Heterocysts or heterocytes are specialized nitrogen-fixing cells formed during nitrogen starvation by some filamentous cyanobacteria, such as Nostoc,...
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cyanobacteria, this enzyme system is housed in a specialized cell called the heterocyst. The production of the nitrogenase complex is genetically regulated, and...
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conditions, vegetative cells differentiate into heterocysts at semiregular intervals along the filaments. Heterocyst cells are terminally specialized for nitrogen...
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host through the action of terminally differentiated cells known as heterocysts. Nostoc is a genus that includes many species that are diverse in morphology...
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partially surrounded by a gelatinous sheet. The trichomes have a basal heterocyst. Each trichome has a narrow aptic portion which is whip- or tail-like...
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enveloped, thick-walled, non-motile, dormant cell formed by filamentous, heterocyst-forming cyanobacteria under the order Nostocales and Stigonematales. Akinetes...
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Within these fascicles, heterocysts often appear at various intervals on the trichomes. When attached to a trichome, heterocysts import carbohydrates which...
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called heterocysts. Heterocysts may also form under the appropriate environmental conditions (anoxic) when fixed nitrogen is scarce. Heterocyst-forming...
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Cyanobacterial morphology (section Heterocysts)
that form specialized cell types in the absence of combined nitrogen (heterocysts), during unfavorable conditions (akinetes) or to spread and initiate...
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that the heterocysts are often produced in a repeating pattern within a filament composed of several vegetative cells, and once formed, heterocysts cannot...
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punctatus requires genes involved in nitrogen control and initiation of heterocyst differentiation". Microbiology. 148 (Pt 1): 315–323. doi:10.1099/00221287-148-1-315...
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fix nitrogen in daylight under aerobic conditions without the use of heterocysts. Trichodesmium can live as individual filaments, with tens to hundreds...
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Illustration of "Cylindrospermum stagnale". h, heterocyst; sp, resting spore...
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Along the trichomes, larger specialist nitrogen-fixing cells called heterocysts occur between the ordinary cells. When wet, Nostoc commune is bluish-green...
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"Genes of Cyanobacterial Origin in Plant Nuclear Genomes Point to a Heterocyst-Forming Plastid Ancestor". Molecular Biology and Evolution. 25 (4): 748–761...
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nitrogen as well. These are colonial bacteria that have specialized cells (heterocysts) that lack the oxygen generating steps of photosynthesis. Examples are...
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Kumar K, Mella-Herrera RA, Golden JW (April 2010). "Cyanobacterial heterocysts". Cold Spring Harbor Perspectives in Biology. 2 (4): a000315. doi:10...
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Trichormus azollae, syn. Anabaena azollae with heterocyst of Azolla sp....
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By 408 million years ago, nitrogen fixating cyanobacteria had evolved heterocysts to protect their nitrogenase from oxygen. Eukaryotes may have arisen...
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circinalis form heterocysts, larger, round, nitrogen-fixing cells found every ten to twenty cells or so on the filament. Heterocysts function to convert...
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reproduction in unicellular, filamentous cyanobacteria, and some may contain heterocysts and akinetes. Cyanobacteria differentiate into hormogonia when exposed...
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Richelia’s trichomes are made up of two cell types: Heterocyst and Vegetative. The heterocyst is a terminal single cell within which nitrogen fixation...
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mechanism to keep the concentration of oxygen low. Examples include: heterocyst formation (cyanobacteria e.g. Anabaena) where one cell does not photosynthesize...
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is the main respiratory and photosynthetic soluble electron donor in heterocysts of the cyanobacterium Anabaena sp. PCC 7120". Biochimica et Biophysica...
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in which Nostoc provides nitrogen to its host through cells known as heterocysts, and which are able to carry out photosynthesis. The Nostoc colonies...
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upper 2/3 of the "bladder" contains the Nostoc filaments and Nostoc heterocysts, the lower 1/3 is filled with lipid droplets. The fungal spores are 250 micrometres...
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nutrient limitation, some of these cells undergo differentiation into heterocysts, akinetes or hormogonia. N. punctiforme is one of the Nostoc strains...
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Some members show a decrease in width from the base, and some have heterocysts. Komárek J, Kaštovský J, Mareš J, Johansen JR (2014). "Taxonomic classification...
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nitrogen-fixing heterocysts. Since hormogonia are important for establishing symbiotic partnerships between cyanobacteria and plants, and heterocysts are essential...
57 KB (6,306 words) - 14:01, 26 June 2024