Selective adsorption and precipitation of pyrophosphate from water-soluble ammonium polyphosphate by calcite

Ji, Lingmei; Zhang, Wenjun; Xie, Wenji; Yuan, Taiyan; Wei, Qing; Xu, Dehua; Zhang, Zhiye; Yan, Zhengjuan; Wang, Xinlong

doi:10.1016/j.jece.2022.108893

Cited by 2 publications

(1 citation statement)

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“…Rhizosphere of maize under MB and NB exhibited a signi cant decrease in poly-P. While soybeans under MB showed better crop growth and higher P availability possibly attributed to PolyP, due to its lower susceptibility to xation(Ji et al 2022). Microorganisms regulate the release of various phosphatases and store medium-stable P. The apoptosis of microorganism releases phosphomonoesters (including non-phytate and phytate monoesters), comprising 10 and 30% of Po in different microbes(Bünemann et al 2008;Magid et al 1996).…”

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confidence: 96%

Soil Legacy Phosphorus Transformation in Long-term Fertilized Phaeozems Soil under Maize/Soybean Intercropping

Li,

Zhao,

Chen

et al. 2024

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Root exudate could improve crop productivity and phosphorus (P) acquisition in maize/soybean intercrops. However, the synergistic effects between intercropped plants, the regulation of soil phosphatase activity, and P transformation corresponding to it remain elusive. Three kinds of root separation treatments, solid barrier (SB), mesh barrier (MB), and no barrier (NB), using pot experiment, were conducted to quantify the effects of plants, rhizosphere exudates exchange and the complete root interaction. Sequential extraction and 31P-NMR spectroscopic analysis methods complement each other, which can better explain the combination forms of P elements. This work suggests that maize under NB stimulated a decrease in NH4F-inorganic P (Pi, 7.91%) and occluded Pi (7.46%) compared to those under SB. In the presence of maize signaling chemicals (MB treatment), the percentage of mononucleotides was enriched, while neo-inositol hexakisphosphate, β-glycerophosphate, and phosphocholine declined in the soybean rhizosphere compared to SB. Under both two plants, phosphodiesterase (PDE) activity was negatively correlated with pyrophosphate. The activity of alkaline phosphatase (ALP) was the highest in the MB treatment of maize and soybean, which increased from 33.80 to 44.5 and 41.92 (ug g− 1 h− 1) compared with bulk soil. Maize under monocropping mainly mobilizes acid phosphatase (ACP), but it is converted to ALP and PDE when intercropping with soybean. Knowledge of P species in P-rich soils helps assess P potential transfer and provides new evidence for the value of cereal-legume intercrops in reducing fertilizer input.

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confidence: 96%