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
Cytotoxic and non-cytotoxic exometabolites of the cyanobacterium Nostoc insulare
Rainer-B. Volk,Sabine Mundt +1 more
TL;DR: Besides the known exometabolite 4,4′-dihydroxybiphenyl (I), two more compounds, the β-carboline 9H-pyrido(3,4-b)indole (norharmane, II) and N,N′-(4,5-dimethyl-1,2-phenylene)bis-acetamide (III), were discovered.
Journal ArticleDOI
Comparative gene expression of PSP-toxin producing and non-toxic Anabaena circinalis strains.
TL;DR: The BGGM1 DNA microarray, used in this study, was shown to be suitable for gene expression studies in cultured toxic cyanobacteria and allowed the analysis of gene transcripts associated with surface scum formation by toxic A. circinalis.
Journal ArticleDOI
Proteomic Alterations of Antarctic Ice Microalga Chlamydomonas sp. Under Low-Temperature Stress
TL;DR: Well-resolved and reproducible 2-DE patterns of both normal and low temperature-stressed cells were acquired and new protein spots induced by low temperature were identified with peptide mass fingerprinting based on matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) and database searching.
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