Article
Limnology
Zengling Ma, Xiaoqiao Zhang, Renhui Li, Min Wang, Wenli Qin, He Zhang, Gang Li, Henguo Yu, Chuanjun Dai, Min Zhao
Summary: Studies have shown that regardless of the initial biomass ratios, Microcystis aeruginosa can inhibit the growth of Raphidiopsis raciborskii during co-cultivation, allowing M. aeruginosa to dominate in the experimental setting.
JOURNAL OF OCEANOLOGY AND LIMNOLOGY
(2022)
Article
Environmental Sciences
Tianheng Gao, Yinkang Li, Wenlei Xue, Yueqiang Pan, Xuexia Zhu
Summary: Freshwater salinization is a growing environmental issue that affects the survival and diversity of phytoplankton. This study investigated the physiological, morphological, and competitive responses of Microcystis aeruginosa and Scenedesmus obliquus to salinity stress. The results showed that increasing salinity negatively affected the growth of both species, with S. obliquus outcompeting M. aeruginosa in cocultures. Salinity, competition, and cultivation time also influenced the photosynthetic performance of the algae. The study highlights the significant impact of salinity stress and competition on the growth and performance of algae species, and emphasizes the importance of interspecific interactions in freshwater ecosystems.
Article
Environmental Sciences
Xudong Zhou, Xincheng Jiang, Jibao Chen, Pengcheng Gao
Summary: The use of tetracyclines in medicine contributes to contamination in the environment and affects the growth of Microcystis aeruginosa and Chlamydomonas microsphaera. The competitive advantage of M. aeruginosa is enhanced with the addition of tetracyclines, while the growth of C. microsphaera is significantly inhibited.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Jiaqi An, Yongcan Jiang, Huafen Cao, Ceng Yi, Suxia Li, Mengjie Qu, Guanglong Liu
Summary: This study investigated the photodegradation dynamics and mechanism of glyphosate in ditches, ponds, and lakes through light irradiation experiments. It was found that glyphosate can undergo photochemical degradation under sunlight, leading to the production of phosphate. The main reactive oxygen species for glyphosate photodegradation was hydroxyl radical. The generated phosphate from glyphosate photodegradation can greatly enhance the growth of Microcystis aeruginosa, increasing the risk of eutrophication. Therefore, the scientific and reasonable application of glyphosate is necessary to avoid environmental risks.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Environmental Sciences
Di Wu, Ting Wang, Jing Wang, Lijuan Jiang, Ying Yin, Hongyan Guo
Summary: The study reveals that 1 μm polystyrene microplastics have a greater impact on freshwater cyanobacteria compared to 100 nm microplastics, promoting algal growth and inhibiting photosynthesis. Additionally, 1 μm microplastics increase intracellular microcystins content and inhibit their release, while 100 nm microplastics only promote microcystin production.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Lili Hu, Haiyan Wang, Jingzhen Cui, Wansheng Zou, Jie Li, Kun Shan
Summary: Global warming accelerates the expansion of cyanobacterial blooms in freshwater ecosystems, but the impact of temperature-induced toxin production changes on co-existing strains remains unknown. Competition experiments revealed that the growth of Microcystis and Pseudanabaena was influenced by temperature, with Pseudanabaena showing increased specific growth ratio but decreased maximum cell density. In co-cultures, the growth of Pseudanabaena TH-1 was uniformly inhibited, while that of DC-1 was influenced by co-culturing with Microcystis, except at higher temperatures. Microcystis dominated or co-existed with Pseudanabaena, as expected.
