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dc.contributor.authorJoshi, Sunendra R.
dc.contributor.authorTfaily, Malak M.
dc.contributor.authorYoung, Robert P.
dc.contributor.authorMcNear, David H.
dc.date.accessioned2024-01-25T18:38:40Z
dc.date.available2024-01-25T18:38:40Z
dc.date.issued2023-12-29
dc.identifier.citationJoshi, S. R., Tfaily, M. M., Young, R. P., & McNear Jr, D. H. (2023). Root exudates induced coupled carbon and phosphorus cycling in a soil with low phosphorus availability. Plant and Soil, 1-20.en_US
dc.identifier.issn0032-079X
dc.identifier.doi10.1007/s11104-023-06442-4
dc.identifier.urihttp://hdl.handle.net/10150/670770
dc.description.abstractBackground and aims: The amount and type of root exudates can influence P availability in the rhizosphere directly by desorption or dissolution of soil minerals, or indirectly by decomposition of soil organic matter (SOM). This study aimed to determine the mechanisms by which specific root exudates influence the distribution and availability of P in soils with low P availability. Methods: Water, glucose, alanine, and oxalate were delivered through a simulated root into soils for 15 days. Zymography and planar optodes were used to image potential phosphatase activity, and O2 and pH distribution, respectively. Soils were analyzed for resin extractable inorganic P (Pi), dissolved organic C (DOC), water soluble Fe, and Al, and microbial community structure. Characterization of SOM and P were conducted using ultra-high resolution mass spectrometry and 31P solution nuclear magnetic resonance (NMR), respectively. Results: The addition of oxalate resulted in the greatest resin extractable Pi, DOC, and water-soluble Fe, and Al compared to the other exudates suggesting destabilization of mineral associated organic matter (MAOM) and release of organic P (Po). Both 31P solution NMR and ultra-high resolution mass spectrometry analysis provided evidence of mineralization of Po released from the destabilization of MAOM. Conclusion: The study demonstrates the important role microbial and plant-derived metal chelating ligands play in destabilizing MAOM, releasing SOM and importantly Po, that when mineralized may contribute to increasing Pi availability in soils with low P availability.en_US
dc.language.isoenen_US
dc.publisherSpringer Science and Business Media LLCen_US
dc.rights© The Author(s), under exclusive licence to Springer Nature Switzerland AG 2023.en_US
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en_US
dc.subjectPlant scienceen_US
dc.subjectsoil scienceen_US
dc.subjectMineral associated organic matteren_US
dc.subjectMineralizationen_US
dc.subjectOrganic phosphorusen_US
dc.subjectRhizosphere primingen_US
dc.subjectRoot exudatesen_US
dc.titleRoot exudates induced coupled carbon and phosphorus cycling in a soil with low phosphorus availabilityen_US
dc.typeArticleen_US
dc.identifier.eissn1573-5036
dc.contributor.departmentDepartment of Environmental Science, University of Arizonaen_US
dc.identifier.journalPlant and Soilen_US
dc.description.note12 month embargo; first published 29 December 2023en_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal accepted manuscripten_US
dc.identifier.pii6442
dc.source.journaltitlePlant and Soil


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