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Article ; Online: Cadmium-Induced Physiological Responses, Biosorption and Bioaccumulation in

Xu, Pingping / Tu, Xiaojie / An, Zhengda / Mi, Wujuan / Wan, Dong / Bi, Yonghong / Song, Gaofei

2024 Volume 12, Issue 4

Abstract: Cadmium ion ( ... ...

Abstract	Cadmium ion (Cd
Language	English
Publishing date	2024-03-31
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2733883-6
ISSN	2305-6304 ; 2305-6304
ISSN (online)	2305-6304
ISSN	2305-6304
DOI	10.3390/toxics12040262
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Article ; Online: Introducing Cyanodorina gen. nov. and Cyanodorina ovale sp. nov. (Microcystaceae, Chroococcales), a Novel Coccoid Cyanobacterium Isolated from Caohai Lake in China Based on a Polyphasic Approach

Chen, Wei / Li, Shuyin / Xu, Yuanzhao / Geng, Ruozhen / Song, Gaofei / Ma, Peiming

Diversity. 2023 Feb. 23, v. 15, no. 3

2023

Abstract: The Chroococcales is one of the least studied cyanobacterial orders comprising the non-baeocyte-producing coccoids cyanobacteria with stacked and fasciculated thylakoids. During a survey of aquatic biodiversity in Caohai Lake in Guizhou Province, China, ... ...

Abstract	The Chroococcales is one of the least studied cyanobacterial orders comprising the non-baeocyte-producing coccoids cyanobacteria with stacked and fasciculated thylakoids. During a survey of aquatic biodiversity in Caohai Lake in Guizhou Province, China, a coccoid-like cyanobacterium was isolated. It was characterized using a polyphasic approach, based on morphology, electron microscopy, and molecular phylogenetic analyses. This species’ colonies exhibited morphological similarity to those of Microcystis species but differed in their larger colony sizes and widely oval cells. The 16S rRNA gene sequence of this species had the maximum homology, corresponding to 93.10%, to that of the genus Microcystis. The results of 16S rRNA gene threshold value and 16S rRNA phylogenetic analyses confirmed that the studied species belongs to the family Microcystaceae but is phylogenetically distinct from the other species of Microcystaceae. Furthermore, The D1–D1′, Box–B helix, and V3 helix of the 16S–23S ITS region were also different from those previously described in Microcystaceae taxa. Combining the morphological, ecological, and molecular features of the coccoid-like cyanobacterium, we here propose the establishment of the Cyanodorina gen. nov. and the Cyanodorina ovale sp. nov.
Keywords	Microcystis ; biodiversity ; electron microscopy ; genes ; lakes ; nucleotide sequences ; phylogeny ; surveys ; thylakoids ; China
Language	English
Dates of publication	2023-0223
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article ; Online
ZDB-ID	2518137-3
ISSN	1424-2818
ISSN	1424-2818
DOI	10.3390/d15030329
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Article ; Online: Assembly processes of eukaryotic plankton communities in the world's largest drinking water diversion project

Zhang, Chunmei / Zhu, Feixia / Wang, Yuanzhu / Zhu, Yuxuan / Song, Gaofei / Mi, Wujuan / Bi, Yonghong

Science of the Total Environment. 2023, p.163665-

2023 , Page(s) 163665–

Abstract: The largest engineered water diversion project-the Middle Route of the South to North Water Diversion Project (MRP), is of strategic importance in solving the problem of the northern water shortage in China. Eukaryotic plankton are important to the water ...

