1
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Hou X, Li Y, Zhang X, Ge S, Mu Y, Shen J. Unraveling the intracellular and extracellular self-defense of Chlorella sorokiniana toward highly toxic pyridine stress. BIORESOURCE TECHNOLOGY 2023:129366. [PMID: 37343803 DOI: 10.1016/j.biortech.2023.129366] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 06/17/2023] [Accepted: 06/17/2023] [Indexed: 06/23/2023]
Abstract
A bottleneck of microalgae-based techniques for wastewater bioremediation is activity inhibition of microalgae by toxic pollutants. The defense strategies of Chlorella sorokinana against toxic pyridine were studied. Results indicated that pyridine caused photoinhibition and reactive oxygen species overproduction in a concentration-dependent manner. The 50% inhibitory concentration of pyridine (147 mg L-1) destroyed C/N balance, disrupted multiple metabolic pathways of C. sorokinana. In response to pyridine stress, ascorbate peroxidase and catalase activities increased to scavenge reactive oxygen species under pyridine concentrations lower than 23 mg L-1. At higher pyridine concentrations, the activation of calcium signaling pathways and phytohormones represented the predominant defense response. Extracellular polymeric substances increased 3.6-fold in 147 mg L-1 group than control, which interacted with pyridine through hydrophobic and aromatic stacking to resist pyridine entering algal cells. Unraveling the intracellular and extracellular self-defense mechanisms of microalgae against pyridine stress facilitates the development of microalgal-based technology in wastewater bioremediation.
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Affiliation(s)
- Xinying Hou
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Yan Li
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Xiaoyu Zhang
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Shijian Ge
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Yang Mu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Jinyou Shen
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
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2
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Gil CS, Eom SH. Two different anti-algal control mechanisms in Microcystis aeruginosa induced by robinin or tannin rich plants. CHEMOSPHERE 2023; 323:138202. [PMID: 36849021 DOI: 10.1016/j.chemosphere.2023.138202] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 02/05/2023] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
Phytochemical is considered an alternative method for cyanobacterial bloom control in aquatic environments. When cyanobacteria are treated with anti-algal materials produced from plant tissues, they tend to exhibit growth inhibition or necrosis of cells. These different anti-algal responses have not been well discussed, and thus, the modes of anti-algal action in cyanobacteria remain obscure. In this study, transcriptomic and biochemical researches were conducted to understand the mechanisms of cyanobacterial growth inhibition and necrosis in harmful cyanobacterial cells exposed to allelopathic materials. The cyanobacteria Microcystis aeruginosa was treated with aqueous extracts of walnut husk, rose leaf, and kudzu leaf. Walnut husk and rose leaf extracts induced mortality of cyanobacterial population with cell necrosis, whereas kudzu leaf extract exhibited poorly grown cells with shrunk size. Through RNA sequencing, it was revealed that the necrotic extracts significantly downregulated critical genes in enzymatic chain reactions for carbohydrate assembly in the carbon fixation cycle and peptidoglycan synthesis. Compared to the necrotic extract treatment, expression of several genes related to DNA repair, carbon fixation, and cell reproduction was less interrupted by the kudzu leaf extract. Biochemical analysis of cyanobacterial regrowth was performed using gallotannin and robinin. Gallotannin was identified as the major anti-algal compound in walnut husk and rose leaf affecting cyanobacterial necrosis, whereas robinin, which is the typical chemical in kudzu leaf, was associated with growth inhibition of cyanobacterial cells. These combinational studies using RNA sequencing and regrowth assays provided evidence supporting the allelopathic effects of plant-derived materials on cyanobacterial control. Furthermore, our findings suggest novel algicidal scenarios with different responses in the cyanobacterial cells depending on the type of anti-algal compounds.
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Affiliation(s)
- Chan Saem Gil
- Department of Smart Farm Science, College of Life Sciences, Kyung Hee University, Yongin, 17104, South Korea.
| | - Seok Hyun Eom
- Department of Smart Farm Science, College of Life Sciences, Kyung Hee University, Yongin, 17104, South Korea.
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3
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Zhao Q, Jiang R, Shi Y, Shen A, He P, Shao L. Allelopathic Inhibition and Mechanism of Quercetin on Microcystis aeruginosa. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12091808. [PMID: 37176865 PMCID: PMC10181490 DOI: 10.3390/plants12091808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 04/18/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023]
Abstract
The utilization of allelochemicals to inhibit algal overgrowth is a promising approach for controlling harmful algal blooms (HABs). Quercetin has been found to have an allelopathic effect on algae. However, its responsive mechanism needs to be better understood. In the present study, the inhibitory effects of different quercetin concentrations on M. aeruginosa were evaluated, and the inhibition mechanisms were explored. The results demonstrated that quercetin significantly inhibited M. aeruginosa growth, and the inhibitory effect was concentration-dependent. The inhibition rate of 40 mg L-1 quercetin on algal density reached 90.79% after 96 h treatment. The concentration of chlorophyll-a (chl-a) in treatment groups with quercetin concentrations of 10, 20, and 40 mg L-1 decreased by 59.74%, 74.77%, and 80.66% at 96 h, respectively. Furthermore, quercetin affects photosynthesis and damages the cell membrane, respiratory system, and enzyme system. All photosynthetic fluorescence parameters, including the maximum photochemical quantum yield (Fv/Fm), the actual photochemical quantum yield (YII), the maximum relative electron transfer rate (rETRmax), and light use efficiency (α), exhibited a downtrend after exposure. After treatment with 20 mg L-1 quercetin, the nucleic acid and protein content in the algal solution increased, and the respiration rate of algae decreased significantly. Additionally, superoxide dismutase (SOD) activities significantly increased as a response to oxidative stress. In comparison, the activities of ribulose 1,5-biphosphate carboxylase (Rubisco) and phosphoenolpyruvate carboxylase (PEPC) decreased significantly. These results revealed that quercetin could inhibit M. aeruginosa by affecting its photosynthesis, respiration, cell membrane, and enzymic system. These results are promising for controlling M. aeruginosa effectively.
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Affiliation(s)
- Qianming Zhao
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China
| | - Ruitong Jiang
- Shanghai Engineering Research Center of River and Lake Biochain Construction and Resource Utilization, Shanghai 201702, China
| | - Yuxin Shi
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China
| | - Anglu Shen
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China
| | - Peimin He
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China
- Marine Scientific Research Institute, Shanghai Ocean University, Shanghai 201306, China
- Water Environment & Ecology Engineering Research Center of Shanghai Institution of Higher Education, Shanghai 201306, China
| | - Liu Shao
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China
- Marine Scientific Research Institute, Shanghai Ocean University, Shanghai 201306, China
- Water Environment & Ecology Engineering Research Center of Shanghai Institution of Higher Education, Shanghai 201306, China
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4
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Ni L, Li Y, Li X, Xu C, Du C, Wu H, Li S. Response of cytotoxin production ability to gene expression and cell molecular structure of Microcystis aeruginosa FACHB-905. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:47209-47220. [PMID: 36732453 DOI: 10.1007/s11356-023-25218-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 01/05/2023] [Indexed: 02/04/2023]
Abstract
To investigate the inhibitory mechanism of artemisinin sustained-release microspheres (ASMs) on Microcystis aeruginosa (M. aeruginosa) from the molecular level, prx, psbA, fabZ, and mcyD were studied, and the cell death mode were also explored. The results showed that expression of prx was slightly up-regulated, while the expression of psbA, fabZ, and mcyD was significantly reduced. It can infer that oxidant damage and photic damage are the main mechanisms for the algicidal effect of ASMs on M. aeruginosa. It can be seen from the changes in cell morphology and structure that microspheres stress triggers apoptosis-like cell death, and the cell membrane is intact effectively preventing the leakage of microcystin-LR (MC-LR). Moreover, the down-regulation of mcyD gene also played major role in less extracellular MC-LR than intracellular MC-LR. It was concluded that the ASMs will not cause secondary ecological hazards while killing algae cells and have good application prospects.
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Affiliation(s)
- Lixiao Ni
- Key Laboratory of Integrated Regulation and Resource Development On Shallow Lakes, MOE, College of Environment, Hohai University, Nanjing, 210098, China
| | - Yan Li
- Key Laboratory of Integrated Regulation and Resource Development On Shallow Lakes, MOE, College of Environment, Hohai University, Nanjing, 210098, China
| | - Xianglan Li
- Key Laboratory of Integrated Regulation and Resource Development On Shallow Lakes, MOE, College of Environment, Hohai University, Nanjing, 210098, China
| | - Chu Xu
- Key Laboratory of Integrated Regulation and Resource Development On Shallow Lakes, MOE, College of Environment, Hohai University, Nanjing, 210098, China
| | - Cunhao Du
- Key Laboratory of Integrated Regulation and Resource Development On Shallow Lakes, MOE, College of Environment, Hohai University, Nanjing, 210098, China
| | - Hanqi Wu
- Key Laboratory of Integrated Regulation and Resource Development On Shallow Lakes, MOE, College of Environment, Hohai University, Nanjing, 210098, China
| | - Shiyin Li
- School of Environment, Nanjing Normal University, Nanjing, 210097, China.