Article
Environmental Sciences
Zhipeng Zhen, Ran Cai, Muhammad Salam, Jianmei Hu, Bing Yang, Mengzi Liu, Hong Li, Bingran Tang
Summary: This study systematically investigated the effects of biodegradable microplastics on the growth and competition of Microcystis aeruginosa and Scenedesmus obliquus. The results showed that microplastic addition promoted the growth of M. aeruginosa but reduced its toxin-producing capability, weakening its competitive advantage over S. obliquus.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Agricultural Engineering
Xiaonan Zhou, Tiefeng Zheng, Yike Xie, Shuzhen Zou, Sun Xu, Meng Lai, Zhaojiang Zuo
Summary: The aim of this study was to uncover the mechanism of astaxanthin biosynthesis in Microcystis aeruginosa and found that purple light promoted the growth of M. aeruginosa and the production of astaxanthin by up-regulating the expression of genes related to DNA replication, light reaction, and carbon fixation.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Samylla Oliveira, Allan Clemente, Indira Menezes, Amanda Gois, Ismael Carloto, Linda Lawton, Jose Capelo-Neto
Summary: This study evaluated the impact of velocity gradients, mixing times, and powdered activated carbon (PAC) addition on the integrity of cyanobacteria. Results showed varying levels of sensitivity to shear stress among different cyanobacterial species, with some showing high resilience and others being more sensitive to shear stress.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Chemical
Gongduan Fan, Xia Li, Jiuhong Lin, Xinyi Wu, Ling Zhang, Jiaxin Wu, Yingmu Wang
Summary: The self-floating hydrogel photocatalyst constructed via freeze-thaw method showed significant inactivation effect on Microcystis aeruginosa, exhibiting excellent photocatalytic performance under visible light. It disrupted cell morphology and antioxidant system, and demonstrated excellent reusability and mechanical strength properties, with great potential for removal of natural organic matter.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Gongduan Fan, Xinyi Wu, Yang Tao, Mingqian Xia, Zhuoyi Chen, Hao Li, Jing Luo, Jianyong Zou, Zhanglin Hong, Kaiqin Xu
Summary: The synthesized Ag2MoO4/TACN nanomaterial exhibits excellent photocatalytic algae removal performance, with better inactivation effect under alkaline and neutral conditions. By releasing ROS and Ag+ to disrupt cell membrane function and hinder photosynthetic and metabolic activities, algal cells are eventually killed.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Environmental
Chengyang Zhang, Guoyang Zhang, Jiyuan Jin, Hongcen Zheng, Zhiwei Zhou, Shujuan Zhang
Summary: The coexistence of selenite (Se(IV)) and acetylacetone (AA) have a synergistic effect on the growth inhibition of Microcystis aeruginosa, which is significant in the control of harmful algal blooms. Se(IV) acts as a catalyst in the reactions between AA and quinones, leading to accelerated reactions. This finding sheds light on the regulation of electron transport chains and redox balances in various processes.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Linlin Cai, Peiyun Yang, Jianmin Ma
Summary: Investigations on the individual cultures and co-cultures of Cyclotella sp., Chlocella vulgaris, and Microcystis aeruginosa reveal that M. aeruginosa shows the greatest growth advantage, while Cyclotella sp. tends to be competitively disadvantaged when cultured with other species.
FRESENIUS ENVIRONMENTAL BULLETIN
(2021)
Article
Environmental Sciences
Feng Xu, Zhenhong Wang, Yan Chen, Yinchai Luo, Zhuanxi Luo
Summary: This study investigated the impact of nano-Fe2O3 as a substitute iron source on algal growth and arsenate metabolism in the presence of dissolved organic phosphorus. The results showed that nano-Fe2O3 inhibited the growth of Microcystis aeruginosa and the release of microcystin in arsenate-polluted water with glucose-6-phosphate as the sole phosphorus source. Nano-Fe2O3 facilitated arsenate biotransformation in algal cells and relieved the risk of arsenite release.
