Results 71 to 80 of about 2,720 (207)

The small Ca2+-binding protein CSE links Ca2+ signalling with nitrogen metabolism and filament integrity in Anabaena sp. PCC 7120

open access: yesBMC Microbiology, 2020
Background Filamentous cyanobacteria represent model organisms for investigating multicellularity. For many species, nitrogen-fixing heterocysts are formed from photosynthetic vegetative cells under nitrogen limitation.
Julia Walter   +3 more
doaj   +1 more source

Identification of Conserved and Potentially Regulatory Small RNAs in Heterocystous Cyanobacteria

open access: yesFrontiers in Microbiology, 2016
Small RNAs (sRNAs) are a growing class of non-protein-coding transcripts that participate in the regulation of virtually every aspect of bacterial physiology.
Manuel eBrenes-Álvarez   +3 more
doaj   +1 more source

Cyanobacterial Heterocysts

open access: yes, 2011
Cyanobacteria are phototrophic bacteria carrying out oxygen-producing photosynthesis. Indeed, cyanobacteria were the inventors of oxygenic photosynthesis carried out by eukaryotic algae and plants. Besides showing the capability of building their cellular carbon from carbon dioxide, available in the atmosphere, several strains of cyanobacteria have ...
Maldener, Iris, Muro-Pastor, Alicia M.
openaire   +1 more source

Developmental Biology in Cyanobacteria

open access: yesLife, 2019
Filamentous, heterocyst-forming cyanobacteria are phototrophic multicellular organisms in which N2-fixing heterocysts and CO2-fixing vegetative cells exchange regulators and nutrients [...]
Antonia Herrero, Enrique Flores
doaj   +1 more source

Characterization of the hupSL promoter activity in Nostoc punctiforme ATCC 29133

open access: yesBMC Microbiology, 2009
Background In cyanobacteria three enzymes are directly involved in the hydrogen metabolism; a nitrogenase that produces molecular hydrogen, H2, as a by-product of nitrogen fixation, an uptake hydrogenase that recaptures H2 and oxidize it, and a ...
Lindberg Pia   +4 more
doaj   +1 more source

N2 Fixation by non-heterocystous cyanobacteria

open access: yesFEMS Microbiology Reviews, 1997
Many, though not all, non-heterocystous cyanobacteria can fix N-2. However, very few strains can fix N-2 aerobically. Nevertheless, these organisms may make a substantial contribution to the global nitrogen cycle. In this general review, N-2 fixation by laboratory cultures and natural populations of non-heterocystous cyanobacteria is considered.
Bergman, B.   +3 more
openaire   +2 more sources

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