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5
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Mohamed Z, Alamri S, Hashem M, Mostafa Y. Bioremoval of Cylindrospermopsis raciborskii cells and cylindrospermopsin toxin in batch culture by the yeast Aureobasidium pullulans. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:90140-90146. [PMID: 35864401 DOI: 10.1007/s11356-022-22069-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 07/13/2022] [Indexed: 06/15/2023]
Abstract
This study describes the ability of a yeast strain, Aureobasidium pullulans KKUY0701 isolated from eutrophic lake to eliminate Cylindrospermopsis raciborskii and cylindrospermopsin (CYN) toxin. The anti-cyanobacterial activity of this yeast strain was evaluated by growing with living cells and filtrate of C. raciborskii. CYN bioremoval was assayed using living and heat-inactivated yeast cells. Both living cells and filtrate of this yeast strain were able to suppress the growth of C. raciborskii, with total cell death occurring at day 2 and day 3, respectively. Living and inactivated yeast cells, but not yeast filtrate, reduced CYN concentrations released into cyanobacterial cultures, indicating that this toxin might be removed from the culture medium via absorption onto yeast surface rather than enzymatic biodegradation. The adsorption experiments also confirmed the elimination of CYN by living and heat-inactivated yeast. Nevertheless, inactivated yeast exhibited higher capacity (K = 3.3) and intensity (n = 1.4) than living yeast (K = 1.9, n = 1) for CYN adsorption. The study suggests that this yeast strain could be employed for bioremediation of Cylindrospermopsis blooms in freshwaters. Additionally, heat-inactivated yeast biomass could be used in slow sand filters for elimination of CYN in drinking water treatment plants.
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Affiliation(s)
- Zakaria Mohamed
- Department of Botany and Microbiology, Faculty of Science, Sohag University, Sohag, 82524, Egypt.
| | - Saad Alamri
- Department of Biology, College of Science, King Khalid University, Abha, 61413, Saudi Arabia
| | - Mohamed Hashem
- Department of Biology, College of Science, King Khalid University, Abha, 61413, Saudi Arabia
- Botany and Microbiology Department, Facultyof Science, Assiut University, Assiut, 71516, Egypt
| | - Yasser Mostafa
- Department of Biology, College of Science, King Khalid University, Abha, 61413, Saudi Arabia
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6
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Shi Y, Shen A, Shao L, He P. Effects of Ginkgo biloba extract on growth, photosynthesis, and photosynthesis-related gene expression in Microcystis flos-aquae. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:87446-87455. [PMID: 35810242 DOI: 10.1007/s11356-022-21663-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 06/21/2022] [Indexed: 06/15/2023]
Abstract
The inhibitory effect of plants on algae offers a new and promising alternative method for controlling harmful algal blooms. Previous studies showed that anti-algal effects might be obvious from extracts of fallen leaves from terrestrial plants, which had great potential for cyanobacterial control in field tests. To investigate the anti-algal activities and main algicidal mechanisms of Ginkgo biloba fallen leaves extracts (GBE) on Microcystis flos-aquae, the cell density, photosynthetic fluorescence, and gene expression under different concentrations of GBE treatments were tested. GBE (3.00 g L-1) showed a strong inhibitory effect against M. flos-aquae with an IC50 (96h) of 0.79 g L-1. All the inhibition rates of maximal quantum yield (Fv/Fm), effective quantum yield (Fq'/Fm'), and maximal relative electron transfer rate (rETRmax) were more than 70% at 96 h at 3.00 g L-1 and more than 90% at 6.00 g L-1. Further results of gene expression of the core proteins of PSII (psbD), limiting enzyme in carbon assimilation (rbcL), and phycobilisome degradation protein (nblA) were downregulated after exposure. These findings emphasized that photosynthetic damage is one of the main toxic mechanisms of GBE on M. flos-aquae. When exposed to 12.00 g L-1 GBE, no significant influence on the death rate of zebrafish or photosynthetic activity of the three submerged plants was found. Therefore, appropriate use of GBE could control the expansion of M. flos-aquae colonies without potential risks to the ecological safety of aquatic environments, which means that GBE could actually be used to regulate cyanobacterial blooms in natural waters.
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Affiliation(s)
- Yuxin Shi
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, People's Republic of China
- Aquatic Ecology & Water Quality Management Group, Department of Environmental Sciences, Wageningen University, P.O. Box 47, 6700 AA, Wageningen, the Netherlands
| | - Anglu Shen
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, People's Republic of China
| | - Liu Shao
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, People's Republic of China.
- Marine Scientific Research Institute, Shanghai Ocean University, Shanghai, 201306, People's Republic of China.
- Water Environment & Ecology Engineering Research Center of Shanghai Institution of Higher Education, Shanghai, 201306, People's Republic of China.
| | - Peimin He
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, People's Republic of China
- Marine Scientific Research Institute, Shanghai Ocean University, Shanghai, 201306, People's Republic of China
- Water Environment & Ecology Engineering Research Center of Shanghai Institution of Higher Education, Shanghai, 201306, People's Republic of China
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7
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Chen YD, Zhao C, Zhu XY, Zhu Y, Tian RN. Multiple inhibitory effects of succinic acid on Microcystis aeruginosa: morphology, metabolomics, and gene expression. ENVIRONMENTAL TECHNOLOGY 2022; 43:3121-3130. [PMID: 33843481 DOI: 10.1080/09593330.2021.1916090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 04/02/2021] [Indexed: 06/12/2023]
Abstract
The cell membrane permeability, morphology, metabolomics, and gene expression of Microcystis aeruginosa under various concentrations of succinic acid (SA) were evaluated to clarify the mechanism of SA inhibition of M. aeruginosa. The results showed that SA caused intracellular protein and nucleic acid extravasation by increasing the cell membrane permeability. Scanning electron microscopy suggested that a high dose of SA (60 mg L-1) could damage the cell membrane and even cause lysis in some cells. Metabolomics result demonstrated that change in intracellular lipids content was the main reason for the increase of cell membrane permeability. In addition, SA could negatively affect amino acids metabolism, inhibit the biosynthesis of nucleotides, and interfere with the tricarboxylic acid (TCA) cycle of algal cells. Furthermore, SA also affected N assimilation and caused oxidative damage to Microcystis. In conclusion, SA inhibits the growth of M. aeruginosa through multisite action.
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Affiliation(s)
- Yi-Dong Chen
- College of Landscape Architecture, Nanjing Forestry University, Nanjing, People's Republic of China
| | - Chu Zhao
- College of Landscape Architecture, Nanjing Forestry University, Nanjing, People's Republic of China
| | - Xiao-Yu Zhu
- College of Landscape Architecture, Nanjing Forestry University, Nanjing, People's Republic of China
| | - Yuan Zhu
- College of Landscape Architecture, Nanjing Forestry University, Nanjing, People's Republic of China
| | - Ru-Nan Tian
- College of Landscape Architecture, Nanjing Forestry University, Nanjing, People's Republic of China
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8
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Li HY, Ye YD, Zhang QJ, Du CH, Li HM, Yin L. Effects of Cinnamomum camphora Leaves Extracts-Flocculants Composite Algaecide on Microcystis aeruginosa Growth and Microcystins Release. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2022; 109:409-416. [PMID: 35536319 DOI: 10.1007/s00128-022-03534-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 04/20/2022] [Indexed: 06/14/2023]
Abstract
In this study, a composite algaecide containing flocculants and Cinnamomum. camphora leaves extracts (CCCLE) were synthesized. The inhibition and flocculation effects on Microcystis aeruginosa (M. aeruginosa) were investigated, and the release of microcystin-LR (MC-LR) was determined. Results showed that the CCLEC composite algaecide was effective for the inhibition and flocculation of M. aeruginosa, and the optimal dose of CCLEC composite algaecide was 1.8%, which resulted in an algae inhibition ratio of 98.00% and a flocculation efficiency of 99.44% within 5 days of M. aeruginosa culturing. Besides, the total amount of MC-LR decreased by 80.04% on day 20 compared with the control group, while the concentration of intracellular MC-LR on day 5 was 36.69 μg L-1, which was related to a portion of cells underwent apoptosis-like cell death under CCLEC composite algaecide stress. The results of this study may improve our understanding of the M. aeruginosa control by CCCLE composite algaecide.
