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Wang Z, Li G, Huang H, Zhang W, Wang J, Huang S, Zheng Z. Effects of Solar Radiation on the Cyanobacteria: Diversity, Molecular Phylogeny, and Metabolic Activity. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.928816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Cyanobacteria bloom is a global aquatic ecological problem that seriously threatens human health and social development. The outbreak of cyanobacteria bloom is affected by various environmental factors, among which light dose is an essential factor. In this study, the growth changes of cyanobacteria under different amounts of natural light were studied by simulating different depths of Taihu Lake, and we used 16S rRNA and non-targeted metabolomics for sequencing to reveal the effects of light on the diversity of cyanobacteria and coexisting microorganisms, and to analyze the changes of related genes, functional structures and internal metabolism involved in nitrogen cycling. The result shows that excessive and insufficient light could limit the growth, photosynthesis, and EPS secretion of cyanobacteria, resulting in an antioxidant stress response. At the same time, the amount of natural light affects the vertical distribution of cyanobacteria, and under the condition of 1/3 natural light, cyanobacteria first appeared to float. In addition, the amount of natural light affects the diversity, abundance, and metabolites of cyanobacteria and coexisting microorganisms, and the expression of nifH, nirK, and nirS, three nitrogen-fixing genes, is significantly different in different genera. This study provides valuable information on the molecular mechanism of the effects of the amount of natural light on cyanobacteria bloom.
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Wei S, Zhuang G, Cheng L, Wang S. The proliferation rule of Microcystis aeruginosa under different initial pH conditions and its influence on the pH value of the environment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:13835-13844. [PMID: 34599447 DOI: 10.1007/s11356-021-16719-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Accepted: 09/21/2021] [Indexed: 06/13/2023]
Abstract
This study investigated the characteristics of the proliferation process of Microcystis aeruginosa and its changes to environmental pH values under different initial pH values and different initial inoculation densities. The results showed that although the initial pH value or the initial inoculation density was different, the pH values of the culture systems fluctuated up and down throughout the proliferation of M. aeruginosa, both on a daily and hourly time scale, and then tended to stabilize around the same value of 10.0 at the end of proliferation. The optimal pH value for the proliferation of M. aeruginosa was 9.55. This study creatively proposes that the period when the environmental pH value starts to rise rapidly toward 9.0 could be selected as an early warning period for a cyanobacterial outbreak, and the environmental pH value could be adjusted to below 8.0 to delay the outbreak. These results provide a scientific basis for further understanding the mechanism of cyanobacterial blooms and formulating pH-based control strategies.
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Affiliation(s)
- Sijie Wei
- Department of Environmental Science and Engineering, Fudan University, 2005 Songhu Road, Shanghai, 200433, People's Republic of China
| | - Guanjie Zhuang
- Department of Environmental Science and Engineering, Fudan University, 2005 Songhu Road, Shanghai, 200433, People's Republic of China
| | - Lirijian Cheng
- Department of Environmental Science and Engineering, Fudan University, 2005 Songhu Road, Shanghai, 200433, People's Republic of China
| | - Shoubing Wang
- Department of Environmental Science and Engineering, Fudan University, 2005 Songhu Road, Shanghai, 200433, People's Republic of China.
