Article
Food Science & Technology
Jordan A. Facey, Jake P. Violi, Josh J. King, Chowdhury Sarowar, Simon C. Apte, Simon M. Mitrovic
Summary: Microcystis aeruginosa, a widespread cyanobacteria, exhibits growth limitation when iron, cobalt, and manganese are excluded from the growth media. Intracellular iron concentrations are notably higher in treatments grown in cobalt-deplete media compared to other treatments.
Article
Biochemistry & Molecular Biology
Katherine A. Perri, Schonna R. Manning, Susan B. Watson, Norma L. Fowler, Gregory L. Boyer
Summary: This study evaluated the application of Fv/Fm to cyanobacteria using controlled experiments on a single isolate. The results showed significant differences in Fv/Fm estimates among PAM fluorometers for light- versus dark-adapted cell suspensions, with no effect of dark adaptation on Fv/Fm across a single nutrient treatment. All Fv/Fm methods could distinguish between different nutrient limitations, but not all specific nutrient stresses were resolved.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
(2021)
Article
Horticulture
Hong Wang, Yujian Guo, Jianjun Zhu, Kun Yue, Kaibing Zhou
Summary: The study found that under 96 kJ/(m²·d) of UV-B radiation, mango trees showed decreased yield, decreased sugar content and vitamin C in fruits, and inhibited photosynthesis in leaves; while under 24 kJ/(m²·d), the content of photosynthetic pigments in leaves increased, but overall performance was similar to the control group.
Article
Environmental Sciences
Jingjie Ma, Peifang Wang, Bin Hu, Xun Wang, Jin Qian
Summary: This study found that the simultaneous increase in ammonium and CO2 provides cyanobacteria with greater advantages and may exacerbate cyanobacterial blooms in aquatic ecosystems. Under light conditions of 80 mu mol photons/m(2)/s, elevated CO2 can reduce intracellular reactive oxygen species, leading to increased cell density and chlorophyll a content. However, under light conditions of 200 mu mol photons/m(2)/s, elevated CO2 concentration affects NO3--grown cyanobacteria, suppressing their growth.
Article
Microbiology
Taehui Yang, Chang Soo Lee, Ja-Young Cho, Mi-Jung Bae, Eui-Jin Kim
Summary: This study investigated the relationship between harmful cyanobacterial species and their associated bacterial assemblages under different light conditions. The growth pattern of cyanobacteria and bacterial composition varied significantly with light restrictions. Nitrogen assimilation by cyanobacteria primarily occurred under natural light conditions, while the nitrogenase in symbiotic bacteria could also be activated under blue light conditions. Sphingobium sp. was particularly dominant when the cell density of Microcystis sp. increased under blue light conditions.
Article
Biology
Mostafa M. El-Sheekh, Eman A. Alwaleed, Aml Ibrahim, Hani Saber
Summary: Exposure to UV-B has a significant harmful impact on the growth, pigments, metabolic activity, and cellular ultrastructure of some cyanobacteria and chlorophytes, with increased inhibition observed with longer exposure times.
INTERNATIONAL JOURNAL OF RADIATION BIOLOGY
(2021)
Article
Environmental Sciences
Fernanda Breda-Alves, Valeria de Oliveira Fernandes, Micheline Kezia Cordeiro-Araujo, Mathias Ahii Chia
Summary: This study investigated the effects of herbicide and nitrogen on allelopathic interactions and toxin production of Microcystis aeruginosa and Raphidiopsis raciborskii. The results showed that nitrogen enrichment and the presence of herbicide may lead to excessive proliferation of these algae species and increased production of cyanotoxins in aquatic environments.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Physical
Alexandra M. Folcik, Cory Klemashevich, Suresh D. Pillai
Summary: Harmful cyanobacterial blooms (cyanoHABs) are a threat to human and animal health due to the production of cyanotoxins. Microcystis aeruginosa, a common cyanobacterium, produces the toxin MC-LR. High energy electron beam (eBeam) irradiation can effectively kill M. aeruginosa cells and degrade MC-LR, but there may be a delay in cell lysis post-irradiation. The results suggest that eBeam technology may be suitable for mitigating cyanoHABs in water treatment following cell lysis.
RADIATION PHYSICS AND CHEMISTRY
(2021)
Article
Food Science & Technology
Jingjing Zhou, Mingzhi Qu, Christy Dunkinson, Daniel D. Lefebvre, Yuxiang Wang, R. Stephen Brown
Summary: The presence of cyanobacteria during a harmful algal bloom can significantly affect the survival of Escherichia coli bacteria. This is due to the toxic effect of cyanobacteria-produced microcystins on E. coli. Therefore, the use of E. coli as a fecal indicator bacteria needs to take into consideration the presence of cyanobacteria.