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Affiliation(s)
- Han-Yun Li
- Jinling High School, Nanjing, 210005, China
| | | | | | - Cun-Hao Du
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, MOE, School of Environment, Hohai University, Nanjing, 210098, China
| | - Hui-Ming Li
- School of Environment, Nanjing Normal University, Nanjing, 210023, China
| | - Li Yin
- School of Environment, Nanjing Normal University, Nanjing, 210023, China.
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9
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Wang F, Zhao W, Chen J, Zhou Y. Allelopathic inhibitory effect on the growth of microcystis aeruginosa by improved ultrasonic-cellulase extract of Vallisneria. CHEMOSPHERE 2022; 298:134245. [PMID: 35278451 DOI: 10.1016/j.chemosphere.2022.134245] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 02/16/2022] [Accepted: 03/04/2022] [Indexed: 06/14/2023]
Abstract
The unique and efficient characteristics of allelopathy in submerged plants make it an environmentally friendly method to control harmful algal blooms. Increased research focus has been placed on the improved allelochemical extraction methods of submerged plants because of their cost-utility relationships. In this study, the growth inhibition effect of Vallisneria extract on Microcystis aeruginosa (M. aeruginosa) cells through the combination of enzyme and ultrasonic-assisted extraction method was analyzed. By establishing a co-cultivation experiment, the growth indicators, photosynthetic system, and oxidative stress system of M. aeruginosa were determined. The reactive oxygen species (ROS) and superoxide dismutase (SOD) activity, as well as the catalase (CAT) and Malondialdehyde (MDA) levels of algal cells were found to have increased significantly after co-cultivation, which indicated that the Vallisneria ultrasonic-cellulase extract could induce oxidative stress in Microcystis aeruginosa cells. The Vallisneria extract could promote at low concentrations and inhibit at high concentrations on the growth of Microcystis aeruginosa. The effective suppression of growth of algae cells with the extract was observed at 5 g/L (fresh weight). The results showed that the Vallisneria ultrasonic-cellulase extract had a significant inhibitory effect on M. aeruginosa, making the effective ingredients a useful reference for algae inhibitors.
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Affiliation(s)
- Fan Wang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 311121, China.
| | - Wenjing Zhao
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 311121, China
| | - Jiaqi Chen
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 311121, China
| | - Yuhang Zhou
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 311121, China
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10
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Li J, Cao L, Guo Z. Joint effects and mechanisms of luteolin and kaempferol on toxigenic Microcystis growth-Comprehensive analysis on two isomers interaction in binary mixture. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 312:114904. [PMID: 35344874 DOI: 10.1016/j.jenvman.2022.114904] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 02/27/2022] [Accepted: 03/14/2022] [Indexed: 06/14/2023]
Abstract
Allelochemicals are widely accepted as promising algaecide to mitigate Microcystis-dominated cyanobacterial blooms (MCBs). Allelopathic algicidal effect of single luteolin or kaempferol against Microcystis had been confirmed, but their joint effect against Microcystis was unclear. This study comprehensively explored time-dependent joint effect and mechanisms of luteolin and kaempferol on Microcystis growth during 14 day-test. The 50%-inhibitory threshold of their mixture (IC50 mix) was verified as 4.872 and 5.211 mg/L at equitoxic ratio, and 5.167 and 4.487 mg/L at equivalent ratio, respectively, on day 8 and 14. Using toxicity unit, isobologram and predictive models, results revealed that luteolin and kaempferol at equivalent ratio interacted additively at lower, median and higher dosages, while at equitoxic ratio interacted additively at lower dosage but synergistically at median and higher dosages in Microcystis on day 8 and 14, implying that their equitoxic mixture posed better algicidal effect against Microcystis. Various dosages of equitoxic mixture concurrently decreased aqueous and total microcystins (MCs) contents along test. Thus, luteolin and kaempferol could be jointly applied as high-efficacy and eco-safe algaecide with declined MCs pollution risks. As mixture dosage elevated, more strongly weakened cellular MCs retention and inhibited cellular photosynthetic pigments content during late stage, as well as decreased aqueous MCs content long test, jointly explained increasing growth inhibition ratio with rising mixture dosage. Yet, cell damage was gradually repaired due to early stimulated antioxidant defense at each mixture dosage, thus cell damage might not be a major reason for inhibited growth under mixture stress. This study provided novel insights and guidance to coupled application of luteolin and kamepferol for mitigating MCBs and decreasing MCs pollution risks.
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Affiliation(s)
- Jieming Li
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China; Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing, 100193, China.
| | - Linrong Cao
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China; Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing, 100193, China
| | - Zhonghui Guo
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China; Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing, 100193, China
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11
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Mohamed Z, Alamri S, Hashem M. Simultaneous biodegradation of harmful Cylindrospermopsis raciborskii and cylindrospermopsin toxin in batch culture by single Bacillus strain. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:5153-5161. [PMID: 34417702 DOI: 10.1007/s11356-021-16062-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 08/16/2021] [Indexed: 06/13/2023]
Abstract
This study investigates the capability of a Bacillus flexus strain isolated from decayed cyanobacterial blooms for the bioremediation of Cylindrospermopsis raciborskii and cylindrospermopsin (CYN) toxin. The algicidal activity of this strain was tested by co-cultivation with C. raciborskii cultures. CYN biodegradation was investigated in the presence of living and heat-inactivated bacterial cells or bacterial filtrate. Living bacterial cells inhibited C. raciborskii growth after 2 days of incubation with complete cell death at day 5. Bacterial filtrate caused a rapid reduction in C. raciborskii growth at the first day, with complete cell lysis at day 3. Only living cells of SSZ01 caused reduction in CYN released into the medium during the bacterial decay of C. raciborskii cells. The biodegradation rate of CYN by SSZ01 relied on initial toxin concentrations. The highest rate (42 μg CYN L-1 day-1) was obtained at the higher initial concentration (300 μg L-1), and the lowest (4μg CYN L-1 day-1) was at lower concentration (50 μg L-1). These results suggest that this bacterial strain could be employed to bioremediate cyanobacterial blooms in freshwaters. Also, the application of this bacterium in slow sand filters would give possibilities for degradation and bioremediation of cyanotoxins in drinking water treatment plants.
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Affiliation(s)
- Zakaria Mohamed
- Faculty of Science, Department of Botany and Microbiology, Sohag University, Sohag, 82524, Egypt.
| | - Saad Alamri
- Department of Biology, King Khalid University, College of Science, Abha, 61413, Saudi Arabia
| | - Mohamed Hashem
- Department of Biology, King Khalid University, College of Science, Abha, 61413, Saudi Arabia
- Faculty of Science, Botany and Microbiology Department, Assiut University, Assiut, 71516, Egypt
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12
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Wang J, Kong L, Li Y, Zhang J, Shi Y, Xie S, Li B. Effect of protopine exposure on the physiology and gene expression in the bloom-forming cyanobacterium Microcystis aeruginosa. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:64666-64673. [PMID: 34312760 DOI: 10.1007/s11356-021-15626-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 07/20/2021] [Indexed: 06/13/2023]
Abstract
Environment-friendly sound measures with high algal growth inhibition efficiency are required to control and eliminate CyanoHABs. This study examined the effects of protopine on growth, gene expression, and antioxidant system of the M. aeruginosa TY001 and explored possible damage mechanism. The results revealed that higher concentrations of protopine seriously inhibited the growth of M. aeruginosa. Quantitative real-time PCR analysis showed downregulated expression of stress response genes (prx and fabZ), and DNA repair gene (recA) on days 3 and 5. The activities of antioxidant enzymes were also decreased markedly, including superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD). Additionally, protopine stress can significantly increase the malondialdehyde (MDA) level in cells. In conclusion, oxidative damage and DNA damage are the main mechanisms of protopine inhibition on M. aeruginosa TY001. Our studies provide evidence that alkaloid compounds such as protopine may have a potential use value as components of aquatic management strategies.
