Research Advance in polyphosphate-accumulating microorganisms in enhanced biological phosphorus removal process Myo-inositol Polyphosphate Metabolism and Signaling in Arabidopsis Accumulation of Phosphorus and Mineralizational Significance of Algal Cells Synergistic Effects of Expandable Graphite with Ammonium Polyphosphate on Flame Retardancy of Wood Flour/Polypropylene Composites Synergistic Fire Retarding Study of Guanylurea Phosphate and Ammonium Polyphosphate Treated Wood Flour/HDPE Composite Dual localization of arbuscular mycorrhizal structures and polyphosphate accumulation in soybean roots