31P-NMR Metabolomics Revealed Species-Specific Use of Phosphorous in Trees of a French Guiana Rainforest.
Molecules
; 25(17)2020 Aug 31.
Article
en En
| MEDLINE
| ID: mdl-32877991
ABSTRACT
Productivity of tropical lowland moist forests is often limited by availability and functional allocation of phosphorus (P) that drives competition among tree species and becomes a key factor in determining forestall community diversity. We used non-target 31P-NMR metabolic profiling to study the foliar P-metabolism of trees of a French Guiana rainforest. The objective was to test the hypotheses that P-use is species-specific, and that species diversity relates to species P-use and concentrations of P-containing compounds, including inorganic phosphates, orthophosphate monoesters and diesters, phosphonates and organic polyphosphates. We found that tree species explained the 59% of variance in 31P-NMR metabolite profiling of leaves. A principal component analysis showed that tree species were separated along PC 1 and PC 2 of detected P-containing compounds, which represented a continuum going from high concentrations of metabolites related to non-active P and P-storage, low total P concentrations and high NP ratios, to high concentrations of P-containing metabolites related to energy and anabolic metabolism, high total P concentrations and low NP ratios. These results highlight the species-specific use of P and the existence of species-specific P-use niches that are driven by the distinct species-specific position in a continuum in the P-allocation from P-storage compounds to P-containing molecules related to energy and anabolic metabolism.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Fósforo
/
Árboles
/
Metaboloma
/
Metabolómica
/
Bosque Lluvioso
País como asunto:
America do sul
/
Caribe ingles
/
Guyana
/
Guyana francesa
Idioma:
En
Año:
2020
Tipo del documento:
Article