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Affiliation(s)
- Jie Wang
- Department of Biology, Taiyuan Normal University, Jinzhong, 030619, China
| | - Lingjia Kong
- Department of Biology, Taiyuan Normal University, Jinzhong, 030619, China
| | - Yanhui Li
- Department of Biology, Taiyuan Normal University, Jinzhong, 030619, China
| | - Jiazhen Zhang
- Department of Biology, Taiyuan Normal University, Jinzhong, 030619, China
| | - Ying Shi
- Department of Biology, Taiyuan Normal University, Jinzhong, 030619, China.
| | - Shulian Xie
- School of Life Science, Shanxi University, Taiyuan, 030006, China
| | - Bo Li
- Geographical Science College, Taiyuan Normal University, Jinzhong, 030619, China
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Luo Y, Yang Y, Hou W, Fu J. Novel Algicides against Bloom-Forming Cyanobacteria from Allelochemicals: Design, Synthesis, Bioassay, and 3D-QSAR Study. BIOLOGY 2021; 10:biology10111145. [PMID: 34827137 PMCID: PMC8614697 DOI: 10.3390/biology10111145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/03/2021] [Accepted: 11/04/2021] [Indexed: 11/22/2022]
Abstract
Simple Summary Due to the frequent outbreaks of cyanobacteria bloom worldwide, research on novel algicides has attracted more and more attention. At present, allelochemicals have been reported as promising natural algicides. However, current studies mainly focus on the parent compounds, and the structural modification of original allelochemicals has been rarely involved. In this study, phenolic acid derivatives were innovatively synthesized as potential algicides, and lead compounds with excellent activity were found. For instance, upon the algicidal activity on Aphanizomenon flos-aquae, the EC50 of the best active compound 18 reached 0.63 µM (0.17 mg/L), while the EC50 values of previously reported allelochemicals have been basically at the mg/L level. The result indicates that the algicides reported in this study are more efficient at inhibiting cyanobacteria with lower effective concentrations than most previously reported compounds. Moreover, 3D-QSAR models were constructed and provided a theoretical guidance for further structure optimization of compounds to achieve better algicidal activity. Abstract Cyanobacteria bloom caused by water eutrophication has threatened human health and become a global environmental problem. To develop green algicides with strong specificity and high efficiency, three series of ester and amide derivatives from parent allelochemicals of caffeic acid (CA), cinnamic acid (CIA), and 3-hydroxyl-2-naphthoic acid (HNA) were designed and synthesized. Their inhibitory effects on the growth of five harmful cyanobacterial species, Microcystis aeruginosa (M. aeruginosa), Microcystis wesenbergii (M. wesenbergii), Microcystis flos-aquae (M. flos-aquae), Aphanizomenon flos-aquae (Ap. flos-aquae), and Anabaena flos-aquae (An. flos-aquae), were evaluated. The results revealed that CIA esters synthesized by cinnamic acid and fatty alcohols showed the best inhibition effect, with EC50 values ranging from 0.63 to >100 µM. Moreover, some CIA esters exhibited a good selectivity in inhibiting cyanobacteria. For example, the inhibitory activity of naphthalen-2-yl cinnamate was much stronger on Ap. flos-aquae (EC50 = 0.63 µM) than other species (EC50 > 10 µM). Three-dimensional quantitative structure–activity relationship (3D-QSAR) analysis was performed and the results showed that the steric hindrance of the compounds influenced the algicidal activity. Further mechanism study found that the inhibition of CIA esters on the growth of M. aeruginosa might be related to the accumulation of malondialdehyde (MDA).
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Affiliation(s)
- Yin Luo
- Department of Biomedical Engineering, School of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China;
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yushun Yang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210093, China;
| | - Wenguang Hou
- Department of Biomedical Engineering, School of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China;
- Correspondence: (W.H.); (J.F.); Tel.: +86-27-8779-2101 (J.F.)
| | - Jie Fu
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
- Correspondence: (W.H.); (J.F.); Tel.: +86-27-8779-2101 (J.F.)
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14
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Chen YD, Zhu Y, Xin JP, Zhao C, Tian RN. Succinic acid inhibits photosynthesis of Microcystis aeruginosa via damaging PSII oxygen-evolving complex and reaction center. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:58470-58479. [PMID: 34114144 DOI: 10.1007/s11356-021-14811-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Accepted: 06/07/2021] [Indexed: 06/12/2023]
Abstract
To elucidate the mechanism of succinic acid (SA) inhibition of Microcystis aeruginosa, the chlorophyll fluorescence transients, photosynthesis, photosynthetic electron transport activity, and gene expression of M. aeruginosa were evaluated under various doses of SA. The results demonstrated that, after treatment with 60 mg L-1 SA for 1 h, the chlorophyll fluorescence transients and related parameters changed significantly, indicating that the function and structure of photosynthetic apparatuses of Microcystis were seriously damaged. The initial quantum efficiency α, maximum net photosynthetic rate Pnmax, dark respiration rate Rd, and gross photosynthetic rate decreased to 57%, 49%, 49%, and 46%, respectively, relative to the control. Furthermore, photosystem II (PSII) activity (H2O→p-BQ) and the electron transport activity of H2O→MV and DPC→MV significantly decreased. Real-time PCR analysis revealed that, following incubation with 60 mg L-1 SA for 24 h, the expression level of core protein genes (psbA, psaB, psbD, and psbO) of the photosynthesis centers photosystem I (PSI) and PSII decreased significantly. However, the transcription of gene nblA encoding phycobilisome degradation protein was elevated. The downregulation of the rbcL gene, which encodes the large subunit of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco), resulted in the suppression of CO2 fixation and assimilation. High concentration (60 mg L-1) of SA resulted in damage to oxygen-evolving complex (OEC) and reaction center of PSII, blocking photosynthetic electron transport, thereby lowering the rate photosynthesis and inhibiting the growth of Microcystis. We concluded that inhibition of photosynthesis is an important mechanism of SA inhibition in M. aeruginosa.
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Affiliation(s)
- Yi-Dong Chen
- College of Landscape Architecture, Nanjing Forestry University, Nanjing, 210037, Jiangsu, China
| | - Yuan Zhu
- College of Landscape Architecture, Nanjing Forestry University, Nanjing, 210037, Jiangsu, China
| | - Jian-Pan Xin
- College of Landscape Architecture, Nanjing Forestry University, Nanjing, 210037, Jiangsu, China
| | - Chu Zhao
- College of Landscape Architecture, Nanjing Forestry University, Nanjing, 210037, Jiangsu, China
| | - Ru-Nan Tian
- College of Landscape Architecture, Nanjing Forestry University, Nanjing, 210037, Jiangsu, China.
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15
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Lourenção A, Mecina GF, Cordeiro-Araújo MK, Bittencourt-Oliveira MC, Chia MA, Bronzel-Júnior JL, Granero FO, Silva LP, da Silva RMG. Characterization of allelochemicals from Pistia stratiotes extracts and their effects on the growth and physiology of Microcystis aeruginosa. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:57248-57259. [PMID: 34086172 DOI: 10.1007/s11356-021-14658-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 05/27/2021] [Indexed: 06/12/2023]
Abstract
Due to the public and environmental health impact of cyanotoxins, investigations have been focused on finding environmental friendly algaecides from aquatic plants. The present study had the objective to evaluate the population control and physiological response of Microcystis aeruginosa (Kützing) Kützing (strain BCCUSP232) exposed to Pistia stratiotes L. extracts. Aqueous and ethanolic extracts of P. stratiotes at different concentrations (10, 25, and 50 mg L-1) were submitted to M. aeruginosa and reduced significantly (p<0.05) the cyanobacterium cell density. The ethanolic extract presented the greatest growth inhibition of the strain at the highest concentration. During exposure to P. stratiotes extracts, intracellular hydrogen peroxide levels, malondialdehyde content, and antioxidant enzymes (peroxidase, catalase, and glutathione S-transferase) activities increased in M. aeruginosa, while total protein concentration decreased when compared to the control group. Superoxide dismutase (SOD) activities presented a sharp decline, suggesting superoxide radical and peroxide accumulation. This implied that SOD was a target for bioactive substance(s) from aqueous and ethanolic extracts of P. stratiotes. Phytochemical screening of the extracts revealed that the ethanolic extract presented 93.36 mg gallic acid equivalent (GAE) per gram dry weight (g-1 DW) total polyphenols and 217.33 mg rutin equivalent (RE) per gram dry weight total flavonoids, and for the aqueous extract, 5.19 mg GAE g-1 DW total polyphenols and 11.02 mg RE g-1 DW total flavonoids were detected. Gas chromatography (GC)/mass spectrometry (MS) analyses of the ethanolic and aqueous extracts presented palmitic acid ethyl ester as major allelochemical. In view of these results, it can be concluded that P. stratiotes showed potential in controlling M. aeruginosa populations.
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Affiliation(s)
- Anderson Lourenção
- Institute of Chemistry, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Gustavo F Mecina
- Institute of Chemistry, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Micheline K Cordeiro-Araújo
- Department of Biological Sciences, Luiz de Queiroz College of Agriculture, University of São Paulo (USP), Piracicaba, São Paulo, Brazil
| | - Maria C Bittencourt-Oliveira
- Department of Biological Sciences, Luiz de Queiroz College of Agriculture, University of São Paulo (USP), Piracicaba, São Paulo, Brazil
| | - Mathias A Chia
- Department of Botany, Ahmadu Bello University, Zaria, Nigeria
| | - João L Bronzel-Júnior
- Institute of Chemistry, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Filipe O Granero
- Institute of Chemistry, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - Luciana P Silva
- Fundação Educacional do Município de Assis (FEMA), Assis, São Paulo, Brazil
| | - Regildo M G da Silva
- Institute of Chemistry, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil.