ENVIRONMENTAL POLLUTION
(2023)
Article
Biochemistry & Molecular Biology
Zhi-Min Li, Ziwei Hu, Xiaoqin Wang, Suhang Chen, Weiyan Yu, Jianping Liu, Zhimin Li
Summary: In this study, the biochemical and structural properties of two α-ketoglutarate decarboxylases from cyanobacteria were investigated. It was found that the enzyme encoded by the MAE_06010 gene exhibited higher catalytic efficiency compared to the one encoded by the MiAbw_01735 gene. Further investigation revealed that MaKGD showed optimum activity at pH 6.5-7.0 and was most activated by Mg2+. The structural modeling and mutagenesis study provided insights into the binding pocket of MaKGD and the importance of certain residues in its catalysis.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Plant Sciences
Liang He, Elisabeth S. Bakker, Marta M. Alirangues Nunez, Sabine Hilt
Article
Microbiology
Marta Manrubia, L. Basten Snoek, Carolin Weser, G. F. Veen, Wim H. van der Putten
FRONTIERS IN MICROBIOLOGY
(2019)
Article
Ecology
Marcella C. B. Mesquita, Ana Carolina C. Prestes, Andreia M. A. Gomes, Marcelo M. Marinho
Article
Environmental Sciences
Caio Graco-Roza, Juliana B. O. Santos, Vera L. M. Huszar, Patricia Domingos, Janne Soininen, Marcelo Manzi Marinho
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Environmental Sciences
Frank van Oosterhout, Guido Waajen, Said Yasseri, Marcelo Manzi Marinho, Natalia Pessoa Noyma, Maira Mucci, Grant Douglas, Miquel Lurling
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Environmental Sciences
Aloysio S. Ferrao-Filho, Uanderson J. Pereira, Mauro C. P. Vilar, Leonardo de Magalhaes, Marcelo M. Marinho
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2020)
Article
Ecology
Miquel Lurling, Li Kang, Maira Mucci, Frank van Oosterhout, Natalia Pessoa Noyma, Marcela Miranda, Vera L. M. Huszar, Guido Waajen, Marcelo Manzi Marinho
ECOLOGICAL ENGINEERING
(2020)
Article
Biochemistry & Molecular Biology
Natalia Pessoa Noyma, Marcella C. B. Mesquita, Fabio Roland, Marcelo Manzi Marinho, Vera L. M. Huszar, Miquel Lurling
Summary: Research on the interactive effects of high temperature and UVR on cyanobacteria is limited. Different species of cyanobacteria show varying responses to UVR at different temperatures, with MIRF showing a cumulative negative effect on PSII efficiency while CYRF does not. The combined elevated temperature and UVR stress could potentially influence species competition.
PHOTOCHEMISTRY AND PHOTOBIOLOGY
(2021)
Article
Ecology
Caio Graco-Roza, Angel M. Segura, Carla Kruk, Patricia Domingos, Janne Soininen, Marcelo Manzi Marinho
Summary: Emergent neutrality theory suggests that the similarity and difference in species niches can impact interspecific competition, leading to the appearance of species clumps. In the phytoplankton community along a tropical river, two main clumps were observed, with differences in species biovolume correlating with functional similarity. Species within clumps exhibit quasi-neutral behavior, but even minor trait shifts may affect species biovolume.
Article
Limnology
Marcela Miranda, Marcelo Manzi Marinho, Natalia Noyma, Vera L. M. Huszar, Frank van Oosterhout, Miquel Lurling, Jean P. Ometto, Felipe S. Pacheco
Summary: This study on nutrient balance in Brazilian urban ponds revealed that birds are the main source of phosphorus (P), with most of the phosphorus loss going to sediment and part being returned to the water column through internal loading.
Article
Food Science & Technology
Renan Silva Arruda, Natalia Pessoa Noyma, Leonardo de Magalhaes, Marcella Coelho Berjante Mesquita, Eryka Costa de Almeida, Ernani Pinto, Miquel Lurling, Marcelo Manzi Marinho
Summary: This laboratory study evaluated the potential effects of the Floc and Sink technique on releasing microcystins from the precipitated biomass. The combination treatment of PAC with LMB and/or LRS was more effective in removing biomass and reducing extracellular MC concentrations compared to using PAC alone. These results suggest that the Floc and Sink technique shows promise in mitigating cyanobacteria and extracellular MC in water column compared to sole coagulant PAC.
Article
Limnology
Frank van Oosterhout, Said Yasseri, Natalia Noyma, Vera Huszar, Marcelo Manzi Marinho, Maira Mucci, Guido Waajen, Miquel Lurling
Summary: The study investigated the chemical and ecological responses to the internal loading treatment at Lake Rauwbraken, showing that the treatment effectively controlled internal loading and improved water quality. However, over time, the coverage of submerged macrophytes decreased, and the lake is returning to a eutrophic state due to ongoing external phosphorus loads.