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Zuo S, Yang H, Jiang X, Ma Y. Magnetic Fe 3O 4 nanoparticles enhance cyanobactericidal effect of allelopathic p-hydroxybenzoic acid on Microcystis aeruginosa by enhancing hydroxyl radical production. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 770:145201. [PMID: 33515889 DOI: 10.1016/j.scitotenv.2021.145201] [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: 09/16/2020] [Revised: 11/28/2020] [Accepted: 01/11/2021] [Indexed: 06/12/2023]
Abstract
Recently, considerable progress has been made in the environmental application of nanotechnology. However, little is known about how nanomaterials might affect the cyanobacterial suppression potential of allelochemicals. In this study, a microcosm was employed to simulate and verify the effect of magnetic Fe3O4 nanoparticles (MFN) on the inhibitory influence of allelopathic hydroxybenzoic acid (p-Ha) on bloom-forming Microcystis aeruginosa. MFN had a hormetic effect on cyanobacterial growth. At a neutral concentration of 182 mg/L, MFN enhanced the algal suppression by p-Ha and decreased the IC50 by half, which was significantly and positively associated with the amount of OH. Furthermore, adding MFN induced a stronger physiological response than treatment with only p-Ha. The cellular integrity was severely disrupted for the cyanobacterium M. aeruginosa. The total protein content decreased rapidly to inactivate the algae by limiting the amounts of extracellular microcystin and polysaccharide released. The modification of the effect of p-Ha by MFN was reflected by the intracellular NO content of M. aeruginosa. In addition, the typical radical scavengers ascorbic acid and 5,5-dimethyl-1-pyrroline N-oxide decreased OH production to weaken algal suppression under the combined treatment with p-Ha and MFN. By contrast, the addition of Fe3+ and increasing the light intensity triggered the generation of OH and strong cyanobacterial suppression. Thus, MFN could enhance the cyanobacterial control efficiency of p-Ha and decrease the input of allelochemicals in the field. These findings suggest a novel mode of allelochemical modification by nanomaterials as a promising cyanobactericide for harmful algal bloom management.
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Affiliation(s)
- Shengpeng Zuo
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Anhui Provincial Engineering Laboratory of Water and Soil Pollution Control and Remediation, School of Ecology and Environment, Anhui Normal University, Wuhu 241003, PR China.
| | - Hao Yang
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Anhui Provincial Engineering Laboratory of Water and Soil Pollution Control and Remediation, School of Ecology and Environment, Anhui Normal University, Wuhu 241003, PR China
| | - Xiaofeng Jiang
- Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Anhui Provincial Engineering Laboratory of Water and Soil Pollution Control and Remediation, School of Ecology and Environment, Anhui Normal University, Wuhu 241003, PR China
| | - Yongqing Ma
- Institute of Soil and Water Conservation, Northwest A&F University, Chinese Academy of Sciences, Ministry of Water Resources, Yangling 712100, PR China
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Xie E, Li F, Wang C, Shi W, Huang C, Fa K, Zhao X, Zhang D. Roles of sulfur compounds in growth and alkaline phosphatase activities of Microcystis aeruginosa under phosphorus deficiency stress. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:21533-21541. [PMID: 32279264 DOI: 10.1007/s11356-020-08480-2] [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: 11/28/2019] [Accepted: 03/16/2020] [Indexed: 06/11/2023]
Abstract
Microcystis aeruginosa is one of the most common algae found in eutrophicated water bodies. Alkaline phosphatase (AKP) can be produced by Microcystis aeruginosa to utilize organic phosphates under phosphorus deficiency stress, thereby AKP can be regarded as an important indicator for algal growth. Sulfur compounds are ubiquitous in waters, while investigation on the interactions between sulfur compounds and Microcystis aeruginosa is limited. In this work, we introduced 33 types of sulfur compounds to culture Microcystis aeruginosa, and the results demonstrated that algal growth is positively related to AKP activities. Toxicity of organic sulfur compounds was further evaluated using Toxicity Estimation Software Tool based on quantitative structure-activity relationship prediction. The algal growth results exhibited strong correlation to the toxicity endpoints suggesting the organic sulfur compounds inhibits the algal growth as toxic matters. K-means cluster analyses have been carried out subsequently via Python based on the results of algal growth and AKP activities of each sample and statistically, the sulfur compounds can be adequately clustered into 2 groups. According to clustering results, sulfonic acids exhibit low toxicity while sulfur amino acids can be considered as more toxic compounds. Graphical abstract Varied sulfur compounds (33 types) were investigated to find out the interactions between them and Microcystis aeruginosa, a common alga. K-means cluster and correlation analyses demonstrate that algal growth and alkaline phosphatase activities exhibited strong correlation to the predicted toxicity endpoints.