- Laboratory of Herbal Medicine and Natural Products, Department of Biotechnology, School of Sciences, Humanities and Languages, São Paulo State University (UNESP), Dom Antonio Avenue 2100, 19806-900, Assis, São Paulo, Brazil.
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16
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Han J, Yin Y, Xu D, Wang H, Yu S, Han D, Niu Y, Xu R. Growth inhibition and oxidative damage of Microcystis aeruginosa induced by aqueous extract of different submerged macrophytes. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:53224-53238. [PMID: 34023990 DOI: 10.1007/s11356-021-14459-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 05/13/2021] [Indexed: 06/12/2023]
Abstract
With the increasing eutrophication of the aquatic environments, cyanobacteria blooms caused certain damage to the animals and plants in the aquatic environments. In this experiment, two species were selected from six species of submerged macrophytes, the experimental conditions were changed to achieve the best inhibitory effect on Microcystis aeruginosa, and oxidative damage analysis was carried out. The experiment results demonstrated that the inhibition rate of Vallisneria natans and Ceratophyllum demersum was nearly 100% at the concentration of 3 g/L after 15 days of anaerobic soaking extract. In addition, the longer the soaking time of the two submerged macrophytes, the weaker the photosynthesis effect, and the lower the chlorophyll fluorescence parameters, the more obvious the inhibition effect on M. aeruginosa. Lipid peroxidation injury of M. aeruginosa could be reflected by malondialdehyde (MDA) concentration. The MDA concentration in the experimental group was significantly higher than the control group. Results showed that V. natans and C. demersum could induce oxidative damage in M. aeruginosa. It was also observed that the secondary metabolites produced by V. natans were mainly fatty acids (e.g., the oxidative acid was 6.92 w/%, and the successful acid was 9.85 w/%) which inhibited M. aeruginosa in gas chromatography-mass spectrometry (GC-MS). The main secondary metabolites in C. demersum were hydroxyl acids (e.g., the 4-hydroxy-3-methoxyphenylacetic acid was 24.33 w/%), which could inhibit the algae through allelopathy. This study provided reference for submerged macrophytes to inhibit M. aeruginosa under different conditions.
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Affiliation(s)
- Jinlong Han
- College of Civil and Architectural Engineering, North China University of Science and Technology, Tangshan, 063000, People's Republic of China
| | - Yue Yin
- College of Civil and Architectural Engineering, North China University of Science and Technology, Tangshan, 063000, People's Republic of China
- North China University of Science and Technology Affiliated Hospital, Tangshan, 063000, People's Republic of China
| | - Duo Xu
- College of Civil and Architectural Engineering, North China University of Science and Technology, Tangshan, 063000, People's Republic of China
| | - Hao Wang
- College of Civil and Architectural Engineering, North China University of Science and Technology, Tangshan, 063000, People's Republic of China.
| | - Shuang Yu
- College of Civil and Architectural Engineering, North China University of Science and Technology, Tangshan, 063000, People's Republic of China
| | - Dongyun Han
- College of Chemical Engineering, North China University of Science and Technology, Tangshan, 063000, People's Republic of China
| | - Yunxia Niu
- College of Civil and Architectural Engineering, North China University of Science and Technology, Tangshan, 063000, People's Republic of China
| | - Runyu Xu
- College of Civil and Architectural Engineering, North China University of Science and Technology, Tangshan, 063000, People's Republic of China
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17
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Tazart Z, Manganelli M, Scardala S, Buratti FM, Nigro Di Gregorio F, Douma M, Mouhri K, Testai E, Loudiki M. Remediation Strategies to Control Toxic Cyanobacterial Blooms: Effects of Macrophyte Aqueous Extracts on Microcystis aeruginosa (Growth, Toxin Production and Oxidative Stress Response) and on Bacterial Ectoenzymatic Activities. Microorganisms 2021; 9:microorganisms9081782. [PMID: 34442861 PMCID: PMC8400474 DOI: 10.3390/microorganisms9081782] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 08/11/2021] [Accepted: 08/12/2021] [Indexed: 11/16/2022] Open
Abstract
Increasing toxic cyanobacterial blooms in freshwater demand environmentally friendly solutions to control their growth and toxicity, especially in arid countries, where most drinking water is produced from surface reservoirs. We tested the effects of macrophyte allelochemicals on Microcystis aeruginosa and on the fundamental role of bacteria in nutrient recycling. The effects of Ranunculus aquatilis aqueous extract, the most bioactive of four Moroccan macrophyte extracts, were tested in batch systems on M. aeruginosa growth, toxin production and oxidative stress response and on the ectoenzymatic activity associated with the bacterial community. M. aeruginosa density was reduced by 82.18%, and a significant increase in oxidative stress markers was evidenced in cyanobacterial cells. Microcystin concentration significantly decreased, and they were detected only intracellularly, an important aspect in managing toxic blooms. R. aquatilis extract had no negative effects on associated bacteria. These results confirm a promising use of macrophyte extracts, but they cannot be generalized. The use of the extract on other toxic strains, such as Planktothrix rubescens, Raphidiopsis raciborskii and Chrysosporum ovalisporum, caused a reduction in growth rate but not in cyanotoxin content, increasing toxicity. The need to assess species-specific cyanobacteria responses to verify the efficacy and safety of the extracts for human health and the environment is highlighted.
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Affiliation(s)
- Zakaria Tazart
- Istituto Superiore di Sanità, Environment & Health Department, Viale Regina Elena, 299, 00161 Rome, Italy; (Z.T.); (S.S.); (F.M.B.); (F.N.D.G.); (E.T.)
- Water, Biodiversity and Climate Change Laboratory, Phycology, Biotechnology and Environmental Toxicology Research Unit, Faculty of Sciences Semlalia, Cadi Ayyad University, Av. Prince My Abdellah P.O. Box 2390, Marrakech 40000, Morocco; (K.M.); (M.L.)
| | - Maura Manganelli
- Istituto Superiore di Sanità, Environment & Health Department, Viale Regina Elena, 299, 00161 Rome, Italy; (Z.T.); (S.S.); (F.M.B.); (F.N.D.G.); (E.T.)
- Correspondence:
| | - Simona Scardala
- Istituto Superiore di Sanità, Environment & Health Department, Viale Regina Elena, 299, 00161 Rome, Italy; (Z.T.); (S.S.); (F.M.B.); (F.N.D.G.); (E.T.)
| | - Franca Maria Buratti
- Istituto Superiore di Sanità, Environment & Health Department, Viale Regina Elena, 299, 00161 Rome, Italy; (Z.T.); (S.S.); (F.M.B.); (F.N.D.G.); (E.T.)
| | - Federica Nigro Di Gregorio
- Istituto Superiore di Sanità, Environment & Health Department, Viale Regina Elena, 299, 00161 Rome, Italy; (Z.T.); (S.S.); (F.M.B.); (F.N.D.G.); (E.T.)
| | - Mountasser Douma
- Environmental Microbiology and Toxicology Research Unit, Polydisciplinary Faculty of Khouribga (FPK), Sultan Moulay Slimane University, Beni Mellal 23000, Morocco;
| | - Khadija Mouhri
- Water, Biodiversity and Climate Change Laboratory, Phycology, Biotechnology and Environmental Toxicology Research Unit, Faculty of Sciences Semlalia, Cadi Ayyad University, Av. Prince My Abdellah P.O. Box 2390, Marrakech 40000, Morocco; (K.M.); (M.L.)
| | - Emanuela Testai
- Istituto Superiore di Sanità, Environment & Health Department, Viale Regina Elena, 299, 00161 Rome, Italy; (Z.T.); (S.S.); (F.M.B.); (F.N.D.G.); (E.T.)
| | - Mohammed Loudiki
- Water, Biodiversity and Climate Change Laboratory, Phycology, Biotechnology and Environmental Toxicology Research Unit, Faculty of Sciences Semlalia, Cadi Ayyad University, Av. Prince My Abdellah P.O. Box 2390, Marrakech 40000, Morocco; (K.M.); (M.L.)
