期刊
SOIL BIOLOGY & BIOCHEMISTRY
卷 37, 期 11, 页码 2155-2158出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.soilbio.2005.03.005
关键词
pasture soil; inositol phosphate; myo-inositol hexakisphosphate scyllo-inositol hexakisphosphate; phytic acid; solution P-31 NMR spectroscopy
类别
The recent identification of scyllo-inositol hexakisphosphate in alkaline soil extracts by solution P-31 NMR spectroscopy allowed us to investigate this compound in soils by re-analyzing spectra from two previously published studies. Concentrations of scyllo-inositol hexakisphosphate in 29 temperate pasture soils from England and Wales ranged between 11 and 130 mg P kg(-1) soil and accounted for between 4 and 15% of the soil organic phosphorus. The ratio of scyllo-inositol hexakisphosphate to myo-inositol hexakisphosphate ranged between 0.29 and 0.79. In a 10 month pot experiment with six grassland soils from New Zealand, growth of pine seedlings (Pinus radiata D. Don) decreased scyllo-inositol hexakisphosphate concentrations by between 10 and 46%. Growth of ryegrass (Lolium perenne L.) decreased scyllo-inositol hexakisphosphate in three low-nutrient soils by 5-21%, but increased it in three other soils by 11-16%. We conclude that scyllo-inositol hexakisphosphate is an important component of soil organic phosphorus with potential ecological significance. (c) 2005 Elsevier Ltd. All rights reserved.
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