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Affiliation(s)
- En Xie
- College of Water Resources and Civil Engineering, China Agricultural University, Beijing, 100083, People's Republic of China
| | - Fangfang Li
- College of Water Resources and Civil Engineering, China Agricultural University, Beijing, 100083, People's Republic of China
| | - Chaozi Wang
- College of Water Resources and Civil Engineering, China Agricultural University, Beijing, 100083, People's Republic of China
- Department of Land, Air, and Water Resources, UC Davis, Davis, CA, 95616, USA
| | - Wei Shi
- College of Water Resources and Civil Engineering, China Agricultural University, Beijing, 100083, People's Republic of China
| | - Chen Huang
- College of Water Resources and Civil Engineering, China Agricultural University, Beijing, 100083, People's Republic of China
| | - Keyu Fa
- College of Water Resources and Civil Engineering, China Agricultural University, Beijing, 100083, People's Republic of China.
| | - Xiao Zhao
- College of Water Resources and Civil Engineering, China Agricultural University, Beijing, 100083, People's Republic of China.
| | - Dayi Zhang
- School of Environment, Tsinghua University, Beijing, 100084, People's Republic of China
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Liu Y, Yang Q, Zhu M, Wang L, Zhou Q, Yang Z, Huang X. Endocytosis in microcystis aeruginosa accelerates the synthesis of microcystins in the presence of lanthanum(III). HARMFUL ALGAE 2020; 93:101791. [PMID: 32307072 DOI: 10.1016/j.hal.2020.101791] [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: 10/25/2019] [Revised: 02/16/2020] [Accepted: 02/26/2020] [Indexed: 06/11/2023]
Abstract
Microcystis aeruginosa bloom releases microcystins (MCs) into global aquatic environment, which other living organisms can ingest the released MCs. The toxic effects of MCs on organisms are amplified through the food chain, threatening human and animal health. Lanthanum(III) [La(III)], a pollutant in aquatic environments worldwide, has been confirmed to stimulate MC synthesis in M. aeruginosa. However, the involved cellular mechanism remains unclear. Here, using interdisciplinary approaches, it was first observed that La(III) activated the clathrin-mediated endocytosis in M. aeruginosa. This allowed the algal cells to rapidly absorb macro-elements (C, N and P) and micro-elements (K, Ca and Mg) through the clathrin-mediated endocytosis. These in turn stimulated chlorophyll production, photosynthesis, the growth of the algal cells, and the increases in the productions of MC-LW, MC-LR and MC-YR in M. aeruginosa. These results provide valuable insights for understanding the involved cellular mechanism on MC synthesis and managing MC pollution, which is important to protect global food chain and the ecosystem.
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Affiliation(s)
- Yongqiang Liu
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Qing Yang
- School of Life Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Mengjue Zhu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Lihong Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Qing Zhou
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Zhenbiao Yang
- Center for Plant Cell Biology, Institute of Integrative Genome Biology, and Department of Botany and Plant Sciences, University of California, Riverside, CA 92521, USA
| | - Xiaohua Huang
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China.
