Journal ArticleDOI
Allelopathy in freshwater cyanobacteria
TLDR
The role of allelopathy in cyanobacteria ecology is still not well understood, and its clarification should benefit from carefully designed field studies, chemical characterization of allelochemicals and new methodological approaches at the “omics” level.Abstract:
Freshwater cyanobacteria produce several bioactive secondary metabolites with diverse chemical structure, which may achieve high concentrations in the aquatic medium when cyanobacterial blooms occur. Some of the compounds released by cyanobacteria have allelopathic properties, influencing the biological processes of other phytoplankton or aquatic plants. These kinds of interactions are more easily detectable under laboratory studies; however their ecological relevance is often debated. Recent research has discovered new allelopathic properties in some cyanobacteria species, new allelochemicals and elucidated some of the allelopathic mechanisms. Ecosystem-level approaches have shed some light on the factors that influence allelopathic interactions, as well as how cyanobacteria may be able to modulate their surrounding environment by means of allelochemical release. Nevertheless, the role of allelopathy in cyanobacteria ecology is still not well understood, and its clarification should benefit from carefully designed field studies, chemical characterization of allelochemicals and new methodological approaches at the "omics" level.read more
Citations
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Journal ArticleDOI
Comparison of cyanobacterial and green algal growth rates at different temperatures
Miquel Lürling,Fassil Eshetu,Fassil Eshetu,Elisabeth J. Faassen,Sarian Kosten,Sarian Kosten,Vera L. M. Huszar +6 more
TL;DR: The results indicate that climate warming might not be as a result of higher growth rates of cyanobacteria compared with their chlorophyte competitors, and can more likely be attributed to their ability to migrate vertically and prevent sedimentation in warmer and more strongly stratified waters and to their resistance to grazing, especially when warming reduces zooplankton body size.
Journal ArticleDOI
Dissolved organic matter (DOM) release by phytoplankton in the contemporary and future ocean
TL;DR: There is a need for research to determine how changes in the partitioning of primary production between dissolved and particulate phases will have bottom-up effects on ecosystem structure and function and how these changes affect the fate of organic matter in the ocean.
Journal ArticleDOI
The cyanotoxin-microcystins: current overview
TL;DR: Overall, this review emphasizes the current understanding of MCs with their occurrence, geographical distribution, accumulation in the aquatic as well as terrestrial ecosystems, biosynthesis, climate-driven changes in their synthesis, stability and current aspects on its degradation, analysis, mode of action and their ecotoxicological effects.
Journal ArticleDOI
Cylindrospermopsis raciborskii: review of the distribution, phylogeography, and ecophysiology of a global invasive species.
TL;DR: An up-to-date account of the distribution, phylogeography, ecophysiology, as well some preliminary reports of the impact of C. raciborskii in different organisms are presented.
Journal ArticleDOI
The chemical ecology of cyanobacteria
Pedro N. Leão,Niclas Engene,Agostinho Antunes,William H. Gerwick,William H. Gerwick,Vitor Vasconcelos +5 more
TL;DR: This review covers the literature on the chemically mediated ecology of cyanobacteria, including ultraviolet radiation protection, feeding-deterrence, allelopathy, resource competition, and signalling.
References
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Journal ArticleDOI
Allelopathic interactions between phytoplankton species : the roles of heterotrophic bacteria and mixing intensity
Florence D. Hulot,Jef Huisman +1 more
TL;DR: Analyzing a model where phytoplankton species, bacteria, nutrients, and a toxin are linked through material cycling predicts that weak mixing, especially when combined with the presence of bacteria unable to degrade allelelopathic compounds, will favor the development of allelopathic phy Topolankton populations.
Journal ArticleDOI
Comparison of the light‐limited growth of the nitrogen‐fixing cyanobacteria Anabaena and Aphanizomenon
TL;DR: When both species were grown together, Anabaena became dominant and seemed to be the superior competitor for light, and the possible effects of release of allelopathic compounds, or dynamic aspects of light supply, are discussed.
Journal ArticleDOI
Screening of microalgal culture media for the presence of algicidal compounds and isolation and identification of two bioactive metabolites, excreted by the cyanobacteria Nostoc insulare and Nodularia harveyana
TL;DR: The main algicidal compound in culture medium extracts of Nostoc insulare was identified as 4,4′-dihydroxybiphenyl, a known indole alkaloid and the possible applicability of both compounds as therapeutics or as useful agents for removing cyanobacterial water blooms or for developing new antifouling systems is discussed.
Journal ArticleDOI
Kasumigamide, an antialgal peptide from the cyanobacterium Microcystis aeruginosa.
Keishi Ishida,Masahiro Murakami +1 more
TL;DR: Kasumigamide (1), a novel antialgal tetrapeptide containing an N-terminal alpha-hydroxy acid, was isolated from the freshwater cyanobacterium Microcystis aeruginosa and showed an antialGal activity against the green alga Chlamydomonas neglecta.
Journal ArticleDOI
Proteomic characterization of acid stress response in Synechocystis sp. PCC 6803.
TL;DR: 14 novel proteins, hitherto unknown from the periplasmic space of Synechocystis are identified, which provide ideal targets for further studies in understanding pH stress response in cyanobacteria.
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