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Mohamed ZA, Hashem M, Alamri S, Campos A, Vasconcelos V. Fungal biodegradation and removal of cyanobacteria and microcystins: potential applications and research needs. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:37041-37050. [PMID: 34053035 DOI: 10.1007/s11356-021-14623-w] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 05/25/2021] [Indexed: 05/26/2023]
Abstract
Harmful cyanobacterial blooms (HCB) have severe impacts on marine and freshwater systems worldwide. They cause oxygen depletion and produce potent cyanotoxins that have detrimental effects on human and environmental health and deteriorate the water quality. Biological treatment of the water for control of cyanobacterial blooms and removal of cyanotoxins can be a more economical and environment-friendly way, as they do not result in production of undesirable by-products. Most biological treatments of cyanobacteria and cyanotoxins have concentrated largely on bacteria, with little attention paid to algicidal fungi. Therefore, this review aims to provide an overview of the current status and the main progresses achieved in fungal biodegradation of HCB and cyanotoxin research. The available data revealed that 15 fungal species had high lytic activity against cyanobacteria, and 6 species were capable of degrading microcystins (MCs). Some fungal species (e.g., Aurobasidium pullulans and Trichoderma citrinoviride) have been identified to selectively inhibit the growth of cyanobacteria rather than beneficial species of other algal groups. Interestingly, some fungal strains (Trichaptum abietinum, Trichoderma citrinoviride) exhibited di-functional trait, being efficient in lysing cyanobacteria and degrading MCs released from the cells after decay. Beyond a comprehensive review of algicidal and toxin-degrading activities of fungi, this paper also identifies and prioritizes research gaps in algicidal fungi. The review also gives insights to the potential applications of algicidal fungi for removal of cyanobacterial blooms and their cyanotoxins from the aquatic environment.
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Affiliation(s)
- Zakaria A Mohamed
- Department of Botany, Faculty of Science, Sohag University, Sohag, 82524, Egypt.
| | - Mohamed Hashem
- College of Science, Department of Biology, King Khalid University, Abha, 61413, Saudi Arabia
- Faculty of Science, Botany and Microbiology Department, Assiut University, Assiut, 71516, Egypt
| | - Saad Alamri
- College of Science, Department of Biology, King Khalid University, Abha, 61413, Saudi Arabia
| | - Alexandre Campos
- CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, Terminal de Cruzeiros Do Porto de Leixões, Av. General Norton de Matos, s/n, 4450-208, Matosinhos, Portugal
| | - Vitor Vasconcelos
- CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, Terminal de Cruzeiros Do Porto de Leixões, Av. General Norton de Matos, s/n, 4450-208, Matosinhos, Portugal
- Departament of Biology, Faculty of Sciences, University of Porto, Rua Do Campo Alegre, 4169-007, Porto, Portugal
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Zheng X, Yuan Y, Li Y, Liu X, Wang X, Fan Z. Polystyrene nanoplastics affect growth and microcystin production of Microcystis aeruginosa. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:13394-13403. [PMID: 33180284 DOI: 10.1007/s11356-020-10388-w] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Accepted: 08/03/2020] [Indexed: 06/11/2023]
Abstract
Nanoplastics are widely distributed in freshwater environments, but few studies have addressed their effects on freshwater algae, especially on harmful algae. In this study, the effects of polystyrene (PS) nanoplastics on Microcystis aeruginosa (M. aeruginosa) growth, as well as microcystin (MC) production and release, were investigated over the whole growth period. The results show that PS nanoplastics caused a dose-dependent inhibitory effect on M. aeruginosa growth and a dose-dependent increase in the aggregation rate peaking at 60.16% and 46.34%, respectively, when the PS nanoplastic concentration was 100 mg/L. This caused significant growth of M. aeruginosa with a specific growth rate up to 0.41 d-1 (50 mg/L PS nanoplastics). After a brief period of rapid growth, the tested algal cells steadily grew. In addition, the increase in PS nanoplastics concentration promoted the production and release of MC. When the PS nanoplastic concentration was 100 mg/L, the content of the intracellular (intra-) and extracellular (extra-) MC increased to 199.1 and 166.5 μg/L, respectively, on day 26, which was 31.4% and 31.1% higher, respectively, than the control. Our results provide insights into the action mechanism of nanoplastics on harmful algae and the potential risks to freshwater environments.
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Affiliation(s)
- Xiaowei Zheng
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China
| | - Yuan Yuan
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China
| | - Yanyao Li
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China
| | - Xianglin Liu
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China
| | - Xiangrong Wang
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China.
| | - Zhengqiu Fan
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China.
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Zerrifi SEA, Redouane EM, Mugani R, Ribeiro I, de Fátima Carvalho M, Campos A, Barakate M, Vasconcelos V, Oudra B, El Khalloufi F. Moroccan actinobacteria with promising activity against toxic cyanobacteria Microcystis aeruginosa. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:235-245. [PMID: 32808126 DOI: 10.1007/s11356-020-10439-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 08/06/2020] [Indexed: 06/11/2023]
Abstract
In recent decades, harmful cyanobacterial blooms (HCBs) have become a severe hazard for human health mainly in drinking water resources and are responsible for serious ecological disturbances in freshwater ecosystems. The present study aims to explore the potential of actinobacteria isolated from sediment samples collected from Moroccan salt river to control HCBs mainly through Microcystis aeruginosa lysis. In order to investigate the possible anti-cyanobacterial response mechanisms, the antioxidant enzyme activities of M. aeruginosa cells were analysed. Anti-cyanobacterial activity was tested using the agar cylinder method against the toxic cyanobacteria Microcystis aeruginosa. Amongst the twenty-three isolates tested, only one showed promising anti-cyanobacterial activities with inhibition zone (ZI) equal to 22.00 mm, minimum inhibitory concentration (MIC) equal to 19.53 mg/L and minimum bactericidal concentration MBC equal to 39.06 mg/L. Phylogenetic analysis of the near-complete 16S rRNA gene sequence indicated that the strain DS1R1 belongs to the genus Streptomyces and has the highest similarity (100%) to Streptomyces sp. Indeed, M. aeruginosa growth, chlorophyll-a and protein content were significantly reduced by Streptomyces sp. DS1R1 extract. Superoxide dismutase (SOD), catalase (CAT) and malondialdehyde (MDA) were significantly elevated after treatment with Streptomyces sp. DS1R1 extract. These experimental findings provided insights in the development of a new eco-friendly procedure based on the use of actinobacteria for toxic cyanobacterial bloom bio-control.
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Affiliation(s)
- Soukaina El Amrani Zerrifi
- Water, Biodiversity and Climate Change Laboratory. Phycology, Biotechnology and Environmental Toxicology Research Unit, Faculty of Sciences Semlalia Marrakech, Cadi Ayyad University, Av. Prince My Abdellah, P.O. Box 2390, 40000, Marrakech, Morocco
| | - El Mahdi Redouane
- Water, Biodiversity and Climate Change Laboratory. Phycology, Biotechnology and Environmental Toxicology Research Unit, Faculty of Sciences Semlalia Marrakech, Cadi Ayyad University, Av. Prince My Abdellah, P.O. Box 2390, 40000, Marrakech, Morocco
| | - Richard Mugani
- Water, Biodiversity and Climate Change Laboratory. Phycology, Biotechnology and Environmental Toxicology Research Unit, Faculty of Sciences Semlalia Marrakech, Cadi Ayyad University, Av. Prince My Abdellah, P.O. Box 2390, 40000, Marrakech, Morocco
| | - Inês Ribeiro
- CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos, s/n, 4450-208, Matosinhos, Portugal
| | - Maria de Fátima Carvalho
- CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos, s/n, 4450-208, Matosinhos, Portugal
| | - Alexandre Campos
- CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos, s/n, 4450-208, Matosinhos, Portugal
| | - Mustapha Barakate
- Laboratory of Microbial Biotechnologies, Agrosciences and Environment, Faculty of Science Semlalia Marrakech, Cadi Ayyad University, Av. Prince My Abdellah, P.O. Box 2390, 40000, Marrakech, Morocco
| | - Vitor Vasconcelos
- CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos, s/n, 4450-208, Matosinhos, Portugal.
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007, Porto, Portugal.
| | - Brahim Oudra
- Water, Biodiversity and Climate Change Laboratory. Phycology, Biotechnology and Environmental Toxicology Research Unit, Faculty of Sciences Semlalia Marrakech, Cadi Ayyad University, Av. Prince My Abdellah, P.O. Box 2390, 40000, Marrakech, Morocco
| | - Fatima El Khalloufi
- Laboratory of Chemistry, Modeling and Environmental Sciences, Polydisciplinary Faculty of Khouribga, Sultan Moulay Slimane University of Beni Mellal, B.P. 145, 25000, Khouribga, Morocco
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21
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Shi Y, Shen A, Tan M, He P, Shao L. The effect of plant extracts on growth and photosynthetic fluorescence characteristics of Microcystis flos-aquae. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 82:1102-1110. [PMID: 33055400 DOI: 10.2166/wst.2020.312] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The cyanobacteria Microcystis flos-aquae can cause harmful algal blooms in waterbodies, which threaten the normal functioning of aquatic ecosystems and human health. Some plant extracts are considered as promising algaecides. In this study, the effects of ten plant extracts (Cinnamomum camphora, Ginkgo biloba, Firmiana platanifolia, Salix babylonica, Euphorbia humifusa, Erigeron annuus, Solidago canadensis, Alternanthera philoxeroides, Thalia dealbata and Eichhornia crassipes) against M. flos-aquae were investigated. The results showed that all ten plant extracts had a significant inhibitory effect on M. flos-aquae growth after 96 h (P < 0.01). The inhibition rates of S. babylonica, E. humifusa, S. canadensis and A. philoxeroides were over 70.00%. Furthermore, the E. humifusa extract had the best inhibitory effect on the photosynthesis of M. flos-aquae, with the effective quantum yield of photosystem II and maximal relative electron transport rate decreasing by 97.50% and 97.00%, respectively, after 96 h. Additionally, the E. humifusa extract was found to be non-toxic to non-target organisms such as Brachydanio rerio and Vallisneria spiralis within 96 h. This study contributes to the existing knowledge and data of freshwater cyanobacteria blooms, and provides insights for their control and the restoration of freshwater systems affected by cyanobacteria blooms.
