Harmful Cyanobacterial Blooms: Biological Traits, Mechanisms, Risks, and Control Strategies

Annual Review of Environment and Resources, Journal Year: 2023, Volume and Issue: 48(1), P. 123 - 147

Published: Sept. 8, 2023

Harmful cyanobacterial blooms (CyanoHABs) impact lakes, estuaries, and freshwater reservoirs worldwide. The duration, severity, spread of CyanoHABs have markedly increased over the past decades will likely continue to increase. This article addresses universal phenomena occurring in many ecosystems Based on analysis ecophysiological traits bloom-forming cyanobacteria their interactions with environmental processes, we summarize decipher driving forces leading initiation, outbreak, persistence blooms. Due coupling effects eutrophication, rising CO 2 levels global warming, a multidisciplinary joint research approach is critical for better understanding CyanoHAB phenomenon its prediction, remediation, prevention. There an urgent need evaluate guide proper use bloom control techniques at large scales, using science-based environmentally friendly approaches.

Language: Английский

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Impact of Marine Chemical Ecology Research on the Discovery and Development of New Pharmaceuticals

Marine Drugs, Journal Year: 2023, Volume and Issue: 21(3), P. 174 - 174

Published: March 9, 2023

Diverse ecologically important metabolites, such as allelochemicals, infochemicals and volatile organic chemicals, are involved in marine organismal interactions. Chemically mediated interactions between intra- interspecific organisms can have a significant impact on community organization, population structure ecosystem functioning. Advances analytical techniques, microscopy genomics providing insights the chemistry functional roles of metabolites This review highlights targeted translational value several chemical ecology-driven research studies their sustainable discovery novel therapeutic agents. These ecology-based approaches include activated defense, allelochemicals arising from interactions, spatio-temporal variations phylogeny-based approaches. In addition, innovative techniques used mapping surface well metabolite translocation within holobionts summarized. Chemical information related to maintenance symbioses biosyntheses specialized compounds be harnessed for biomedical applications, particularly microbial fermentation compound production. Furthermore, climate change ecology organisms—especially production, functionality perception allelochemicals—and its implications drug efforts will presented.

Language: Английский

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Allelochemicals-mediated interaction between algae and bacteria: Direct and indirect contact

Bioresource Technology, Journal Year: 2024, Volume and Issue: 398, P. 130525 - 130525

Published: March 2, 2024

Language: Английский

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The Potential of Allelochemicals from Microalgae for Biopesticides

Plants, Journal Year: 2023, Volume and Issue: 12(9), P. 1896 - 1896

Published: May 6, 2023

Improvements in agricultural productivity are required to meet the demand of a growing world population. Phytopathogens, weeds, and insects challenges production. The toxicity widespread application persistent synthetic pesticides poses major threat human ecosystem health. Therefore, sustainable strategies control pests essential for systems enhance within green paradigm. Allelochemicals less persistent, safer, friendly alternative efficient pest management, as they tend be toxic non-target organisms more easily degradable. Microalgae produce great variety allelopathic substances whose biocontrol potential against insects, phytopathogenic fungi bacteria has received much attention. This review provides up-to-date information critical perspective on allelochemicals from microalgae their biopesticides.

Language: Английский

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It’s a Small World After All: The Remarkable but Overlooked Diversity of Venomous Organisms, with Candidates Among Plants, Fungi, Protists, Bacteria, and Viruses

Toxins, Journal Year: 2025, Volume and Issue: 17(3), P. 99 - 99

Published: Feb. 20, 2025

Numerous organisms, including animals, plants, fungi, protists, and bacteria, rely on toxins to meet their needs. Biological have been classified into three groups: poisons transferred passively without a delivery mechanism; toxungens delivered the body surface an accompanying wound; venoms conveyed internal tissues via creation of wound. The distinctions highlight evolutionary pathways by which acquire specialized functions. Heretofore, term venom has largely restricted animals. However, careful consideration reveals surprising diversity organisms that deploy toxic secretions strategies remarkably analogous those venomous plants inject pathogenic microorganisms animals through stinging trichomes, thorns, spines, prickles, raphides, silica needles. Some protect themselves ants as symbionts. Certain fungi deliver hyphae infected hosts for nutritional and/or defensive purposes. Fungi can possess penetration structures, sometimes independent hyphae, create wound facilitate toxin delivery. protists discharge harpoon-like extrusomes (toxicysts nematocysts) penetrate prey toxins. Many bacteria secretion systems or contractile injection introduce targets wounds. Viruses, though not “true” according many, include group (the bacteriophages) nucleic acids virion proteins host cells inflict damage rivaling conventional venoms. Collectively, these examples suggest systems—and even toxungen systems, we briefly address—are much more widespread than previously recognized. Thus, our understanding novelty focused only small proportion organisms. With regard this form deployment, words Sherman Brothers in Disney’s iconic tune, It’s Small World, could hardly be apt: “There’s so share, it’s time we’re aware, world after all”.