Article
Ecology
Caio Graco-Roza, Sonja Aarnio, Nerea Abrego, Alicia T. R. Acosta, Janne Alahuhta, Jan Altman, Claudia Angiolini, Jukka Aroviita, Fabio Attorre, Lars Baastrup-Spohr, Jose J. Barrera-Alba, Jonathan Belmaker, Idoia Biurrun, Gianmaria Bonari, Helge Bruelheide, Sabina Burrascano, Marta Carboni, Pedro Cardoso, Jose C. Carvalho, Giuseppe Castaldelli, Morten Christensen, Gilsineia Correa, Iwona Dembicz, Jurgen Dengler, Jiri Dolezal, Patricia Domingos, Tibor Eros, Carlos E. L. Ferreira, Goffredo Filibeck, Sergio R. Floeter, Alan M. Friedlander, Johanna Gammal, Anna Gavioli, Martin M. Gossner, Itai Granot, Riccardo Guarino, Camilla Gustafsson, Brian Hayden, Siwen He, Jacob Heilmann-Clausen, Jani Heino, John T. Hunter, Vera L. M. Huszar, Monika Janisova, Jenny Jyrkankallio-Mikkola, Kimmo K. Kahilainen, Julia Kemppinen, Lukasz Kozub, Carla Kruk, Michel Kulbiki, Anna Kuzemko, Peter Christiaan le Roux, Aleksi Lehikoinen, Domenica Teixeira de Lima, Angel Lopez-Urrutia, Balazs A. Lukacs, Miska Luoto, Stefano Mammola, Marcelo M. Marinho, Luciana S. Menezes, Marco Milardi, Marcela Miranda, Gleyci A. O. Moser, Joerg Mueller, Pekka Niittynen, Alf Norkko, Arkadiusz Nowak, Jean P. Ometto, Otso Ovaskainen, Gerhard E. Overbeck, Felipe S. Pacheco, Virpi Pajunen, Salza Palpurina, Felix Picazo, Juan A. C. Prieto, Ivan F. Rodil, Francesco M. Sabatini, Shira Salingre, Michele De Sanctis, Angel M. Segura, Lucia H. S. da Silva, Zora D. Stevanovic, Grzegorz Swacha, Anette Teittinen, Kimmo T. Tolonen, Ioannis Tsiripidis, Leena Virta, Beixin Wang, Jianjun Wang, Wolfgang Weisser, Yuan Xu, Janne Soininen
Summary: This study provides the first global synthesis of taxonomic and functional distance decay along spatial and environmental distance. The results demonstrate that taxonomic distance decay is stronger than functional distance decay, with the fastest decay rates observed in datasets from mid-latitudes. Overall, taxonomic distance decay is a useful tool for biogeographical research, while functional distance decay may be a cost-effective option for investigating community changes in heterogeneous environments.
GLOBAL ECOLOGY AND BIOGEOGRAPHY
(2022)
Article
Environmental Sciences
Larissa Souza Passos, Eryka Costa de Almeida, Alexandre Villela, Adilson Nunes Fernandes, Marcelo Manzi Marinho, Levy Carvalho Gomes, Ernani Pinto
Summary: This study assessed the pollution extent of a crucial public water supply reservoir in southeastern Brazil. The findings revealed high concentrations of cyanobacteria and cyanotoxins in the reservoir, posing a significant ecological risk to aquatic life. Additionally, the analysis showed that levels of metals, metalloids, and fecal bacteria were below the maximum permitted limit according to Brazilian legislation.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Marine & Freshwater Biology
Erick Drummond, Vivian Balthazar Gonsalves Leite, Natalia Pessoa Noyma, Leonardo De Magalhaes, Caio Graco-Roza, Vera Lucia Huszar, Miquel Luerling, Marcelo Manzi Marinho
Summary: One of the main symptoms of eutrophication is the increase in phytoplankton biomass, including cyanobacteria. To control eutrophication, reducing the external nutrient load and implementing in-lake interventions are necessary. Floc & Sink (F&S) technique, which applies a low dose of coagulants and ballasts to remove cyanobacteria biomass, is effective for deep lakes with a higher external nutrient load. The study evaluated the efficiency of the F&S technique in a tropical reservoir and found that combined treatments were more effective in removing algal biomass, with variations in efficiency observed over time and spatially.