Phenotypic and toxicological characterization of toxic Nodularia spumigena from a freshwater lake in Turkey

Akçaalan, Reyhan; Mazur‐Marzec, Hanna; Zalewska, Anna; Albay, Meriç

doi:10.1016/j.hal.2008.06.007

Cited by 46 publications

(32 citation statements)

References 29 publications

(24 reference statements)

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“…Microcystis species together with P. agardhii formed blooms in eutrophic environment, such as Manyas, Küçükçekmece and Taşkısı Lake. Nostocalen Cyanobacteria species, on the other hand, prefer alkaline, meso-eutrophic waters of İznik Lake (Akçaalan et al, 2009(Akçaalan et al, , 2014b. Especially Nodularia spumigena is an euryhaline species living in hyposaline to brackish waters in Turkey (Kocasari et al, 2015;Kızılkaya et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

“…İznik Lake, located in the southeast of Marmara region, is the fifth biggest lake in Turkey. Cyanobacterial blooms occured because of heavy nutrient loading (Albay et al, 2003a;Akçaalan et al, 2006;Tas and Gonulol, 2007 (Akçaalan et al, 2006;Akçaalan et al, 2009). Sapanca Lake is an oligomesotrophic lake and Planktothrix rubescens blooms have been observed in the metalimnion of the lake since the 1980s (Akçaalan et al, 2006).…”

Section: Sampling Sitesmentioning

confidence: 99%

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Molecular detection of hepatotoxic cyanobacteria in inland water bodies of the Marmara Region, Turkey

et al. 2017

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Blooms of cyanobacteria are an increasingly frequent phenomenon in freshwater ecosystems worldwide as a result of eutrophication. Many species can produce hepatotoxins that cause severe health hazards to humans. The aim of this study was to identify the bloom forming cyanobacteria species by molecular methods and to amplify genes responsible for hepatotoxin biosynthesis from the environmental samples and isolated strains of cyanobacteria from Küçükçekmece Lagoon, Sapanca, İznik, Manyas and Taşkısı Lakes. A total of 10 bloom samples and 11 isolated strains were examined and Microcystis spp., Planktothrix spp., Nodularia spumigena, Anabaenopsis elenkinii, Sphaerospermopsis aphanizomenoides, Cylindrospermopsis raciborskii were identified. Hepatotoxin genes were detected in 60% of the bloom samples and 45% of the strains. Two Microcystis strains were obtained from Küçükçekmece Lagoon. While the strain assigned to Microcystis flosaquae was non-toxic, Microcystis aeruginosa strain produced microcystin. According to PCR results, the M. aeruginosa and Planktothrix agardhii bloom samples of Küçükçekmece Lagoon contained the microcystin synthetase gene E (mcyE) indicative of microcystin production, however, no microcystin was detected by HPLC. The mcyE gene was also found in Microcystis wesenbergii isolated from Taşkısı Lake, and in all Planktothrix rubescens bloom samples from Sapanca Lake. To our knowledge, this is the first detailed study for identifiying different toxic cyanobacteria species and their hepatotoxin production from several waterbodies in Turkey using molecular methods.

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Section: Discussionmentioning

confidence: 99%

Section: Sampling Sitesmentioning

confidence: 99%

Molecular detection of hepatotoxic cyanobacteria in inland water bodies of the Marmara Region, Turkey

et al. 2017

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“…However, recently nodularin was found also in aquatic ecosystems in Turkey Sahindokuyucu Kocasari et al, 2015). Moreover, Nodularia spumigena Mertens ex Bornet & Flahault, a NOD-producer, was recently observed not only in brackish waters but also in freshwater lakes (Akcaalan et al, 2009).…”

Section: Occurrence Of Cyanobacteria and Cyanotoxins And Methods Formentioning

confidence: 99%

Toxic cyanobacteria and cyanotoxins in European waters – recent progress achieved through the CYANOCOST Action and challenges for further research

et al. 2017

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This review aims to summarise the outcomes of some recent European research concerning toxic cyanobacteria and cyanotoxins, with an emphasis on developments within the framework of the CYANOCOST Action: COST Action ES1105, Cyanobacterial Blooms and Toxins in Water Resources: Occurrence, Impacts and Management. Highlights of the Action include phycological and ecological studies, development of advanced techniques for cyanotoxin analysis, elucidation of cyanotoxin modes of action, management techniques to reduce cyanobacterial mass development, and research on methods and practices for cyanotoxin removal during drinking water treatment. The authors have identified a number of gaps in knowledge. Proposed directions for future research on toxic cyanobacteria and cyanotoxins are also discussed.

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“…The Cyanophyta Nodularia spumigena Mertens (N. spumigena) is a filamentous, heterocystous, nitrogenfixing species known to thrive in brackish and saline waters. There are several reports related to Nodularia bloom in fresh water lake of Turkey (Akcaalan et al, 2009), estuaries of Australia (Blackburn et al, 1996), brackish lakes of Australia and New Zealand (Heresztyn and Nicholson, 1997;Woodward and Shulmeister, 2005), saline lakes and lagoons of USA (Beutel et al, 2001; Galat et al, 1990), Mexico (Falcon et al, 2002), Uruguay (Perez et al, 1999) and Baltic Sea (Sivonen et (Soloviev, 2005). This phenomenon repeated within a short period of time in coastal waters of the southwestern of Caspian Sea in 2009 as reported by the Ecological Aquatic Center of the Caspian Sea (EACCS).…”

Section: Introductionmentioning

confidence: 99%

The Study of Nodularia Spumigena Bloom Event in the Southern Caspian Sea

Asrollahzadeh¹

2011

Appl Ecol Env Res

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Abstract. Despite the increase in phytoplankton population in the Caspian Sea, there is few detail study regarding bloom of some species in the recent years. Previous studies have announced the bloom-forming Cyanophyta Nodularia spumigena Mertens to the Caspian Sea. In this study, we attempt to understand the bloom events that are involved Nodularia spumigena population and environmental parameters in the Iranian coastal water in 2009. The preliminary results suggested that Nodularia spumigena observed in the Caspian Sea in some seasons at different depths but bloom formation starting from middle of summer and reach a maximum in the early of autumn at the surface. Result of this study also showed that phytoplankton assemblage comprised of 46 species after bloom. Bacillariophyta had the highest number of species (17) follow by Pyrrophyta (14), Cyanophyta and Chlorophyta (6) and Euglenophyta (3). But, phytoplankton species of bloom sample is classified in three groups: Cyanophyta, Pyrrophyta and Bacillariophyta which Cyanophyta dominated over the other groups of algae and formed more than 98% and 96% of phytoplankton abundance and biomass, respectively. As of now, the pattern of dominant and frequent species in the Caspian Sea indicated that the health of the water body and aquatic organisms are at risk.

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Phenotypic and toxicological characterization of toxic Nodularia spumigena from a freshwater lake in Turkey

Cited by 46 publications

References 29 publications

Molecular detection of hepatotoxic cyanobacteria in inland water bodies of the Marmara Region, Turkey

Molecular detection of hepatotoxic cyanobacteria in inland water bodies of the Marmara Region, Turkey

Toxic cyanobacteria and cyanotoxins in European waters – recent progress achieved through the CYANOCOST Action and challenges for further research

The Study of Nodularia Spumigena Bloom Event in the Southern Caspian Sea

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