Article
Multidisciplinary Sciences
Elliot L. Weiss, Mingxu Fang, Arnaud Taton, Richard Szubin, Bernhard O. Palsson, B. Greg Mitchell, Susan S. Golden
Summary: This study evaluates the genes that affect the tolerance of cyanobacteria to UV radiation and highlights the importance of genes involved in DNA repair, glutathione synthesis, and the assembly and maintenance of photosystem II. The disruption of a gene encoding leucyl aminopeptidase (LAP) shows the greatest decrease in UV-specific fitness.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Plant Sciences
Karina E. Martinez-Silvestre, Jose Alfredo Santiz-Gomez, Maria Celina Lujan-Hidalgo, Nancy Ruiz-Lau, Yazmin Sanchez-Roque, Federico A. Gutierrez-Miceli
Summary: This study aimed to evaluate the effect of UV-B radiation on the growth and synthesis of bioactive compounds in tempisque callus. The highest callus formation index was obtained using TDZ and 2,4-D at a concentration of 1 mg/mL. Continuous exposure to UV-B radiation for four hours per day over four weeks resulted in the greatest increase in phenols and flavonoids concentration. The callus obtained from leaves explants had the highest concentrations of quercetin, kaempferol, and gallic acid.
Article
Biotechnology & Applied Microbiology
Rajesh P. Rastogi, Anu Shree, Hiral M. Patel, Smita Chaudhry, Datta Madamwar
Summary: This study investigates the occurrence, UV-induction, free radical scavenging potential, and photoprotective function of MAAs in Euhalothece sp.WR7. The results show the presence of two different UV-absorbing compounds, M2G and E-362, which have significant roles in UV protection and free radical scavenging. Furthermore, MAAs could be used as important UV absorbers in cosmetic sunscreens.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2023)
Article
Engineering, Environmental
Sisi Ye, Li Gao, Arash Zamyadi, Caitlin M. Glover, Ning Ma, Haiming Wu, Ming Li
Summary: The study found that cyanobacteria existed in the surrounding groundwater of Lake Taihu in China and determined the mechanism of cyanobacteria spreading through groundwater, with Microcystis having strong penetration capabilities. In addition, it was also discovered that cyanobacteria and their toxins had low concentrations in the groundwater.
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
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
Engineering, Environmental
Zhen Yang, Fanxiang Kong, Xiaoli Shi, Yang Yu, Min Zhang
JOURNAL OF HAZARDOUS MATERIALS
(2015)
Article
Food Science & Technology
Zhen Yang, Fanxiang Kong
Article
Environmental Sciences
Zhen Yang, Fanxiang Kong, Min Zhang
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2016)
Article
Engineering, Environmental
Zhen Yang, Min Zhang, Xiaoli Shi, Fanxiang Kong, Ronghua Ma, Yang Yu
Article
Engineering, Environmental
Yang Zhang, Jie Wang, Fei Gao, Yongsheng Chen, Hongwei Zhang
Article
Environmental Sciences
Zhen Yang, Riley P. Buley, Edna G. Fernandez-Figueroa, Mario U. G. Barros, Soorya Rajendran, Alan E. Wilson
ENVIRONMENTAL POLLUTION
(2018)
Article
Limnology
Zhen Yang, Fanxiang Kong, Zhou Yang, Min Zhang, Yang Yu, Shanqin Qian
ANNALES DE LIMNOLOGIE-INTERNATIONAL JOURNAL OF LIMNOLOGY
(2009)
Article
Limnology
Yang Zhen, Kong Fanxiang
CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
(2013)
Article
Marine & Freshwater Biology
Zhen Yang, Fanxiang Kong, Min Zhang, Zhou Yang, Yang Yu, Shanqin Qian
INTERNATIONAL REVIEW OF HYDROBIOLOGY
(2009)
Article
Limnology
Zhen Yang, Fanxiang Kong
JOURNAL OF LIMNOLOGY
(2012)
Article
Environmental Sciences
Zhen Yang, Min Zhang, Yang Yu, Xiaoli Shi
Article
Ecology
Zhen Yang, Xiaoli Shi, Yang Yu, Min Zhang
Summary: The dominant bloom-forming cyanobacterial population in Lake Taihu over the past two decades has been Microcystis. This study conducted an annual investigation of Microcystis colonies, focusing on their size, morphospecies, and viability, from 2020 to 2021, in order to understand the temporal and spatial variation in their characteristics and key environmental factors. The average colony diameter ranged from 81.12 to 499.54 μm across all sites during the investigation. The main dominant morphotypes were Microcystis flos-quae, Microcystis aeruginosa, Microcystis novacekii, and Microcystis wesenbergii, which were primarily influenced by pH, TDP, and temperature. While there was no significant correlation between colony viability and environmental factors, there were notable temporal differences in colony viability, with lower viability observed in autumn, spring, and July.