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Affiliation(s)
- Yuxin Shi
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China
| | - Anglu Shen
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China
| | - Meng Tan
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China
| | - Peimin He
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China; Marine Scientific Research Institute, Shanghai Ocean University, Shanghai 201306, China and Water Environment and Ecology Engineering Research Center of Shanghai Institution of Higher Education, Shanghai 201306, China E-mail:
| | - Liu Shao
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China; Marine Scientific Research Institute, Shanghai Ocean University, Shanghai 201306, China and Water Environment and Ecology Engineering Research Center of Shanghai Institution of Higher Education, Shanghai 201306, China E-mail:
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22
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El Amrani Zerrifi S, El Khalloufi F, Mugani R, El Mahdi R, Kasrati A, Soulaimani B, Barros L, Ferreira ICFR, Amaral JS, Finimundy TC, Abbad A, Oudra B, Campos A, Vasconcelos V. Seaweed Essential Oils as a New Source of Bioactive Compounds for Cyanobacteria Growth Control: Innovative Ecological Biocontrol Approach. Toxins (Basel) 2020; 12:E527. [PMID: 32824610 PMCID: PMC7472222 DOI: 10.3390/toxins12080527] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 08/12/2020] [Accepted: 08/14/2020] [Indexed: 01/10/2023] Open
Abstract
The application of natural compounds extracted from seaweeds is a promising eco-friendly alternative solution for harmful algae control in aquatic ecosystems. In the present study, the anti-cyanobacterial activity of three Moroccan marine macroalgae essential oils (EOs) was tested and evaluated on unicellular Microcystis aeruginosa cyanobacterium. Additionally, the possible anti-cyanobacterial response mechanisms were investigated by analyzing the antioxidant enzyme activities of M. aeruginosa cells. The results of EOs GC-MS analyses revealed a complex chemical composition, allowing the identification of 91 constituents. Palmitic acid, palmitoleic acid, and eicosapentaenoic acid were the most predominant compounds in Cystoseira tamariscifolia, Sargassum muticum, and Ulva lactuca EOs, respectively. The highest anti-cyanobacterial activity was recorded for Cystoseira tamariscifolia EO (ZI = 46.33 mm, MIC = 7.81 μg mL-1, and MBC = 15.62 μg mL-1). The growth, chlorophyll-a and protein content of the tested cyanobacteria were significantly reduced by C. tamariscifolia EO at both used concentrations (inhibition rate >67% during the 6 days test period in liquid media). Furthermore, oxidative stress caused by C. tamariscifolia EO on cyanobacterium cells showed an increase of the activities of superoxide dismutase (SOD) and catalase (CAT), and malondialdehyde (MDA) concentration was significantly elevated after 2 days of exposure. Overall, these experimental findings can open a promising new natural pathway based on the use of seaweed essential oils to the fight against potent toxic harmful cyanobacterial blooms (HCBs).
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Affiliation(s)
- Soukaina El Amrani Zerrifi
- Water, Biodiversity and Climate Change Laboratory, Phycology, Biotechnology and Environmental Toxicology Research Unit, Faculty of Sciences Semlalia Marrakech, Cadi Ayyad University, P.O. Box 2390, 40000 Marrakech, Morocco; (S.E.A.Z.); (R.M.); (R.E.M.); (B.O.)
| | - Fatima El Khalloufi
- Laboratory of Chemistry, Modeling and Environmental Sciences, Polydisciplinary Faculty of Khouribga, Sultan Moulay Slimane University of Beni Mellal, P.B. 145, 25000 Khouribga, Morocco;
| | - Richard Mugani
- Water, Biodiversity and Climate Change Laboratory, Phycology, Biotechnology and Environmental Toxicology Research Unit, Faculty of Sciences Semlalia Marrakech, Cadi Ayyad University, P.O. Box 2390, 40000 Marrakech, Morocco; (S.E.A.Z.); (R.M.); (R.E.M.); (B.O.)
| | - Redouane El Mahdi
- Water, Biodiversity and Climate Change Laboratory, Phycology, Biotechnology and Environmental Toxicology Research Unit, Faculty of Sciences Semlalia Marrakech, Cadi Ayyad University, P.O. Box 2390, 40000 Marrakech, Morocco; (S.E.A.Z.); (R.M.); (R.E.M.); (B.O.)
| | - Ayoub Kasrati
- Department of Health and Agro-Industry Engineering, High School of Engineering and Innovation of Marrakesh (E2IM), Private University of Marrakesh (UPM), 42312 Marrakech, Morocco;
- Laboratory of Microbial Biotechnologies, Agrosciences and Environment, Faculty of Science Semlalia Marrakech, Cadi Ayyad University, P.O. Box 2390, 40000 Marrakech, Morocco; (B.S.); (A.A.)
| | - Bouchra Soulaimani
- Laboratory of Microbial Biotechnologies, Agrosciences and Environment, Faculty of Science Semlalia Marrakech, Cadi Ayyad University, P.O. Box 2390, 40000 Marrakech, Morocco; (B.S.); (A.A.)
| | - Lillian Barros
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; (L.B.); (I.C.F.R.F.); (J.S.A.); (T.C.F.)
| | - Isabel C. F. R. Ferreira
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; (L.B.); (I.C.F.R.F.); (J.S.A.); (T.C.F.)
| | - Joana S. Amaral
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; (L.B.); (I.C.F.R.F.); (J.S.A.); (T.C.F.)
- REQUIMTE-LAQV, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal
| | - Tiane Cristine Finimundy
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; (L.B.); (I.C.F.R.F.); (J.S.A.); (T.C.F.)
| | - Abdelaziz Abbad
- Laboratory of Microbial Biotechnologies, Agrosciences and Environment, Faculty of Science Semlalia Marrakech, Cadi Ayyad University, P.O. Box 2390, 40000 Marrakech, Morocco; (B.S.); (A.A.)
| | - Brahim Oudra
- Water, Biodiversity and Climate Change Laboratory, Phycology, Biotechnology and Environmental Toxicology Research Unit, Faculty of Sciences Semlalia Marrakech, Cadi Ayyad University, P.O. Box 2390, 40000 Marrakech, Morocco; (S.E.A.Z.); (R.M.); (R.E.M.); (B.O.)
| | - Alexandre Campos
- CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos, s/n, 4450-208 Matosinhos, Portugal;
| | - Vitor Vasconcelos
- CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos, s/n, 4450-208 Matosinhos, Portugal;
- Departament of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
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23
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Han G, Ma H, Ren S, Gao X, He X, Zhu S, Deng R, Zhang S. Insights into the mechanism of cyanobacteria removal by the algicidal fungi Bjerkandera adusta and Trametes versicolor. Microbiologyopen 2020; 9:e1042. [PMID: 32529805 PMCID: PMC7424253 DOI: 10.1002/mbo3.1042] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 03/19/2020] [Accepted: 03/28/2020] [Indexed: 01/14/2023] Open
Abstract
Fungal mycelia can eliminate almost all cocultured cyanobacterial cells within a short time. However, molecular mechanisms of algicidal fungi are poorly understood. In this study, a time‐course transcriptomic analysis of algicidal fungus Bjerkandera adusta T1 was applied to investigate gene expression and regulation. A total of 132, 300, 422, and 823 differentially expressed genes (DEGs) were identified at 6, 12, 24, and 48 hr, respectively. Most DEGs exhibited high endopeptidase activity, cellulose catabolic process, and transmembrane transporter activity by using Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses. Many decomposition genes encoding endopeptidases were induced a little later in B. adusta T1 when compared with previously investigated algicidal fungus Trametes versicolor F21a. Besides, the accumulated expression of Polysaccharide lyases8 (PL8) gene with peptidoglycan and alginate decomposition abilities was greatly delayed in B. adusta T1 relative to T. versicolor F21a. It was implied that endopeptidases and enzymes of PL8 might be responsible for the strong algicidal ability of B. adusta T1 as well as T. versicolor F21a.
