Stability of Chloropyromorphite in Ryegrass Rhizosphere as Affected by Root-Secreted Low Molecular Weight Organic Acids

dc.contributor.authorWei, Wei
dc.contributor.authorWang, Yu
dc.contributor.authorWang, Zheng
dc.contributor.authorHan, Ruiming
dc.contributor.authorLi, Shiyin
dc.contributor.authorWei, Zhenggui
dc.contributor.authorZhang, Yong
dc.contributor.otherNanjing Normal University
dc.contributor.otherAnqing Normal University
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.date.accessioned2023-09-28T19:34:16Z
dc.date.available2023-09-28T19:34:16Z
dc.date.issued2016
dc.description.abstractUnderstanding the stability of chloropyromorphite (CPY) is of considerable benefit for improving risk assessment and remediation strategies in contaminated water and soil. The stability of CPY in the rhizosphere of phosphorus-deficient ryegrass was evaluated to elucidate the role of root-secreted low molecular weight organic acids (LMWOAs) on the dissolution of CPY. Results showed that CPY treatments significantly reduced the ryegrass biomass and rhizosphere pH. The presence of calcium nitrate extractable lead (Pb) and phosphorus (P) suggested that CPY in the rhizosphere could be bioavailable, because P and Pb uptake by ryegrass potentially provided a significant concentration gradient that would promote CPY dissolution. Pb accumulation and translocation in ryegrass was found to be significantly higher in P-sufficient conditions than in P-deficient conditions. CPY treatments significantly enhanced root exudation of LMWOAs irrigated with P-nutrient solution or P-free nutrient solution. Oxalic acid was the dominant species in root-secreted LMWOAs of ryegrass under P-free nutrient solution treatments, suggesting that root-secreted oxalic acid may be the driving force of root-induced dissolution of CPY. Hence, our work, provides clarifying hints on the role of LMWOAs in controlling the stability of CPY in the rhizosphere.en_US
dc.format.mediumelectronic
dc.format.mimetypeapplication/pdf
dc.identifier.citationWei, W., Wang, Y., Wang, Z., Han, R., Li, S., Wei, Z., & Zhang, Y. (2016). Stability of Chloropyromorphite in Ryegrass Rhizosphere as Affected by Root-Secreted Low Molecular Weight Organic Acids. In E. Kothe (Ed.), PLOS ONE (Vol. 11, Issue 8, p. e0160628). Public Library of Science (PLoS). https://doi.org/10.1371/journal.pone.0160628
dc.identifier.doi10.1371/journal.pone.0160628
dc.identifier.orcidhttps://orcid.org/0000-0003-2918-7107
dc.identifier.urihttps://ir.ua.edu/handle/123456789/11455
dc.languageEnglish
dc.language.isoen_US
dc.publisherPLOS
dc.rights.licenseAttribution 4.0 International (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectCONTAMINATED SOIL
dc.subjectBRASSICA-JUNCEA
dc.subjectMEDICAGO-SATIVA
dc.subjectPHOSPHATE ROCK
dc.subjectLUPINUS-ALBUS
dc.subjectLEAD
dc.subjectHYDROXYAPATITE
dc.subjectPYROMORPHITE
dc.subjectPHOSPHORUS
dc.subjectPB
dc.subjectMultidisciplinary Sciences
dc.titleStability of Chloropyromorphite in Ryegrass Rhizosphere as Affected by Root-Secreted Low Molecular Weight Organic Acidsen_US
dc.typeArticle
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