Tags

Type your tag names separated by a space and hit enter

Characteristics of organic phosphorus fractions in soil from water-level fluctuation zone by solution 31P-nuclear magnetic resonance and enzymatic hydrolysis.
Environ Pollut. 2019 Dec; 255(Pt 2):113209.EP

Abstract

Phosphorus (P) is an essential nutrient element for biological growth that can contribute to eutrophication in aquatic ecosystems. Water trophic status and algae growth are primarily related to the content of bioavailable P, which is primarily related to enzymatically hydrolysable organic P(EHOP) and dissolved inorganic P(IP). In this study, soil samples from the water-level fluctuation zone (WLFZ) were collected from a tributary of the Three Gorges Reservoir (TGR) to characterize the properties of organic P(OP) fractions using solution 31P-nuclear magnetic resonance (NMR) and enzymatic hydrolysis. 31P-NMR showed that orthophosphate was the main part of the bioavailable P in the WLFZ soil and accounted for 80.4% of the NaOH-EDTA extractable total P (NaOH-EDTA TP), while phosphate monoester accounted for 60.5% of NaOH-EDTA extractable OP (NaOH-EDTA OP). The soil properties and replenishment from the mainstream of the Yangtze River to the Pengxi River have a certain effect on the content and distribution of P forms in the WLFZ soil of the tributary. The EHOP accounted for 28.1% of the NaOH-EDTA OP, and a significant positive correlation was observed between labile monoester P and EHOP and organic matter (OM). The water-soluble OP(H2O-OP), bicarbonate-extractable OP(NaHCO3-OP), and Fe- and Al-associated OP(Fe/Al-OP) were significantly hydrolyzed by phosphatase and thus exhibited great release potential. The ranking of the bioavailability of OP was Fe/Al-OP > H2O-OP > NaHCO3-OP. Phytate-like P were mainly found in H2O-OP and NaHCO3-OP, which indicated that periodic submersion-emersion cycles promoted the release of phytate-like P from Fe/Al-OP into the water column of the TGR. These observations suggest that when the external P input was effectively controlled, a huge risk of release of the internal OP from the WLFZ soil, and the biogeochemical cycling of the bioavailable P played an important role in maintaining the eutrophication of the reservoir.

Authors+Show Affiliations

Key Laboratory of the Three Gorges Reservoir Region's EcoEnvironments of MOE, Chongqing University, Chongqing 400045, China.Key Laboratory of the Three Gorges Reservoir Region's EcoEnvironments of MOE, Chongqing University, Chongqing 400045, China.Key Laboratory of the Three Gorges Reservoir Region's EcoEnvironments of MOE, Chongqing University, Chongqing 400045, China. Electronic address: Guo0768@cqu.edu.cn.Key Laboratory of the Three Gorges Reservoir Region's EcoEnvironments of MOE, Chongqing University, Chongqing 400045, China.Key Laboratory of the Three Gorges Reservoir Region's EcoEnvironments of MOE, Chongqing University, Chongqing 400045, China.CAS Key Laboratory of Reservoir Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China.CAS Key Laboratory of Reservoir Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China.CAS Key Laboratory of Reservoir Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31563780