Abstract	The largest engineered water diversion project-the Middle Route of the South to North Water Diversion Project (MRP), is of strategic importance in solving the problem of the northern water shortage in China. Eukaryotic plankton are important to the water quality stability in the MRP, but little has been reported about their dynamics and assembly processes, especially for abundant and rare communities. In this study, amplicon sequencing was used to investigate the eukaryotic plankton communities. The results revealed both abundant and rare communities exhibited similar distance-decay patterns, but abundant communities were particularly subject to environmental heterogeneity and played an important role in determining seasonal differences in eukaryotic plankton communities and alpha diversity. In the MRP, with its strong hydrodynamic exchange, abundant and rare communities were mainly affected by stochastic processes, especially homogenizing dispersal. In addition, abundant communities were subject to moderate variable selection (25 %) and rare communities were affected by a higher proportion of dispersal limitation (27 % vs. 10 %). The variation in water temperature and water velocity led to a shift from a stochastic to a deterministic process dominating the assembly of abundant communities. This study extends insights into the dynamics and assembly processes of abundant and rare eukaryotic plankton communities in the large, engineered drinking water diversion project, which is also useful for the management and regulation of the MRP.
Keywords	environment ; hydrodynamics ; plankton ; species diversity ; water quality ; water shortages ; water temperature ; China ; The South-to-North Water Diversion Project of China ; Drinking water ; Eukaryotic plankton dynamics ; Abundant and rare taxa ; Assembly processes
Language	English
Publishing place	Elsevier B.V.
Document type	Article ; Online
Note	Pre-press version
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2023.163665
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Article ; Online: Insights into the Enhanced Photogeneration of Hydroxyl Radicals from Chlorinated Dissolved Organic Matter.

Wan, Dong / Song, Gaofei / Mi, Wujuan / Tu, Xiaojie / Zhao, Yafei / Bi, Yonghong

Environmental science & technology

2023 Volume 58, Issue 1, Page(s) 805–815

Abstract: Free available chlorine has been and is being applied in global water treatment and readily reacts with dissolved organic matter (DOM) in aquatic environments, leading to the formation of chlorinated products. Chlorination enhances the photoreactivity of ...

Abstract	Free available chlorine has been and is being applied in global water treatment and readily reacts with dissolved organic matter (DOM) in aquatic environments, leading to the formation of chlorinated products. Chlorination enhances the photoreactivity of DOM, but the influence of chlorinated compounds on the photogeneration of hydroxyl radicals (
MeSH term(s)	Hydroxyl Radical/analysis ; Hydroxyl Radical/chemistry ; Dissolved Organic Matter ; Photolysis ; Oxidation-Reduction ; Carboxylic Acids ; Water Pollutants, Chemical/analysis
Chemical Substances	Hydroxyl Radical (3352-57-6) ; Dissolved Organic Matter ; Carboxylic Acids ; Water Pollutants, Chemical
Language	English
Publishing date	2023-12-29
Publishing country	United States
Document type	Journal Article
ISSN	1520-5851
ISSN (online)	1520-5851
DOI	10.1021/acs.est.3c08257
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Article ; Online: Assembly processes of eukaryotic plankton communities in the world's largest drinking water diversion project.

Zhang, Chunmei / Zhu, Feixia / Wang, Yuanzhu / Zhu, Yuxuan / Song, Gaofei / Mi, Wujuan / Bi, Yonghong

The Science of the total environment

2023 Volume 884, Page(s) 163665

Abstract	The largest engineered water diversion project-the Middle Route of the South to North Water Diversion Project (MRP), is of strategic importance in solving the problem of the northern water shortage in China. Eukaryotic plankton are important to the water quality stability in the MRP, but little has been reported about their dynamics and assembly processes, especially for abundant and rare communities. In this study, amplicon sequencing was used to investigate the eukaryotic plankton communities. The results revealed both abundant and rare communities exhibited similar distance-decay patterns, but abundant communities were particularly subject to environmental heterogeneity and played an important role in determining seasonal differences in eukaryotic plankton communities and alpha diversity. In the MRP, with its strong hydrodynamic exchange, abundant and rare communities were mainly affected by stochastic processes, especially homogenizing dispersal. In addition, abundant communities were subject to moderate variable selection (25 %) and rare communities were affected by a higher proportion of dispersal limitation (27 % vs. 10 %). The variation in water temperature and water velocity led to a shift from a stochastic to a deterministic process dominating the assembly of abundant communities. This study extends insights into the dynamics and assembly processes of abundant and rare eukaryotic plankton communities in the large, engineered drinking water diversion project, which is also useful for the management and regulation of the MRP.
MeSH term(s)	Eukaryota ; Drinking Water ; China ; Hydrodynamics ; Plankton
Chemical Substances	Drinking Water
Language	English
Publishing date	2023-04-22
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2023.163665
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Article ; Online: Evaluation of Cd2+ stress on Synechocystis sp. PCC6803 based on single-cell elemental accumulation and algal toxicological response

Tao, Yao / He, Man / Chen, Beibei / Ruan, Gang / Xu, Pingping / Xia, Yixue / Song, Gaofei / Bi, Yonghong / Hu, Bin

Aquatic Toxicology. 2023 May, v. 258 p.106499-

2023

Abstract: With the development of single cell analysis techniques, the concept of precision toxicology has been proposed in recent years. Due to the heterogeneity of cells, we need to perform toxicological assessments on individual cells. Microalgae, one kind of ... ...

