Effects of hydrostatic pressure on phosphorus transformation at the water–sediment interface of a deep reservoir: novel insights into bacterial community and functional genes

Zhuo, Tianyu; Ding, Yi; Wan, Qiong; Li, Simin; Chai, Bo; Lei, Xiaohui

doi:10.1007/s11368-021-02965-4

Cited by 8 publications

(2 citation statements)

References 39 publications

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“…Bacterial diversity mediates phosphorus immobilization in the South China Sea [51] and can facilitate phosphorus transfer from sediments to water [29]. Some functional bacteria, including phosphate-accumulating bacteria, phosphate-solubilizing bacteria, and phosphate-mineralizing bacteria are responsible for phosphorus transformation in both aquatic and terrestrial ecosystems [11,22,23]. We guess that phosphorus components could affect the diversity, composition, and function of the sediment bacterial community, whereas the bacterial community might affect phosphorus fractionation in the water-sediment ecosystem.…”

Section: Potential Effects Of Abiotic and Biotic Factors On Phosphoru...mentioning

confidence: 99%

“…Excessive phosphorus in aquatic ecosystems is one of the greatest environmental concerns due to its significant contribution to cyanobacterial bloom [10]. The source of phosphorus in an aquatic ecosystem is mainly from external input (e.g., aquaculture wastewater and phosphorus-containing industrial wastewater) and internal input (e.g., phosphorus release from sediments mediated by phosphorus-cycling-related microorganisms) [5,11]. Previous literature studies have reported that engineered TiO 2 NPs can block phosphorus release from sediments to water by adsorption [9,12,13].…”

Section: Introductionmentioning

confidence: 99%

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Sediment Bacteria and Phosphorus Fraction Response, Notably to Titanium Dioxide Nanoparticle Exposure

Piao

2022

Microorganisms

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Titanium dioxide nanoparticle (TiO2 NP) toxicity to the growth of organisms has been gradually clarified; however, its effects on microorganism-mediated phosphorus turnover are poorly understood. To evaluate the influences of TiO2 NPs on phosphorus fractionation and the bacterial community, aquatic microorganisms were exposed to different concentrations of TiO2 NPs with different exposure times (i.e., 0, 10, and 30 days). We observed the adhesion of TiO2 NPs to the cell surfaces of planktonic microbes by using SEM, EDS, and XRD techniques. The addition of TiO2 NPs resulted in a decrease in the total phosphorus of water and an increase in the total phosphorus of sediments. Additionally, elevated TiO2 NPs enhanced the sediment activities of reductases (i.e., dehydrogenase [0.19–2.25 μg/d/g] and catalase [1.06–2.92 μmol/d/g]), and significantly decreased the absolute abundances of phosphorus-cycling-related genes (i.e., gcd [1.78 × 104–9.55 × 105 copies/g], phoD [5.50 × 103–5.49 × 107 copies/g], pstS [4.17 × 102–1.58 × 106 copies/g]), and sediment bacterial diversity. TiO2 NPs could noticeably affect the bacterial community, showing dramatic divergences in relative abundances (e.g., Actinobacteria, Acidobacteria, and Firmicutes), coexistence patterns, and functional redundancies (e.g., translation and transcription). Our results emphasized that the TiO2 NP amount—rather than the exposure time—showed significant effects on phosphorus fractions, enzyme activity, phosphorus-cycling-related gene abundance, and bacterial diversity, whereas the exposure time exhibited a greater influence on the composition and function of the sediment bacterial community than the TiO2 NP amount. Our findings clarify the responses of phosphorus fractions and the bacterial community to TiO2 NP exposure in the water–sediment ecosystem and highlight potential environmental risks of the migration of untreated TiO2 NPs to aquatic ecosystems.

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Section: Potential Effects Of Abiotic and Biotic Factors On Phosphoru...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sediment Bacteria and Phosphorus Fraction Response, Notably to Titanium Dioxide Nanoparticle Exposure

Piao

2022

Microorganisms

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Effect of controlling nitrogen and phosphorus release from sediment using a biological aluminum–based P-inactivation agent (BA-PIA)

Wang

Tang²,

Gong³

et al. 2023

Environ Sci Pollut Res

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Effect of aluminum-based P-inactivation agent (Al-PIA) capping on bacterial community in sediment

et al. 2022

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Effects of hydrostatic pressure on phosphorus transformation at the water–sediment interface of a deep reservoir: novel insights into bacterial community and functional genes

Cited by 8 publications

References 39 publications

Sediment Bacteria and Phosphorus Fraction Response, Notably to Titanium Dioxide Nanoparticle Exposure

Sediment Bacteria and Phosphorus Fraction Response, Notably to Titanium Dioxide Nanoparticle Exposure

Effect of controlling nitrogen and phosphorus release from sediment using a biological aluminum–based P-inactivation agent (BA-PIA)

Effect of aluminum-based P-inactivation agent (Al-PIA) capping on bacterial community in sediment

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