Results 21 to 30 of about 5,317 (237)

Nutrient-driven regulation of saxitoxin gene expression and toxin production in Raphidiopsis raciborskii (Cyanobacteria). [PDF]

J Phycol
Abstract Raphidiopsis raciborskii is a diazotrophic cyanobacterium, globally distributed in aquatic environments and known for forming toxic blooms, thereby affecting ecosystem services. South American strains are producers of saxitoxins, potent neurotoxins harmful to humans and animals.
Zare M, Barçante B, Pimentel JDSM, Giani A.   +3 more
europepmc   +2 more sources

Revision and expansion of the genus Spirirestis (Tolypothrichaceae, Cyanobacteria). [PDF]

J Phycol
Abstract Recent phylogenetic analyses of members of the Tolypothrichaceae (Nostocales, Cyanobacteria) based on 16S rRNA gene sequence data have demonstrated that the soil‐inhabiting members of the family belong to a clade separate from the aquatic and subaerial members of the family.
Johansen JR, Jusko BM, Pietrasiak N, Alwathnani H, Soliman N, Zhydan A, Peron S, Luknis M, Osorio-Santos K, Řeháková K, Zhang B, Hasenstab-Lehman KE, Hoyer WF, Pal S, Singh P.   +14 more
europepmc   +2 more sources

Aphanizomenon gracile (Nostocales), a cylindrospermopsin-producing cyanobacterium in Polish lakes [PDF]

Environmental Science and Pollution Research, 2013
The cyanobacterial cytotoxin cylindrospermopsin (CYN) has become increasingly common in fresh waters worldwide. It was originally isolated from Cylindrospermopsis raciborskii in Australia; however, in European waters, its occurrence is associated with other cyanobacterial species belonging to the genera Aphanizomenon and Anabaena.
Kokociński, Mikołaj, Mankiewicz-Boczek, Joanna, Jurczak, Tomasz, Spoof, Lisa, Meriluoto, Jussi, Rejmonczyk, Edyta, Hautala, Henna, Vehniäinen, Markus, Pawełczyk, Jakub, Soininen, Janne   +9 more
openaire   +2 more sources

Microbial and bryospheric photosynthesis of boreal peatlands have peatland-type-specific responses to long-term drying. [PDF]

New Phytol
Summary The impacts of drying on bryospheric photosynthesis are poorly understood. Utilising a 20‐yr‐long experiment, we quantified the effects of long‐term water level drawdown (WLD) on links between bryospheric photosynthesis, microbial community composition, decomposition, and environmental variables.
Kuuri-Riutta O, Le Geay M, Jassey VEJ, Barel JM, Laine AM, Ylänne H, Tuittila ES.   +6 more
europepmc   +2 more sources

Molecular characterization of the type species of Kyrtuthrix (Rivulariaceae, Cyanobacteriota) with comparison to Nunduva: Morphologically different but molecularly cryptic genera. [PDF]

J Phycol
Abstract The euendolithic genus Kyrtuthrix was originally described in 1929 by A. Ercegović from the Dalmatian coast. Due to its isopolar filaments, Kyrtuthrix was classified within the cyanobacterial system as part of the family Scytonemataceae, even though trichomes tapering toward their ends represent a feature typical of the family Rivulariaceae ...
Vondrášková A, Hauer T, Mareš J, Berrendero-Gomez E, Zima J, Montoya-Terreros H, Villanueva CD, Johansen JR.   +7 more
europepmc   +2 more sources

Description of two new species of Nostoc (Nostocales, Cyanobacteria) from central Mexico, using morphological, ecological, and molecular attributes

Journal of Phycology, 2023
The present study describes two new Nostoc species, N. montejanii and N. tlalocii, based on a polyphasic approach that combines morphological, ecological, and genetic characteristics.
Javier Carmona Jiménez, Angela Piedad Caro Borrero, I. Becerra-Absalón, Elvira Perona Urizar, Kenia Márquez Santamaría, Pilar Mateo Ortega   +5 more
semanticscholar   +1 more source

Hindcasting cyanobacterial communities in Lake Okaro with germination experiments and genetic analyses [PDF]

, 2009
Cyanobacterial blooms are becoming increasingly prevalent worldwide. Sparse historic phytoplankton records often result in uncertainty as to whether bloom-forming species have always been present and are proliferating in response to eutrophication or ...
Cary, S. Craig, Hamilton, David P., Jentzsch, Katrin, Rueckert, Andreas, Wood, Susanna A.   +4 more
core   +2 more sources

Phylogenetic insights into the genus Scytonema Bornet et Flahault (Cyanobacteria): A 16S rRNA gene review with the taxonomic assessment of S. schmidtii Gomont [PDF]

Acta Botânica Brasílica
This study aims to reevaluate the diversity of 16S rRNA gene sequences associated with Scytonema (Nostocales, Cyanobacteria). For that, we first conducted a search for ‘Scytonema’ sequences available in GenBank (NCBI) and aligned the results with ...
Guilherme Scotta Hentschke, Célia Leite Sant’Anna, Vitor Vasconcelos   +2 more
doaj   +1 more source

Baltic Sea diazotrophic cyanobacterium is negatively affected by acidification and warming [PDF]

, 2018
Nitrogen fixation is a key source of nitrogen in the Baltic Sea which counteracts nitrogen loss processes in the deep anoxic basins. Laboratory and field studies have indicated that single-strain nitrogen-fixing (diazotrophic) cyanobacteria from the ...
Paul, Allanah J., Paul, Carolin, Riebesell, Ulf, Sommer, Ulrich   +3 more
core   +1 more source

Insights on the biomineralisation processes and related diversity of cyanobacterial microflora in thermogenic travertine deposits in Greek hot springs (North‐West Euboea Island)

The Depositional Record, 2022
The aim of this study is to identify the biomineralisation processes in hot springs of North‐West Euboea Island by assessing the physico‐chemical parameters of the hot water, the travertine mineralogical composition and facies, and the cyanobacterial ...
Christos Kanellopoulos, Vasiliki Lamprinou, Artemis Politi, Panagiotis Voudouris, Athena Economou‐Amilli   +4 more
doaj   +1 more source