Abstract	With the development of single cell analysis techniques, the concept of precision toxicology has been proposed in recent years. Due to the heterogeneity of cells, we need to perform toxicological assessments on individual cells. Microalgae, one kind of important primary producers, play as a major pathway by which heavy metals enter the food chain and thus accumulate/transfer to higher trophic levels. Herein, the biosorption of Cd (Ex-Cd) and bioaccumulation of Cd (In-Cd) for Synechocystis sp. PCC 6803 were investigated by online 3D droplet microfluidic device combined with inductively coupled plasma mass spectrometry detection. Meanwhile, the algal toxicological responses of the algae cell to Cd²⁺ exposure under different concentration (50, 100, and 150 μg L ⁻ ¹) and time (15 min, 24, 48 and 96 h) were studied. Combining single-cell analysis with toxicological indicators, the toxicity mechanism of Cd²⁺to algal was discussed. The single cell analysis results revealed heterogeneity in cellular uptake of Cd²⁺. The proportion of Cd-containing cells and Cd content in single algal cells all reached the maximum at 24 h. The uptake of Cd²⁺ occurred within 15 min under all tested exposure concentrations and a large part of Cd²⁺ were adsorbed on the algal cells surface. The Pearson correlation analysis showed that cell density, chlorophyll a and carotenoids were significantly negatively correlated with Cd accumulation, whereas ROS level and SOD activity were significantly positively correlated with Cd accumulation. It suggested that Cd²⁺accumulated intracellular would show toxic effects on the algal cells and oxidative stress is the main mechanism of Cd toxicity to algal cells. This work promotes our understanding of the toxicological responses of microalgae under Cd stress at single cells level.
Keywords	Synechocystis ; atomic absorption spectrometry ; bioaccumulation ; biosorption ; carotenoids ; chlorophyll ; droplets ; food chain ; microalgae ; oxidative stress ; toxicity ; toxicology ; Cadmium, Synechocystis sp. PCC6803 ; Toxicological response ; 3D droplet microfluidic device ; ICP-MS ; Single cell analysis
Language	English
Dates of publication	2023-05
Publishing place	Elsevier B.V.
Document type	Article ; Online
ZDB-ID	782699-0
ISSN	1879-1514 ; 0166-445X
ISSN (online)	1879-1514
ISSN	0166-445X
DOI	10.1016/j.aquatox.2023.106499
Database	NAL-Catalogue (AGRICOLA)

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Article: Addition of humic acid accelerates the growth of Euglena pisciformis AEW501 and the accumulation of lipids

Fan, Panpan / Xu, Pingping / Zhu, Yuxuan / Tu, Xiaojie / Song, Gaofei / Zuo, Yanxia / Bi, Yonghong

Journal of applied phycology. 2022 Feb., v. 34, no. 1

2022

Abstract: As an excellent cell factory rich in polyunsaturated fatty acids, β-1,3-glucan, amino acids, and vitamins, Euglena has gained great attention with high-value products in recent years. In order to determine the optimal cultivation method of Euglena ... ...

