| Title | Organic Acids Regulation of Chemical Microbial Phosphorus Transformations in Soils |
| Publication Type | Journal Article |
| Year of Publication | 2016 |
| Authors | Menezes-Blackburn D., Paredes C., Zhang H., Giles C.D, Darch T., Stutter M., George T.S, Shand C., Lumsdon D., Cooper P., Wendler R., Brown L., Blackwell M., Wearing C., Haygarth P.M |
| Journal | Environmental Science & Technology |
| Volume | 50 |
| Pagination | 11521-11531 |
| Date Published | Nov |
| Type of Article | Article |
| ISBN Number | 0013-936X |
| Accession Number | WOS:000386991100011 |
| Keywords | citrate efflux, dgt, diffusive gradients, Engineering, Environmental Sciences & Ecology, plants, release, rhizosphere, root, sediments, thin-films, trace-metals |
| Abstract | We have used an integrated approach to study the mobility of inorganic phosphorus (P) from soil solid phase as well as the microbial biomass P and respiration at increasing doses of citric and oxalic acid in two different soils with contrasting agronomic P status. Citric or oxalic acids significantly increased soil solution P concentrations for doses over 2 mmol kg(1). However, low organic acid doses ( |
| Short Title | Environ. Sci. Technol.Environ. Sci. Technol. |
| Alternate Journal | Environ. Sci. Technol. |
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- Organic Acids Regulation of Chemical Microbial Phosphorus Transformations in Soils
Organic Acids Regulation of Chemical Microbial Phosphorus Transformations in Soils
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[biblio_abst_e] => We have used an integrated approach to study the mobility of inorganic phosphorus (P) from soil solid phase as well as the microbial biomass P and respiration at increasing doses of citric and oxalic acid in two different soils with contrasting agronomic P status. Citric or oxalic acids significantly increased soil solution P concentrations for doses over 2 mmol kg(1). However, low organic acid doses (<2 mmol kg(1)) were associated with a steep increase in microbial biomass P, which was not seen for higher doses. In both soils, treatment with the tribasic citric acid led to a greater increase in soil solution P than the dibasic oxalic acid, likely due to the rapid degrading of oxalic acids in soils. After equilibration of soils with citric or oxalic acids, the adsorbed-to-solution distribution coefficient (K-d) and desorption rate constants (k(1)) decreased whereas an increase in the response time of solution P equilibration (T-c) was observed. The extent of this effect was shown to be both soil and organic acid specific. Our results illustrate the critical thresholds of organic acid concentration necessary to mobilize sorbed and precipitated P, bringing new insight on how the exudation of organic acids regulate chemicalmicrobial soil phosphorus transformations.
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Cited Reference Count: 40
Menezes-Blackburn, Daniel Paredes, Cecilia Zhang, Hao Giles, Courtney D. Darch, Tegan Stutter, Marc George, Timothy S. Shand, Charles Lumsdon, David Cooper, Patricia Wendler, Renate Brown, Lawrie Blackwell, Martin Wearing, Catherine Haygarth, Philip M.
Zhang, Hao/E-5375-2010
Darch, Tegan/0000-0003-2367-043X
Biotechnology and Biological Sciences Research Council in the UK [BBSRC - BBSRC - BB/K018167/1]; Scottish Government Rural Environment Research and Analysis Directorate
This work was performed as part of the Organic Phosphorus Utilisation in Soils (OPUS) project, funded by Biotechnology and Biological Sciences Research Council (BBSRC - BBSRC - BB/K018167/1) in the UK. We thank the Scottish Government Rural Environment Research and Analysis Directorate for funding aspects of this research.
20
Amer chemical soc
Washington
1520-5851
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[biblio_auth_address] => [Menezes-Blackburn, Daniel; Zhang, Hao; Wearing, Catherine; Haygarth, Philip M.] Univ Lancaster, Lancaster Environm Ctr, Lancaster LA1 4YQ, England. [Paredes, Cecilia] Univ La Frontera, Sci & Technol Bioresource Nucl BIOREN, Temuco, Chile. [Giles, Courtney D.; Stutter, Marc; George, Timothy S.; Shand, Charles; Lumsdon, David; Cooper, Patricia; Wendler, Renate; Brown, Lawrie; Blackwell, Martin] James Hutton Inst, Aberdeen AB15 8QH, Scotland. [Giles, Courtney D.; Stutter, Marc; George, Timothy S.; Shand, Charles; Lumsdon, David; Cooper, Patricia; Wendler, Renate; Brown, Lawrie; Blackwell, Martin] James Hutton Inst, Dundee DD2 5DA, Scotland. [Darch, Tegan] Rothamsted Res, Okehampton EX20 2SB, Devon, England.
Menezes-Blackburn, D; Zhang, H (reprint author), Univ Lancaster, Lancaster Environm Ctr, Lancaster LA1 4YQ, England.
d.blackburn@lancaster.ac.uk; h.zhang@lancaster.ac.uk
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