Nostoc


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Related to Nostoc: cyanobacteria, spirulina

Nostoc

 

a genus of blue-green algae of the class Hor-mogonaceae. There are approximately 50 species, living in almost all climatic zones, in fresh waters and on damp cliffs and soil. Colonies of the algae are gelatinous and spherical, with a diameter of up to 10 cm. They resemble tapes or filaments and are free-living or sedentary. The colonies consist of single rows of filaments buried in the slime. Each filament is composed of thick-walled cells called heterocysts. The algae reproduce by spores or vegetatively, with bits of the filaments breaking off. There are some nitrogen-fixing species. Some species of Nostoc are used as food in Asian countries.

References in periodicals archive ?
However, a polysaccharide from a closely related species Nostoc flagilliforme possesses anti-viral effects (Kanekiyo et al.
For example, Nostoc photobiont in homoiomerous gels such as Collema seem to mimic gel-like free-living Nostoc colonies.
Nostoc genties mels-vabakteres isskiria citotoksina--cianobakterina, kuris pasizymi algicidiniu, herbicidiniu, priesgrybiniu ir antibakteriniu poveikiu (Verpritskii et al.
Isolation, primary sequence determination, and disulfide bond structure of cyanovirin-N, an anti-HIV (human immunodeficiency virus) protein from the cyanobacterium Nostoc ellipsosporum.
The blue green algal members such as Nostoc and Oscillatoria species were selected for phycoremediation of municipal wastewater.
Metabolites produced by nitrogen-fixing Nostoc species.
CT Lyngbya ceylanica Wille CM Lyngbya lagerheimii (Gomont) Anagnostidis CT Lyngbya limnetica Lemmermann CT Lyngbya perelegans Lemmermann CT CT Microcystis aeruginosa Kützing CM Nostoc sp.
Geosiphon pyriforme, a fungus forming endocytobiosis with Nostoc (cyanobacteria), is an ancestral member of the Glomales: evidence by SSU rRNA analysis.
According to this theory, the toxin becomes more concentrated as it moves up the food chain from the microbes, Nostoc cyanobacteria, to tropical plants called cycads to bats to the Chamorro people (SN: 8/14/04, p.
CV-N is a novel protein isolated from the cyanobacterium, Nostoc ellipsosporum (blue-green algae).
We found that the different strains have a high sequence similarity in the 23S rRNA gene region, and that Anabaena and Nostoc are the two most closely related genera.