ground biomass, include α-glyP (4.5–14.4%) β-glyP (0.9–7.7%) bluebell, they only stripe blade ranges 2.5–5.5% 4.4–9.6%, Pyrophosphate, polyphosphate, phosphonates, found samples, not any parts. particular, high abundance phytate bulbs, may be related mechanism through which create recalcitrant phosphorus store key part their adaptation poor conditions.