Biodegradation of nodularin and effects of the toxin on bacterial isolates from the Gulf of Gdańsk

Mazur‐Marzec, Hanna; Toruńska, Anna; Błońska, Monika J.; Moskot, Marta; Plinski, M.; Jakóbkiewicz‐Banecka, Joanna; Węgrzyn, Grzegorz

doi:10.1016/j.watres.2009.03.042

Cited by 35 publications

(19 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…spumigena is often found densely colonized by heterotrophic bacteria, but it has also been shown that nodularin inhibit growth of prokaryotic cells [33]. In our study, the growth rate of Aphanizomenon sp.…”

Section: Discussionsupporting

confidence: 48%

Interspecific Resource Competition—Combined Effects of Radiation and Nutrient Limitation on Two Diazotrophic Filamentous Cyanobacteria

et al. 2011

View full text Add to dashboard Cite

The cyanobacterial blooms in the Baltic Sea are dominated by diazotrophic cyanobacteria, the potentially toxic species Aphanizomenon sp. and the toxic species Nodularia spumigena. The seasonal succession with peaks of Aphanizomenon sp., followed by peaks of N. spumigena, has been explained by the species-specific niches of the two species. In a three-factorial outdoor experiment, we tested if nutrient and radiation conditions may impact physiological and biochemical responses of N. spumigena and Aphanizomenon sp. in the presence or absence of the other species. The two nutrient treatments were f/2 medium without NO (3) (-) (-N) and f/2 medium without PO (4) (3-) (-P), and the two ambient radiation treatments were photosynthetic active radiation >395 nm (PAR) and PAR + UV-A + UV-B >295 nm. The study showed that Aphanizomenon sp. was not negatively affected by the presence of N. spumigena and that N. spumigena was better adapted to both N and P limitation in interaction with ultraviolet radiation (UVR, 280-400 nm). In the Baltic Sea, these physical conditions are likely to prevail in the surface water during summer. Interestingly, the specific growth rate of N. spumigena was stimulated by the presence of Aphanizomenon sp. We suggest that the seasonal succession, with peaks of Aphanizomenon sp. followed by peaks of N. spumigena, is a result from species-specific preferences of environmental conditions and/or stimulation by Aphanizomenon sp. rather than an allelopathic effect of N. spumigena. The results from our study, together with a predicted stronger stratification due to effects of climate change in the Baltic Sea with increased temperature and increased precipitation and increased UV-B due to ozone losses, reflect a scenario with a continuing future dominance of the toxic N. spumigena.

show abstract

Section: Discussionsupporting

confidence: 48%

Interspecific Resource Competition—Combined Effects of Radiation and Nutrient Limitation on Two Diazotrophic Filamentous Cyanobacteria

et al. 2011

View full text Add to dashboard Cite

show abstract

“…In field and experimental studies mimicking in situ conditions, bivalves and amphipods fed cyanobacteria perform better than when starved (Basen et al 2012 ; Gergs et al 2014 ; Fig. 4 ), and the nutritional quality of cyanobacterial matter improves with time through toxin breakdown by animals (Svensen et al 2005 ) or as a result of trophic upgrading by bacteria (Mazur-Marzec et al 2009 ) or metazoans (Basen et al 2013 ). Microbes contributing to such trophic upgrading should also transfer diazotrophic N to deposit-feeders (Fig.…”

Section: Translating Cyanobacteria-driven Primary Production Into Secmentioning

confidence: 99%

Nitrogen fixation by cyanobacteria stimulates production in Baltic food webs

Karlson

Duberg

Motwani

et al. 2015

AMBIO

103

View full text Add to dashboard Cite

Filamentous, nitrogen-fixing cyanobacteria form extensive summer blooms in the Baltic Sea. Their ability to fix dissolved N2 allows cyanobacteria to circumvent the general summer nitrogen limitation, while also generating a supply of novel bioavailable nitrogen for the food web. However, the fate of the nitrogen fixed by cyanobacteria remains unresolved, as does its importance for secondary production in the Baltic Sea. Here, we synthesize recent experimental and field studies providing strong empirical evidence that cyanobacterial nitrogen is efficiently assimilated and transferred in Baltic food webs via two major pathways: directly by grazing on fresh or decaying cyanobacteria and indirectly through the uptake by other phytoplankton and microbes of bioavailable nitrogen exuded from cyanobacterial cells. This information is an essential step toward guiding nutrient management to minimize noxious blooms without overly reducing secondary production, and ultimately most probably fish production in the Baltic Sea.Electronic supplementary materialThe online version of this article (doi:10.1007/s13280-015-0660-x) contains supplementary material, which is available to authorized users.

show abstract

“…The activity of cyanobacterial peptide toxins as antibacterial agent was tested in a few studies (Valdor andAboal 2007, Mazur-Marzec et al 2009). In an experiment with pure NOD, Gramnegative bacterial isolates from the Baltic were more sensitive to the toxin (Mazur-Marzec et al 2009). When extracts of other marine cyanobacteria (Synechocystis and Synechococcus) were used, it was mostly the growth of Gram-positive bacteria that was inhibited (Martins et al 2008).…”

Section: The Fate Of Cyanobacteria and Their Toxinsmentioning

confidence: 99%

Feeding ecology of the American crab Rhithropanopeus harrisii (Crustacea, Decapoda) in the coastal waters of the Baltic Sea

Hegele-Drywa

Normant²

2009

OCEANOLOGIA

View full text Add to dashboard Cite

Cyanobacteria, otherwise known as blue-green algae, are oxygenic, photosynthetic prokaryotes. They occur naturally in many fresh, marine and brackish waters worldwide and play an important role in global carbon and nitrogen cycles. In their long history, cyanobacteria have developed structures and mechanisms that enable them to survive and proliferate under different environmental conditions. In the Baltic Sea, the mass development of cyanobacteria is compounded by a high level of eutrophication. The dominant species in the Baltic, the filamentous Aphanizomenon flos-aquae and Nodularia spumigena, can fix dissolved atmospheric N 2 , as a result of which they can outcompete other phytoplankton organisms. Heterocystous, filamentous cyanobacteria also make a significant contribution The complete text of the paper is available at http://www.iopan.gda.pl/oceanologia/ 294 H. Mazur-Marzec, M. Pliński to the internal nutrient loading in the Baltic. The blooms of N. spumigena are of particular concern, as this cyanobacterium produces nodularin (NOD), a hepatotoxic peptide. The concentration of the toxin in the sea is regulated mainly by dilution with uncontaminated water, photolysis, sorption to sediments and microbial degradation. The transfer of the toxin in the Baltic trophic chain through zooplankton, mussels, fish and birds has been reported, but biodilution rather than bioconcentration has been observed. Cyanobacterial blooms are thought to pose a serious threat to the ecosystem. Their harmful effects are related to the occurrence of a high biomass, oxygen depletion, a reduction in biodiversity, and the production of toxic metabolites.

show abstract

Biodegradation of nodularin and effects of the toxin on bacterial isolates from the Gulf of Gdańsk

Cited by 35 publications

References 44 publications

Interspecific Resource Competition—Combined Effects of Radiation and Nutrient Limitation on Two Diazotrophic Filamentous Cyanobacteria

Interspecific Resource Competition—Combined Effects of Radiation and Nutrient Limitation on Two Diazotrophic Filamentous Cyanobacteria

Nitrogen fixation by cyanobacteria stimulates production in Baltic food webs

Feeding ecology of the American crab Rhithropanopeus harrisii (Crustacea, Decapoda) in the coastal waters of the Baltic Sea

Contact Info

Product

Resources

About