Citation

Qu, Ying, et al. "Characteristics of Organic Phosphorus Fractions in Soil From Water-level Fluctuation Zone By Solution 31P-nuclear Magnetic Resonance and Enzymatic Hydrolysis." Environmental Pollution (Barking, Essex : 1987), vol. 255, no. Pt 2, 2019, p. 113209.
Qu Y, Wang C, Guo J, et al. Characteristics of organic phosphorus fractions in soil from water-level fluctuation zone by solution 31P-nuclear magnetic resonance and enzymatic hydrolysis. Environ Pollut. 2019;255(Pt 2):113209.
Qu, Y., Wang, C., Guo, J., Huang, J., Fang, F., Xiao, Y., Ouyang, W., & Lu, L. (2019). Characteristics of organic phosphorus fractions in soil from water-level fluctuation zone by solution 31P-nuclear magnetic resonance and enzymatic hydrolysis. Environmental Pollution (Barking, Essex : 1987), 255(Pt 2), 113209. https://doi.org/10.1016/j.envpol.2019.113209
Qu Y, et al. Characteristics of Organic Phosphorus Fractions in Soil From Water-level Fluctuation Zone By Solution 31P-nuclear Magnetic Resonance and Enzymatic Hydrolysis. Environ Pollut. 2019;255(Pt 2):113209. PubMed PMID: 31563780.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Characteristics of organic phosphorus fractions in soil from water-level fluctuation zone by solution 31P-nuclear magnetic resonance and enzymatic hydrolysis. AU - Qu,Ying, AU - Wang,Chao, AU - Guo,Jinsong, AU - Huang,Junjie, AU - Fang,Fang, AU - Xiao,Yan, AU - Ouyang,Wenjuan, AU - Lu,Lunhui, Y1 - 2019/09/17/ PY - 2019/05/25/received PY - 2019/09/06/revised PY - 2019/09/06/accepted PY - 2019/9/30/pubmed PY - 2020/1/15/medline PY - 2019/9/30/entrez KW - Enzymatic hydrolysis organic phosphorus KW - Eutrophication KW - Solution (31)P-NMR KW - Three Gorges Reservoir KW - Water-level fluctuation zone SP - 113209 EP - 113209 JF - Environmental pollution (Barking, Essex : 1987) JO - Environ Pollut VL - 255 IS - Pt 2 N2 - Phosphorus (P) is an essential nutrient element for biological growth that can contribute to eutrophication in aquatic ecosystems. Water trophic status and algae growth are primarily related to the content of bioavailable P, which is primarily related to enzymatically hydrolysable organic P(EHOP) and dissolved inorganic P(IP). In this study, soil samples from the water-level fluctuation zone (WLFZ) were collected from a tributary of the Three Gorges Reservoir (TGR) to characterize the properties of organic P(OP) fractions using solution 31P-nuclear magnetic resonance (NMR) and enzymatic hydrolysis. 31P-NMR showed that orthophosphate was the main part of the bioavailable P in the WLFZ soil and accounted for 80.4% of the NaOH-EDTA extractable total P (NaOH-EDTA TP), while phosphate monoester accounted for 60.5% of NaOH-EDTA extractable OP (NaOH-EDTA OP). The soil properties and replenishment from the mainstream of the Yangtze River to the Pengxi River have a certain effect on the content and distribution of P forms in the WLFZ soil of the tributary. The EHOP accounted for 28.1% of the NaOH-EDTA OP, and a significant positive correlation was observed between labile monoester P and EHOP and organic matter (OM). The water-soluble OP(H2O-OP), bicarbonate-extractable OP(NaHCO3-OP), and Fe- and Al-associated OP(Fe/Al-OP) were significantly hydrolyzed by phosphatase and thus exhibited great release potential. The ranking of the bioavailability of OP was Fe/Al-OP > H2O-OP > NaHCO3-OP. Phytate-like P were mainly found in H2O-OP and NaHCO3-OP, which indicated that periodic submersion-emersion cycles promoted the release of phytate-like P from Fe/Al-OP into the water column of the TGR. These observations suggest that when the external P input was effectively controlled, a huge risk of release of the internal OP from the WLFZ soil, and the biogeochemical cycling of the bioavailable P played an important role in maintaining the eutrophication of the reservoir. SN - 1873-6424 UR - https://www.unboundmedicine.com/medline/citation/31563780/Characteristics_of_organic_phosphorus_fractions_in_soil_from_water_level_fluctuation_zone_by_solution_31P_nuclear_magnetic_resonance_and_enzymatic_hydrolysis_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0269-7491(19)32750-2 DB - PRIME DP - Unbound Medicine ER -