Language: Английский

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Unraveling the impact of phytoplankton secretions on the behavior of metal-containing engineered nanoparticles in aquatic environment

Frontiers in Environmental Science, Journal Year: 2024, Volume and Issue: 11

Published: Jan. 4, 2024

Based on the up-to-date knowledge we critically discuss current understanding of influence compounds secreted by phytoplankton species fate metal-containing engineered nanoparticles (ENPs) in aquatic settings. Different biomolecules, such as extracellular polymeric substances (EPS) and exometabolites play important, yet to elucidate, role dissolution, colloidal stability, transformations biouptake ENPs thus shape their behavior within phycosphere. Phytoplankton secretions can also mediate synthesis from dissolved ions reducing metals capping newly formed ENPs. However, environmental significance this process remains be demonstrated. Exposure triggers changes secretion biomolecules. An improved regulatory mechanism exometabolite due ENP exposure is essential for deciphering ENPs-phytoplankton interactions. Unveiling biomolecules modulating central understudying phytoplankton-ENPs feedbacks, drivers mechanisms environment.

Language: Английский

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Allelopathic Potential of the Cyanotoxins Microcystin-LR and Cylindrospermopsin on Green Algae

Plants, Journal Year: 2023, Volume and Issue: 12(6), P. 1403 - 1403

Published: March 22, 2023

Allelopathic interactions are widespread in all aquatic habitats, among groups of primary biomass producers, including cyanobacteria. Cyanobacteria producers potent toxins called cyanotoxins, whose biological and ecological roles, their allelopathic influence, still incompletely understood. The potential the cyanotoxins microcystin-LR (MC-LR) cylindrospermopsin (CYL) on green algae (Chlamydomonas asymmetrica, Dunaliella salina, Scenedesmus obtusiusculus) was established. Time-dependent inhibitory effects growth motility exposed to were detected. Changes morphology (cell shape, granulation cytoplasm, loss flagella) also observed. MC-LR CYL found affect photosynthesis varying degrees Chlamydomonas obtusiusculus, affecting chlorophyll fluorescence parameters such as maximum photochemical activity (Fv/Fm) photosystem II (PSII), non-photochemical quenching (NPQ), quantum yield unregulated energy dissipation Y(NO) PSII. In context ongoing climate change associated expectations increased frequency cyanobacterial blooms released our results demonstrated possible role competing autotrophs phytoplankton communities.

Language: Английский

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The allelopathy and underlying mechanism of Skeletonema costatum on Karenia mikimotoi integrating transcriptomics profiling

Aquatic Toxicology, Journal Year: 2021, Volume and Issue: 242, P. 106042 - 106042

Published: Nov. 22, 2021

Language: Английский

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Long-Term Cultivation of a Native Arthrospira platensis (Spirulina) Strain in Pozo Izquierdo (Gran Canaria, Spain): Technical Evidence for a Viable Production of Food-Grade Biomass

Processes, Journal Year: 2021, Volume and Issue: 9(8), P. 1333 - 1333

Published: July 30, 2021

Microalgae cultivation is a promising alternative to traditional agriculture in arid—semi-arid areas. The aim of this study assess the viability long-term native Arthrospira platensis Gran Canaria. Maximum culture productivity (0.08 g/L/day) and optimal concentration range (0.6–0.9 g/L) were firstly determined 8000 L raceway under greenhouse. Afterwards, stable 0.06 g/L/day (6.0 g/m2/day) was obtained by reusing medium during 26 days cultivation, with consistent biomass biochemical composition. Outdoor temperature daily solar irradiation ranged between 17.9–30.7 °C 79.2–274.8 W/m2, while pH salinity 9.42–10.77 11.2–14.9 g/L, respectively. Protein (>60%), potassium (1.8 g/100 g) C-phycocyanin (7.2%) content high-range commercial Spirulina, which makes BEA 1257B for food extraction natural pigments/antioxidants. dried complies international standards human consumption, because low heavy metal no pathogens presence. Product quality can be improved reducing ash (≃12%) sodium (1.5%) through washing optimization and/or further dewatering step. Other microorganisms prevented high alkaline conditions mild chemical treatments. These results pave way sustainable microalgae-based blue bioeconomy Canary Islands.

Language: Английский

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Quantitative and qualitative variability of airborne cyanobacteria and microalgae and their toxins in the coastal zone of the Baltic Sea

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 826, P. 154152 - 154152

Published: Feb. 25, 2022

Language: Английский

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