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Bioavailability and preservation of organic phosphorus in lake sediments: Insights from enzymatic hydrolysis and 31P nuclear magnetic resonance.
Chemosphere. 2018 Nov; 211:50-61.C

Abstract

Bioavailability and preservation of organic P (Po) in the sediment profiles (DC-1 and DC-2) from Lake Dianchi, a eutrophic lake in China, were investigated by a combination of enzymatic hydrolysis and solution 31P nuclear magnetic resonance (NMR) spectroscopy. Results showed that large of Po could be extracted by NaOH-EDTA (NaOH-EDTA Po), with little Po in residues after extraction with NaOH-EDTA. Bioavailability and preservation of NaOH-EDTA Po provide key information for biogeochemical cycling of Po in sediments. The details of P species and their bioavailability in NaOH-EDTA Po showed that 54.8-70.4% in DC-1 and 54.6-100% in DC-2, measured by 31P NMR, could be hydrolyzed by the phosphatase. Whereas, some proportion of NaOH-EDTA Po could not be hydrolyzed by the phosphatase, and decreased with sediment depth. Interaction between Po and other organic matter (e.g., humic acids) is likely an important factor for preservation of these Po in the sediment profiles. Simulation experiments of hydrolysis of model Po compounds adsorbed by minerals, such as goethite and montmorillonite, further indicated that adsorption to minerals protected some Po, especially phytate-like P, from enzymatic hydrolysis, thus preserving these forms of Po in sediments. Interactions of Po with organic matter and minerals in the sediments are two important factors determining biogeochemical cycling of Po in lakes. Intervention to break the cycle of FeP and bioavailable Po (e.g., labile monoester P) in the history of eutrophication is important way to control algal blooming.

Authors+Show Affiliations

State Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.State Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.State Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.USDA-ARS Southern Regional Research Center, 1100 Robert E Lee Blvd, New Orleans, LA 70124, USA.State Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China. Electronic address: zhaoxiaoli_zxl@126.com.School of Biological and Environmental Engineering, Guiyang University, Guiyang, 550005, China; State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China.State Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Department of Biomedical and Veterinary Biosciences and Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.State Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30071436

Citation

Zhu, Yuanrong, et al. "Bioavailability and Preservation of Organic Phosphorus in Lake Sediments: Insights From Enzymatic Hydrolysis and 31P Nuclear Magnetic Resonance." Chemosphere, vol. 211, 2018, pp. 50-61.
Zhu Y, Feng W, Liu S, et al. Bioavailability and preservation of organic phosphorus in lake sediments: Insights from enzymatic hydrolysis and 31P nuclear magnetic resonance. Chemosphere. 2018;211:50-61.
Zhu, Y., Feng, W., Liu, S., He, Z., Zhao, X., Liu, Y., Guo, J., Giesy, J. P., & Wu, F. (2018). Bioavailability and preservation of organic phosphorus in lake sediments: Insights from enzymatic hydrolysis and 31P nuclear magnetic resonance. Chemosphere, 211, 50-61. https://doi.org/10.1016/j.chemosphere.2018.07.134
Zhu Y, et al. Bioavailability and Preservation of Organic Phosphorus in Lake Sediments: Insights From Enzymatic Hydrolysis and 31P Nuclear Magnetic Resonance. Chemosphere. 2018;211:50-61. PubMed PMID: 30071436.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Bioavailability and preservation of organic phosphorus in lake sediments: Insights from enzymatic hydrolysis and 31P nuclear magnetic resonance. AU - Zhu,Yuanrong, AU - Feng,Weiying, AU - Liu,Shasha, AU - He,Zhongqi, AU - Zhao,Xiaoli, AU - Liu,Yong, AU - Guo,Jianyang, AU - Giesy,John P, AU - Wu,Fengchang, Y1 - 2018/07/24/ PY - 2018/05/14/received PY - 2018/07/14/revised PY - 2018/07/22/accepted PY - 2018/8/3/pubmed PY - 2018/10/23/medline PY - 2018/8/3/entrez KW - (31)P NMR KW - Bioavailability KW - Enzymatic hydrolysis KW - Organic phosphorus KW - Preservation KW - Sediments SP - 50 EP - 61 JF - Chemosphere JO - Chemosphere VL - 211 N2 - Bioavailability and preservation of organic P (Po) in the sediment profiles (DC-1 and DC-2) from Lake Dianchi, a eutrophic lake in China, were investigated by a combination of enzymatic hydrolysis and solution 31P nuclear magnetic resonance (NMR) spectroscopy. Results showed that large of Po could be extracted by NaOH-EDTA (NaOH-EDTA Po), with little Po in residues after extraction with NaOH-EDTA. Bioavailability and preservation of NaOH-EDTA Po provide key information for biogeochemical cycling of Po in sediments. The details of P species and their bioavailability in NaOH-EDTA Po showed that 54.8-70.4% in DC-1 and 54.6-100% in DC-2, measured by 31P NMR, could be hydrolyzed by the phosphatase. Whereas, some proportion of NaOH-EDTA Po could not be hydrolyzed by the phosphatase, and decreased with sediment depth. Interaction between Po and other organic matter (e.g., humic acids) is likely an important factor for preservation of these Po in the sediment profiles. Simulation experiments of hydrolysis of model Po compounds adsorbed by minerals, such as goethite and montmorillonite, further indicated that adsorption to minerals protected some Po, especially phytate-like P, from enzymatic hydrolysis, thus preserving these forms of Po in sediments. Interactions of Po with organic matter and minerals in the sediments are two important factors determining biogeochemical cycling of Po in lakes. Intervention to break the cycle of FeP and bioavailable Po (e.g., labile monoester P) in the history of eutrophication is important way to control algal blooming. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/30071436/Bioavailability_and_preservation_of_organic_phosphorus_in_lake_sediments:_Insights_from_enzymatic_hydrolysis_and_31P_nuclear_magnetic_resonance_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(18)31395-X DB - PRIME DP - Unbound Medicine ER -