Results 211 to 220 of about 5,317 (237)

Molecular characterization uncovering a novel genus of tapering-filamentous cyanobacteria from Thailand: Phayaothrix lacustris gen. & sp. nov. (Nostocales, Cyanophyta)

Phytotaxa
In this study, novel Calothrix-like strains NUACC09 and NUACC10 were isolated from the surfaces of rocks in Phayao Lake, Thailand. Morphological, molecular and ecological comparisons were investigated to characterize the taxonomic status of these novel ...
W. Tawong, Tomohiro Nishimura, Pongsanat Pongcharoen, W. Saijuntha, Siriwat Kucharoenphaibul, Pathipat Sunpapao, P. Pongpadung, S. Ponza   +7 more
semanticscholar   +1 more source

Okeanomitos corallinicola gen. and sp. nov. (Nostocales, Cyanobacteria), a new toxic marine heterocyte‐forming Cyanobacterium from a coral reef

Journal of Phycology
Cyanobacterial mats supplanting coral and spreading coral diseases in tropical reefs, intensified by environmental shifts caused by human‐induced pressures, nutrient enrichment, and global climate change, pose grave risks to the survival of coral ...
Haiyan Li, Renhui Li, Jianhua Kang, K. Hii, Hala F. Mohamed, Xinya Xu, Zhaohe Luo   +6 more
semanticscholar   +1 more source

Factors affecting akinete differentiation in Cylindrospermopsis raciborskii (Nostocales, Cyanobacteria)

Freshwater Biology, 2005
Summary1. Cylindrospermopsis raciborskii is a potentially toxic freshwater cyanobacterium which can produce akinetes (reproductive spores) that on germinating can contribute to future populations. To further understand factors controlling the formation of these specialised cells, the effects of diurnal temperature fluctuations (magnitude and frequency),
Moore, D., O'Donohue, M., Garnett, C. M., Shaw, G. R., Critchley, C.   +4 more
openaire   +2 more sources

A closely-related clade of globally distributed bloom-forming cyanobacteria within the Nostocales

Harmful Algae, 2018
In order to better understand the relationships among current Nostocales cyanobacterial blooms, eight genomes were sequenced from cultured isolates or from environmental metagenomes of recent planktonic Nostocales blooms. Phylogenomic analysis of publicly available sequences placed the new genomes among a group of 15 genomes from four continents in a ...
Connor B. Driscoll, Kevin A. Meyer, Sigitas Šulčius, Nathan M. Brown, Gregory J. Dick, Huansheng Cao, Giedrius Gasiūnas, Albertas Timinskas, Yanbin Yin, Zachary C. Landry, Timothy G. Otten, Timothy W. Davis, Susan B. Watson, Theo W. Dreher   +13 more
openaire   +2 more sources

Annotated list of Cyanoprokaryota from Murmansk Region. III. Nostocales, Stigonematales

Novosti sistematiki nizshikh rastenii, 2010
The results of studies of Cyanoprokariota (Cyanophyta, Cyanobacteria) of the Murmansk Region are presented. The list of Nostocales contains 73 species and that of Stigonematales — 8 species. 8 species are reported as new records for Murmansk Region.
openaire   +1 more source

True branching and phenotypic plasticity in the planktonic cyanobacterium Dolichospermum brachiatum sp. nov. (Nostocales, Aphanizomenonaceae), from south-eastern Australia

, 2021
Phenotypic plasticity in the cyanobacteria provides adaptive strategies to cope with changes in prevailing environmental conditions. Plasticity may manifest in morphological, physiological, or behavioural responses. Determining if variable phenotypes are
G. Mcgregor, B. Sendall
semanticscholar   +1 more source

Genetic characterisation of Cylindrospermopsis raciborskii (Nostocales, Cyanobacteria) isolates from Africa and Europe

Harmful Algae, 2008
Abstract The invasive cyanobacterium Cylindrospermopsis raciborskii is increasingly spreading in temperate freshwater habitats worldwide and is of major concern due to its ability to produce potent toxins. It is, therefore, important to understand the mechanisms behind the dispersal of this species.
Sigrid Haande, Thomas Rohrlack, Andreas Ballot, Kjetil Røberg, Randi Skulberg, Martin Beck, Claudia Wiedner   +6 more
openaire   +1 more source

Ultrastructure d'une cyanophycée aérienne calcifiée cavernicole:Scytonema julianum (Frank) Richter (Hormogonophycideae, Nostocales, Scytonemataceae)

Hydrobiologia, 1988
The ultrastructure of the atmophytic lime-encrusted filamentous blue-green algaScytonema julianum (Frank) Richter which grows in caves, is studied here for the first time. The cytology of this organism is compared with that of another filamentous and lime-encrusted cyanophycea,Geitleria calcarea Friedmann, which grows in the same biotope.
Alain Couté, Edith Bury
openaire   +1 more source

New insights into the distribution of alien cyanobacterium Chrysosporum bergii (Nostocales, Cyanobacteria)

Phycological Research, 2019
SUMMARYInvasive and alien cyanobacteria are considered as a serious threat to aquatic ecosystems due to their ability to produce cyanotoxins and outcompeting native species. Among cyanobacteria, Nostocales is a group with strong competitive advantages including the production of resting cells, ability to fix nitrogen or high affinity to phosphorus.
Mikołaj Kokociński, Janne Soininen
openaire   +1 more source

Effects of Daphnia exudates and sodium octyl sulphates on filament morphology and cell wall thickness of Aphanizomenon gracile (Nostocales), Cylindrospermopsis raciborskii (Nostocales) and Planktothrix agardhii (Oscillatoriales)

European Journal of Phycology, 2018
Grazing is recognized as one of the selective factors shaping the morphology and physiology of cyanobacteria.
Lukasz Wejnerowski, Slawek Cerbin, Maria Wojciechowicz, Tomasz Jurczak, Małgorzata Glama, Jussi Meriluoto, Marcin Dziuba   +6 more
openaire   +1 more source