Abstract	As an excellent cell factory rich in polyunsaturated fatty acids, β-1,3-glucan, amino acids, and vitamins, Euglena has gained great attention with high-value products in recent years. In order to determine the optimal cultivation method of Euglena pisciformis AEW501, the effects of phototrophic, mixotrophic, and heterotrophic mode on its growth were investigated, and humic acid (HA) as a growth stimulant was added into the mixotrophic culture system to verify the hypothesis that HA addition could accelerate the growth and lipid accumulation of E. pisciformis AEW501. The results indicated that biomass of mixotrophic mode (330 ± 0.05 mg L⁻¹) was 4.80 times and 7.65 times higher than that of phototrophic and heterotrophic mode, respectively, and mixotrophy was proved as the optimal trophic mode. Moreover. The maximum biomass productivity (34.63 mg L⁻¹ day⁻¹) and the highest lipid content (59.51%) were achieved in 50 mg L⁻¹ HA treatment though there was no significant difference between 10 mg L⁻¹ and 50 mg L⁻¹ treatments. While photosynthetic efficiency of photosystem II, pigments content, cell size, and yield of eicosapentaenoic (EPA) and docosahexaenoic (DHA) in 10 mg L⁻¹ HA treatment were the highest. It could be concluded that HA showed good promotion effects on growth and high-value products accumulation of E. pisciformis AEW501. This research will be helpful for the large-scale cultivation of E. pisciformis AEW501.
Keywords	Euglena ; algology ; biomass production ; culture media ; docosahexaenoic acid ; eicosapentaenoic acid ; humic acids ; lipid content
Language	English
Dates of publication	2022-02
Size	p. 51-63.
Publishing place	Springer Netherlands
Document type	Article
ZDB-ID	1002324-0
ISSN	1573-5176 ; 0921-8971
ISSN (online)	1573-5176
ISSN	0921-8971
DOI	10.1007/s10811-021-02623-9
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Article: Environmental Factors Drive Periphytic Algal Community Assembly in the Largest Long-Distance Water Diversion Channel

Zhu, Yuxuan / Mi, Wujuan / Tu, Xiaojie / Song, Gaofei / Bi, Yonghong

Water. 2022 Mar. 15, v. 14, no. 6

2022

Abstract: Periphytic algae exist widely in different waters. However, little is known about periphytic algae in long-distance water diversion channels across watersheds. We investigated the periphytic algae and the environmental factors at twenty sampling sites in ...

Abstract	Periphytic algae exist widely in different waters. However, little is known about periphytic algae in long-distance water diversion channels across watersheds. We investigated the periphytic algae and the environmental factors at twenty sampling sites in the middle route of the South-to-North Water Diversion Project (MRP). The dominant species were Desmodesmus intermedius (Hegewald), Calothrix thermalis (Bornet & Flahault), Calothrix parietina (Bornet & Flahault) and Leptolyngbya benthonica (Anagnostidis) (dominance > 0.02) as measured in a whole year. Habitat heterogeneity in the MRP led to lower spatial heterogeneity and higher temporal heterogeneity of the periphytic algal community. Stochastic processes are the major process in periphytic community assembly. In deterministic processes, homogeneous selection had the major role in structuring the periphytic community, whereas the role of heterogeneous selection was less significant. In stochastic processes, dispersal limitations had the major role in structuring the periphytic community, whereas the role of homogenizing dispersal and drift were less significant. The variation in total nitrogen and total phosphorus promoted more stochastic processes (−1.96 < βNTI < 1.96). The variations in water temperature and water velocity promoted more heterogeneous selection (βNTI > 1.96). In integrating all of this empirical evidence, we explore the role of environmental factors in the action of ecological processes shaping thecommunity assembly of the periphytic algal community.
Keywords	Calothrix parietina ; Desmodesmus ; Leptolyngbya ; algae ; dominant species ; habitats ; spatial variation ; total nitrogen ; total phosphorus ; water ; water temperature
Language	English
Dates of publication	2022-0315
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article
ZDB-ID	2521238-2
ISSN	2073-4441
ISSN	2073-4441
DOI	10.3390/w14060914
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Article ; Online: Metformin Improves the Prognosis of Adult Mice with Sepsis-Associated Encephalopathy Better than That of Aged Mice.

Song, Gaofei / Liang, Huoyan / Song, Heng / Ding, Xianfei / Wang, Dong / Zhang, Xiaojuan / Sun, Tongwen

Journal of immunology research

2022 Volume 2022, Page(s) 3218452

Abstract: Sepsis-associated encephalopathy (SAE) is often associated with increased ICU occupancy and hospital mortality and poor long-term outcomes, with currently no specific treatment. Pathophysiological mechanisms of SAE are complex and may involve activation ... ...

