Year-end Sale % OFF 
Abstract
In recent decades, harmful algal blooms (HABs) have been significantly affecting environments, aquatic ecosystems, and human health, as well as damaging economies, especially near rivers and lakes, and in coastal regions. Microcystis and Anabaena are two genera of harmful cyanobacteria that will often predominate during toxic microalgal blooms. In this study, we employ a method for control and mitigation of HABs by microalgal cell instability using different types of aminoclays (ACs). Allelopathic interactions between the two strains of algae are studied in mono-culture, co-culture, and filtrated cell-free medium in the presence of the ACs. The growth of the Anabaena strain is significantly reduced by the cyanobacterial strains in the co-culture media, and both are significantly affected by the Acs’-enhanced algicidal activity. Anabaena sp. KVSF7 shows higher sensitivity against the ACs than does Microcystis sp. KW. In this way, the algicidal activity of ACs is harnessed, the effects of which are in the order of aluminum aminoclay (AlAC) > magnesium aminoclay (MgAC) > calcium aminoclay (CaAC). The ammonium sites in the ACs carry positive charges to induce instability of HABs along with the electrostatic attraction between algal cells and AC. Therefore, the utilization of the algicidal activity of the ACs can effectively reduce HABs, especially on cyanobacterial blooms.
Highlights
Introduction“Tides” of cyanobacterial blooms disrupt ecosystems, often leading to the mass death of affected organisms
Using magnesium aminoclay (MgAC), it has been investigated with selective algicidal activity of redtides in seawater [19] and both in increase of cell size and lipid contents in green microalgal culturing systems [26,27]
M.S. and A.S. were mono-cultured separately under the conditions specified in Section 2.3 and in the presence of increasing concentrations of MgAC
Summary
“Tides” of cyanobacterial blooms disrupt ecosystems, often leading to the mass death of affected organisms. They produce toxins, reactive oxygen species (ROS), which compete with organisms by hindering their respiratory systems and consuming and depleting oxygen and nutrients [1,2,3,4,5]. The problem posed by cyanobacterial blooms is becoming more frequent and urgent in rivers and lakes, especially in coastal areas. They cause enormous damage to countries’ economies, which were more than 1 billion dollars and 1 million dollars per year in Japan and Korea, respectively [1,6,7,8,9]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
