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Schlegel, Ines; Doan, Nga Thanh; Chazel, Nola de; Smith, Geoffrey D.

doi:10.1023/a:1008042619686

Cited by 96 publications

(13 citation statements)

References 27 publications

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“…Another member of the hapalindole family of natural products, the at-the-time known compound 12- epi -hapalindole E isonitrile ( 28 ), 88 was isolated from Fischerella muscicula as a result of a screening program for allelopathic activity by cyanobacteria towards green algae and other cyanobacteria. 89, 90 It was shown to have inhibitory activity towards a wide range of other organisms and cell lines. 90 Further studies revealed that 28 interacts directly with the RNA polymerase, preventing RNA chain elongation in Bacillus subtilis .…”

Section: Ecological Roles Played By Cyanobacterial Metabolitesmentioning

confidence: 99%

The chemical ecology of cyanobacteria

et al. 2012

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This review covers the literature on the chemically mediated ecology of cyanobacteria, including ultraviolet radiation protection, feeding-deterrence, allelopathy, resource competition, and signalling. To highlight the chemical and biological diversity of this group of organisms, evolutionary and chemotaxonomical studies are presented. Several technologically relevant aspects of cyanobacterial chemical ecology are also discussed.

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Section: Ecological Roles Played By Cyanobacterial Metabolitesmentioning

confidence: 99%

The chemical ecology of cyanobacteria

et al. 2012

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“…Antimicrobial activity of cyanobacteria refer almost to filamentous strains belonging to a wide range of genera [6,[8][9][10]14,26]. Rao [6], working on the production of antibiotic compounds by filamentous forms of cyanobacteria, referred that the ability to produce antibiotic compounds might prevent bacterial contamination of the filaments and consequently pathogenic bacterial colonization.…”

Section: Resultsmentioning

confidence: 99%

“…Studies on marine species are more restricted and are specially related to filamentous forms from tropical regions [10], Baltic Sea [12] and Mediterranean Sea [9]. In this work we describe biological activities of marine cyanobacteria strains belonging to the genera Synechocystis and Synechococcus isolated from the temperate Atlantic coast of Portugal.…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial and Cytotoxic Assessment of Marine Cyanobacteria - Synechocystis and Synechococcus

Martíns

2008

Mar. Drugs

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Aqueous extracts and organic solvent extracts of isolated marine cyanobacteria strains were tested for antimicrobial activity against a fungus, Gram-positive and Gram-negative bacteria and for cytotoxic activity against primary rat hepatocytes and HL-60 cells. Antimicrobial activity was based on the agar diffusion assay. Cytotoxic activity was measured by apoptotic cell death scored by cell surface evaluation and nuclear morphology. A high percentage of apoptotic cells were observed for HL-60 cells when treated with cyanobacterial organic extracts. Slight apoptotic effects were observed in primary rat hepatocytes when exposed to aqueous cyanobacterial extracts. Nine cyanobacteria strains were found to have antibiotic activity against two Gram-positive bacteria, Clavibacter michiganensis subsp. insidiosum and Cellulomonas uda. No inhibitory effects were found against the fungus Candida albicans and Gram-negative bacteria. Marine Synechocystis and Synechococcus extracts induce apoptosis in eukaryotic cells and cause inhibition of Gram-positive bacteria. The different activity in different extracts suggests different compounds with different polarities.

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“…Studies have shown that cyanobacteria can also affect the growth of some Chlorophyceae and Charophyceae species [13,[50][51][52][58][59][60][61][62][63] and picoplanktonic cyanobacteria deserved special attention here.Śliwińska-Wilczewska et al [22] demonstrated that both the addition of Synechococcus sp. cell-free filtrate and co-culture inhibited the growth of Stichococcus bacillaris Nägeli.…”

Section: Discussionmentioning

confidence: 99%

The Importance of Allelopathic Picocyanobacterium Synechococcus sp. on the Abundance, Biomass Formation, and Structure of Phytoplankton Assemblages in Three Freshwater Lakes

Bubak

Śliwińska‐Wilczewska

Głowacka

et al. 2020

Toxins

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The contribution of picocyanobacteria to summer phytoplankton blooms, accompanied by an ecological crisis, is a new phenomenon in Europe. This issue requires careful investigation. We studied allelopathic activity of freshwater picocyanobacterium Synechococcus sp. on phytoplankton assemblages from three freshwater lakes. In this study, the allelopathic activity of the Synechococcus sp. on the total abundance, biomass, as well as structure of the phytoplankton assemblages were investigated. Our results indicated that addition of exudates obtained from Synechococcus sp. affected the number of cells and biomass of the phytoplankton communities; the degree of inhibition or stimulation was different for each species, causing a change in the phytoplankton abundance and dominance during the experiment. We observed that some group of organisms (especially cyanobacteria from the genus Aphanothece, Limnothrix, Microcystis, and Synechococcus) showed tolerance for allelopathic compounds produced and released by Synechococcus sp. It is also worth noting that in some samples, Bacillariophyceae (e.g., Amphora pediculus, Navicula pygmaea, and Nitzschia paleacea) were completely eliminated in the experimental treatments, while present in the controls. This work demonstrated that the allelopathic activity exhibited by the Synechococcus sp. is probably one of the major competitive strategies affecting some of the coexisting phytoplankton species in freshwater ecosystems. To our best knowledge this is the first report of the allelopathic activity of Synechococcus sp. in the freshwater reservoirs, and one of the few published works showing allelopathic properties of freshwater picocyanobacteria on coexisting phytoplankton species.

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Cited by 96 publications

References 27 publications

The chemical ecology of cyanobacteria

The chemical ecology of cyanobacteria

Antimicrobial and Cytotoxic Assessment of Marine Cyanobacteria - Synechocystis and Synechococcus

The Importance of Allelopathic Picocyanobacterium Synechococcus sp. on the Abundance, Biomass Formation, and Structure of Phytoplankton Assemblages in Three Freshwater Lakes

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