Abstract	Sepsis-associated encephalopathy (SAE) is often associated with increased ICU occupancy and hospital mortality and poor long-term outcomes, with currently no specific treatment. Pathophysiological mechanisms of SAE are complex and may involve activation of microglia, multiple intracranial inflammatory factors, and inflammatory pathways. We hypothesized that metformin may have an effect on microglia, which affects the prognosis of SAE. In this study, metformin treatment of mice with SAE induced by lipopolysaccharide (LPS) reduced the expression of microglia protein and related inflammatory factors. Poor prognosis of SAE is related to increased expression of tumor necrosis factor-
MeSH term(s)	Animals ; Lipopolysaccharides/pharmacology ; Metformin/metabolism ; Metformin/pharmacology ; Metformin/therapeutic use ; Mice ; Microglia/metabolism ; NF-kappa B/metabolism ; Prognosis ; Sepsis/complications ; Sepsis/drug therapy ; Sepsis/metabolism ; Sepsis-Associated Encephalopathy/drug therapy ; Sepsis-Associated Encephalopathy/metabolism ; Sepsis-Associated Encephalopathy/pathology
Chemical Substances	Lipopolysaccharides ; NF-kappa B ; Metformin (9100L32L2N)
Language	English
Publishing date	2022-05-04
Publishing country	Egypt
Document type	Journal Article
ZDB-ID	2817541-4
ISSN	2314-7156 ; 2314-7156
ISSN (online)	2314-7156
ISSN	2314-7156
DOI	10.1155/2022/3218452
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Article ; Online: Damage mechanism of calcium peroxide on Microcystis aeruginosa PCC7806 and its potential application.

Zhang, Yuheng / Qiu, Pengfei / Bi, Yonghong / Wan, Dong / Mi, Wujuan / Tian, Chuming / Qiu, Changen / Song, Gaofei

Ecotoxicology and environmental safety

2023 Volume 264, Page(s) 115466

Abstract: Calcium peroxide (CP) is an oxidizing agent that can gradually release hydrogen peroxide (HP) to achieve selective killing of cyanobacteria in water blooms, and reduce the phosphorus content in the water column. Despite the potential of CP for use in ... ...

Abstract	Calcium peroxide (CP) is an oxidizing agent that can gradually release hydrogen peroxide (HP) to achieve selective killing of cyanobacteria in water blooms, and reduce the phosphorus content in the water column. Despite the potential of CP for use in cyanobacterial water bloom disposal, there is a lack of research on the mechanism of oxidative damage on cyanobacterial cells by calcium peroxide. Further studies are required to comprehend the underlying scientific principles and potential risks and benefits of applying this approach to cyanobacteria disposal. In this investigation, we employed varying doses of CP for the treatment of Microcystis aeruginosa (M. aeruginosa), which resulted in the following findings: (1) the HP released from CP can damage the photosystem II of M. aeruginosa, reduce cell photosynthetic pigment content, intensify the degree of membrane lipid peroxidation, and increase the extracellular protein content; (2) CP significantly increased the soluble extracellular polysaccharide (sEPS) and bound extracellular polysaccharide (bEPS) content of cells (p < 0.05), causing the cells to exist as agglomerates and effectively allowing them to flocculate and precipitate, reducing the turbidity of the water body; (3) The increased dose elevated the pH and calcium ions significantly decreased the orthophosphate content, resulting in an increase in extracellular alkaline phosphatase activity, but possibly increasing the total extracellular nitrogen content. These results suggested that CP is an effective chemical algaecide for cyanobacteria, and has the potential to be applied to dispose of cyanobacterial blooms while reducing the phosphorus content of the water column and further inhibiting the growth and proliferation of cells.
MeSH term(s)	Microcystis ; Hydrogen Peroxide ; Oxidants ; Phosphorus
Chemical Substances	calcium peroxide (7FRO2ENO91) ; Hydrogen Peroxide (BBX060AN9V) ; Oxidants ; Phosphorus (27YLU75U4W)
Language	English
Publishing date	2023-09-13
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	436536-7
ISSN	1090-2414 ; 0147-6513
ISSN (online)	1090-2414
ISSN	0147-6513
DOI	10.1016/j.ecoenv.2023.115466
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