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Zhang H, Zhao Y, Yin H, Wang Y, Li H, Wang Z, Geng Y, Liang W, Wang H. Effect of aquatic macrophyte growth on landscape water quality improvement. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:33791-33803. [PMID: 29881960 DOI: 10.1007/s11356-018-2421-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 05/25/2018] [Indexed: 06/08/2023]
Abstract
The water of urban landscape park is often confronted with microalgal blooms due to its stagnancy. Bioremediation using the combined emergent and submerged plants to control the microalgae growth was investigated in the present study. Two water bodies (Bei and Xin) of Yuyuantan Park in Beijing were selected for the field experiments, and the other lakes with different vegetation of macrophytes were selected as the comparison. The concentrations of chlorophyll a (chl a), chemical oxygen demand (COD), total nitrogen (TN), and total phosphorus (TP), and water temperature and transparency were monitored before and after bioremediation from 2015 to 2017. Results showed that the effects of microalgal inhibition were more significant 2 years after bioremediation. Specifically, the chl a of Dong Lake without any vegetation of macrophytes was up to 65.1 μg/L in summer of 2017, while the Bei and Xin Lakes was only 6.2 and 11.3 μg/L, respectively. In addition, the water quality and transparency also improved, with water bodies being crystal clear. Submerged plants played major roles in microalgal control and water quality improvement, compared to the lakes with only emergent plants. The intensity of humic acid-like substances in three-dimensional fluorescent spectra was stronger for the lakes with submerged plants.
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Affiliation(s)
- Hengfeng Zhang
- College of Environmental Science and Engineering, Beijing Forestry University, 35# Qinghua East Rd., Haidian District, Beijing, China
| | - Yixi Zhao
- College of Environmental Science and Engineering, Beijing Forestry University, 35# Qinghua East Rd., Haidian District, Beijing, China
| | - Hang Yin
- School of Landscape Architecture, Beijing Forestry University, Beijing, China
| | - Yuanyuan Wang
- College of Environmental Science and Engineering, Beijing Forestry University, 35# Qinghua East Rd., Haidian District, Beijing, China
| | - Huixian Li
- College of Environmental Science and Engineering, Beijing Forestry University, 35# Qinghua East Rd., Haidian District, Beijing, China
| | - Zhanshen Wang
- Yuyuantan Park Management Department of Beijing, Beijing, China
| | - Yongbo Geng
- Yuyuantan Park Management Department of Beijing, Beijing, China
| | - Wenyan Liang
- College of Environmental Science and Engineering, Beijing Forestry University, 35# Qinghua East Rd., Haidian District, Beijing, China.
| | - Hongjie Wang
- College of Environmental Science and Engineering, Beijing Forestry University, 35# Qinghua East Rd., Haidian District, Beijing, China.
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Liu J, Yang C, Chi Y, Wu D, Dai X, Zhang X, Igarashi Y, Luo F. Algicidal characterization and mechanism of Bacillus licheniformis
Sp34 against Microcystis aeruginosa
in Dianchi Lake. J Basic Microbiol 2019; 59:1112-1124. [DOI: 10.1002/jobm.201900112] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Revised: 06/26/2019] [Accepted: 07/25/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Jinyu Liu
- Chongqing Key Laboratory, Research Center of Bioenergy and Bioremediation, College of Resources and Environment; Southwest University; Chongqing China
| | - Caiyun Yang
- Chongqing Key Laboratory, Research Center of Bioenergy and Bioremediation, College of Resources and Environment; Southwest University; Chongqing China
| | - Yuxin Chi
- Chongqing Key Laboratory, Research Center of Bioenergy and Bioremediation, College of Resources and Environment; Southwest University; Chongqing China
| | - Donghao Wu
- Chongqing Key Laboratory, Research Center of Bioenergy and Bioremediation, College of Resources and Environment; Southwest University; Chongqing China
| | - Xianzhu Dai
- Chongqing Key Laboratory, Research Center of Bioenergy and Bioremediation, College of Resources and Environment; Southwest University; Chongqing China
| | - Xiaohui Zhang
- Chongqing Key Laboratory, Research Center of Bioenergy and Bioremediation, College of Resources and Environment; Southwest University; Chongqing China
| | - Yasuo Igarashi
- Chongqing Key Laboratory, Research Center of Bioenergy and Bioremediation, College of Resources and Environment; Southwest University; Chongqing China
| | - Feng Luo
- Chongqing Key Laboratory, Research Center of Bioenergy and Bioremediation, College of Resources and Environment; Southwest University; Chongqing China
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