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Affiliation(s)
- Guomin Han
- School of Life Sciences, Anhui Agricultural University, Hefei, China.,National Engineering Laboratory of Crop Stress Resistance Breeding, Anhui Agricultural University, Hefei, China
| | - Hui Ma
- Key Laboratory of Rice Genetic Breeding of Anhui Province, Rice Research Institute, Anhui Academy of Agricultural Sciences, Hefei, China
| | - Shenrong Ren
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Xueyan Gao
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Xiaolong He
- Institute of Applied Mathematics, Anhui Agricultural University, Hefei, China
| | - Suwen Zhu
- School of Life Sciences, Anhui Agricultural University, Hefei, China.,National Engineering Laboratory of Crop Stress Resistance Breeding, Anhui Agricultural University, Hefei, China
| | - Ruining Deng
- School of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Shihua Zhang
- Institute of Applied Mathematics, Anhui Agricultural University, Hefei, China
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Tazart Z, Douma M, Caldeira AT, Tebaa L, Mouhri K, Loudiki M. Highlighting of the antialgal activity of organic extracts of Moroccan macrophytes: potential use in cyanobacteria blooms control. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:19630-19637. [PMID: 32219655 DOI: 10.1007/s11356-020-08440-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Accepted: 03/13/2020] [Indexed: 06/10/2023]
Abstract
Many studies have demonstrated the effectiveness of algicidal compounds produced by macrophytes against microalgae. The aim of this study was to assess the algicidal activity of seven Moroccan macrophyte ethyl acetate extracts (MEA) to control harmful algal blooms (HABs). The response and sensitivity of prokaryotic toxic cyanobacteria (Microcystis aeruginosa) and eukaryotic microalgae (Chlorella sp.) were highlighted. The algicidal effect of MEA extracts against the two microalgae was assessed using both the paper disc diffusion and microdilution methods. This last was used in order to evaluate the minimum inhibitory concentrations (MIC) and minimum algicidal concentrations (MAC). Results showed that the growth of both microalgae was significantly inhibited by all MEA extracts. Myriophyllum spicatum organic extract shows the highest growth inhibition activity against M. aeruginosa (35.33 ± 1.53) and Chlorella sp. (30.33 ± 1.15 mm). This stronger inhibitory activity was confirmed by the low MIC (6.25, 12.5 mg/L) and MAC (6.25, 12.5 mg/L) values. Furthermore, results showed different sensitivity between the prokaryotic and eukaryotic microalgae into MEA extracts. Based on the MIC and MAC values, we can distinguish two groups of plants. The first one, including M. spicatum, Ranunculus aquatilis, and Enteromorpha sp., can be considered as a preferable anti-prokaryotic group with a stronger inhibitory activity on M. aeruginosa growth. The second group, constituted by Potamogeton natans, Nasturtium officinale, Elodea sp., and Ceratophyllum sp., has a preferable and stronger inhibitory effect against eukaryotic algae (Chlorella sp.). Overall the results reveal the potential algicidal activity of macrophytes and suggested that MEA extracts could play an important role in biocontrol of HABs.
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Affiliation(s)
- Zakaria Tazart
- Water, Biodiversity and Climate Change Laboratory, Phycology, Biotechnology and Environmental Toxicology Research Unit, Faculty of Sciences Semlalia Marrakech, Cadi Ayyad University, Av. Prince My Abdellah P.O. Box 2390, 40000, Marrakech, Morocco
- HERCULES Laboratory & Chemistry Department, School of Sciences and Technology, Évora University, Largo Marquês de Marialva 8, 7000-809, Évora, Portugal
| | - Mountasser Douma
- Water, Biodiversity and Climate Change Laboratory, Phycology, Biotechnology and Environmental Toxicology Research Unit, Faculty of Sciences Semlalia Marrakech, Cadi Ayyad University, Av. Prince My Abdellah P.O. Box 2390, 40000, Marrakech, Morocco.
- Polydisciplinary Faculty of Khouribga (FPK), Sultan Moulay Slimane University, Beni Mellal, Morocco.
| | - Ana Teresa Caldeira
- HERCULES Laboratory & Chemistry Department, School of Sciences and Technology, Évora University, Largo Marquês de Marialva 8, 7000-809, Évora, Portugal
| | - Lamiaa Tebaa
- Water, Biodiversity and Climate Change Laboratory, Phycology, Biotechnology and Environmental Toxicology Research Unit, Faculty of Sciences Semlalia Marrakech, Cadi Ayyad University, Av. Prince My Abdellah P.O. Box 2390, 40000, Marrakech, Morocco
| | - Khadija Mouhri
- Water, Biodiversity and Climate Change Laboratory, Phycology, Biotechnology and Environmental Toxicology Research Unit, Faculty of Sciences Semlalia Marrakech, Cadi Ayyad University, Av. Prince My Abdellah P.O. Box 2390, 40000, Marrakech, Morocco
| | - Mohammed Loudiki
- Water, Biodiversity and Climate Change Laboratory, Phycology, Biotechnology and Environmental Toxicology Research Unit, Faculty of Sciences Semlalia Marrakech, Cadi Ayyad University, Av. Prince My Abdellah P.O. Box 2390, 40000, Marrakech, Morocco
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25
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Differential Effects of the Allelochemical Juglone on Growth of Harmful and Non-Target Freshwater Algae. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10082873] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Allelopathy has been applied to control nuisance algae in aquatic systems, but the effects of allelochemicals on the broad spectrum of algae are not well understood. We investigate algicidal effects of the allelochemical juglone on the bloom-forming, harmful algae Microcystis aeruginosa and Stephanodiscus hantzschii, and on several non-target algal species including cyanobacteria (Anabaena flos–aquae, Oscillatoria curviceps, and Phormidium subfuscum), diatoms (Asterionella formosa, Fragilaria crotonensis, and Synedra acus), and green algae (Chlorella vulgaris, Scenedesmus ecornis, and Scenedesmus quadricauda), in laboratory and field enclosure bioassays. Under three treatment concentrations (0.01, 0.1, and 1 mg L−1) of juglone, Microcystis cell density is significantly reduced by 35–93%. Concentrations of 0.1 and 1 mg L−1 inhibits Stephanodiscus growth almost equally (66% and 75%, respectively). To contrast, juglone produces a stimulatory allelopathic effect on three green algae, and other tested diatoms showed hormesis. Overall, the cyanobacteria are more sensitive to juglone than the green algae and diatoms. These results indicate that the allelopathic effects of juglone on microalgae vary depending on their characteristic cellular morphology and anatomy.
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26
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Lebedev VG, Krutovsky KV, Shestibratov KA. …Fell Upas Sits, the Hydra-Tree of Death †, or the Phytotoxicity of Trees. Molecules 2019; 24:E1636. [PMID: 31027270 PMCID: PMC6514861 DOI: 10.3390/molecules24081636] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 04/22/2019] [Accepted: 04/23/2019] [Indexed: 12/21/2022] Open
Abstract
The use of natural products that can serve as natural herbicides and insecticides is a promising direction because of their greater safety for humans and environment. Secondary metabolites of plants that are toxic to plants and insects-allelochemicals-can be used as such products. Woody plants can produce allelochemicals, but they are studied much less than herbaceous species. Meanwhile, there is a problem of interaction of woody species with neighboring plants in the process of introduction or invasion, co-cultivation with agricultural crops (agroforestry) or in plantation forestry (multiclonal or multispecies plantations). This review describes woody plants with the greatest allelopathic potential, allelochemicals derived from them, and the prospects for their use as biopesticides. In addition, the achievement of and the prospects for the use of biotechnology methods in relation to the allelopathy of woody plants are presented and discussed.
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Affiliation(s)
- Vadim G Lebedev
- Forest Biotechnology Group, Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 6 Prospect Nauki, Pushchino, 142290 Moscow, Russia.
| | - Konstantin V Krutovsky
- Department of Forest Genetics and Forest Tree Breeding, Georg-August University of Göttingen, Büsgenweg 2, 37077 Göttingen, Germany.
- Laboratory of Population Genetics, Vavilov Institute of General Genetics, Russian Academy of Sciences, Gubkina Str. 3, 119991 Moscow, Russia.
- Laboratory of Forest Genomics, Genome Research and Education Center, Institute of Fundamental Biology and Biotechnology, Siberian Federal University, 50a/2 Akademgorodok, 660036 Krasnoyarsk, Russia.
- Department of Ecosystem Science and Management, Texas A&M University, 495 Horticulture Rd, College Station, TX 77843-2138, USA.
| | - Konstantin A Shestibratov
- Forest Biotechnology Group, Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 6 Prospect Nauki, Pushchino, 142290 Moscow, Russia.
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