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Wyświetlanie 1-3 z 3
Tytuł:
Toxic cyanobacteria blooms in the Lithuanian part of the Curonian Lagoon
Autorzy:
Paldaviciene, A.
Mazur-Marzec, H.
Razinkovas, A.
Powiązania:
https://bibliotekanauki.pl/articles/48516.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Baltic Sea
blue-green alga
Curonian Lagoon
Microcystis aeruginosa
Nodularia spumigena
Cyanoprokaryota
bloom
microcystin
Lithuania
nodularin
Opis:
The phenomenon of cyanobacteria (blue-green algae) blooms in the Baltic and the surrounding freshwater bodies has been known for several decades.The presence of cyanobacterial toxic metabolites in the Curonian Lagoon has been investigated and demonstrated for the first time in this work (2006–07). Microcystis aeruginosa was the most common and widely distributed species in the 2006 blooms. Nodularia spumigena was present in the northern part of the Curonian Lagoon, following the intrusion of brackish water from the Baltic Sea; this is the first time that this nodularin-(NOD)-producing cyanobacterium has been recorded in the lagoon.W ith the aid of high-performance liquid chromatography (HPLC), four microcystins (MC-LR, MC-RR, MC-LY, MC-YR) and nodularin were detected in 2006.T he presence of these cyanobacterial hepatotoxic cyclic peptides was additionally confirmed by enzyme-linked immunosorbent assay (ELISA) and protein phosphatase inhibition assay (PP1).Micr ocystin-LR, the most frequent of them, was present in every sample at quite high concentrations (from <0.1 to 134.2 μg dm−3).I n 2007, no cyanobacterial bloom was recorded and cyanotoxins were detected in only 4% of the investigated samples.A comparably high concentration of nodularin was detected in the northern part of the Curonian Lagoon.I n one sample dimethylated MC-RR was also detected (concentration 7.5 μg dm−3).
Źródło:
Oceanologia; 2009, 51, 2; 203-216
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Morphological, genetic, chemical and ecophysiological characterisation of two Microcystis aeruginosa isolates from the Vistula Lagoon, Southern Baltic
Autorzy:
Mazur-Marzec, H.
Browarczyk-Matusiak, G.
Forycka, K.
Kobos, J.
Plinski, M.
Powiązania:
https://bibliotekanauki.pl/articles/48489.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Microcystis aeruginosa
Cyanoprokaryota
microcystin
mcy gene
morphology
Vistula Lagoon
Baltic Sea
eutrophic water
bloom
16S rRNA sequence
internal transcribed spacer
Opis:
The Vistula Lagoon (southern Baltic Sea) is a shallow and highly eutrophic water body, with frequent blooms of cyanobacteria dominated by Microcystis and Anabaena species. Two Microcystis strains, MK10.10 and MAKR0205, isolated from the lagoon were characterised in this work. The morphology of the isolates differed significantly with respect to cell size and their ability to form aggregates. Based on the 16S rRNA sequence and 16S-23S internal transcribed spacer (ITS) sequence, both isolates were classified as Microcystis aeruginosa. However, only one isolate, MK10.10, possessed the mcy genes responsible for microcystin biosynthesis and only this strain produced microcystins. The effects of environmental factors, such as light, temperature and salinity, on toxin production turned out to be minor. Under the culture conditions used in the experiments, the biomass of the toxic MK10.10 was always lower. Hybrid quadrupole-time-of-flight liquid chromatography/tandem mass spectrometry (QTOF-LC/MS/MS) was used to elucidate the structure of the microcystin (MC) variants produced by MK10.10. Based on molecular ion and fragmentation spectra, the toxins were identified as MC-LR, MC-VR and MC- HIlR. Our study confirmed that some morphological criteria could be useful in preliminarily assessing the potential toxicity of a Microcystis bloom.
Źródło:
Oceanologia; 2010, 52, 1; 127-146
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bioaccumulation of microcystins in invasive bivalves: A case study from the boreal lagoon ecosystem
Autorzy:
Paldaviciene, A.
Zaiko, A.
Mazur-Marzec, H.
Razinkovas-Baziukas, A.
Powiązania:
https://bibliotekanauki.pl/articles/47622.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
microcystin
mussel tissue
zebra mussel
bioaccumulation
bivalve
Dreissena polymorpha
brackish water
eutrophic water
Curonian Lagoon
Baltic Sea
environment condition
biomonitoring
protein phosphatase
ELISA test
Źródło:
Oceanologia; 2015, 57, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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