Cyanobacteria

describe  here  the  additional  pathways synchronized by the clock and discussed the influence of the circadian clock‐controlled feeding rhythm on them.    Circadian clocks are operative in virtually all lightsensitive organisms, including cyanobacteria, fungi, plants, protozoans and metazoans. These timing devices allow their possessors to adapt their physiological needs to the time of day in an anticipatory way. In mammals, circadian pacemakers regulate many systemic processes, such as sleep-wake

BII. Thermotogae VP Phylum BIII. Thermodesulfobacteria VP Phylum BIV. Deinococcus-ThermusVP Phylum BV. Chrysiogenetes VP Phylum BVI. “Chloroflexi”Phylum BVII. Thermomicrobia VP Phylum BVIII. “Nitrospira” Phylum BIX. Deferribacteres VP Phylum BX. Cyanobacteria Phylum BXI. Chlorobi VP Phylum BXII. Proteobacteria NP Class I. “Alphaproteobacteria” NP Class II. “Betaproteobacteria” NP Class III. “Gammaproteobacteria” NP Order I. “Chromatiales” NP (T) Family I. Chromatiaceae AL Genus I. ChromatiumAL (T) Genus

chlorophyll a ), provided phytoplankton be not too abundant. Among fertilizers tested in research station, urea gave good fish yields (3-4 t.ha-1.an-1 ). However, its use promote high ammonium nitrogen level (6 mg.l-1 ) and seems to stimulate cyanobacteria. Cichlids feeding relies mostly on benthic and periphytic food, as it appears through stomach content observations. Considering knowledge acquired in this field, a new approach, based on fish feeding behaviour is proposed for studying ponds and

constituent of oil and gas. Blue-green algae or cyanobacteria (from Greekkyanos —“dark green-blue”) is earth’s earliest known life form, with fossils that date back 3.6 billion years. While some algae are included with the plants in the Eukaryote domain (eu,“true,” andkaryon, “nut,” referring to their cell’s having true nuclei, which bacteria don’t), the cyanobacteria are now firmly in the Bacteria kingdom with their own phylum. One form of cyanobacteria, spirulina, yields twenty times more protein

Desplats C, Dez C, Tetart F, Eleaume H, Krisch HM. Snapshot of the genome of the pseudo-T-even bacteriophage RB49. J Bacteriol 2002;184:2789-804. 23. Devic E, Li D, Dauta A, et al. Detection of anatoxin-a(s) in environmental samples of cyanobacteria by using a biosensor with engineered acetylcholinesterases. Appl Environ Microbiol 2002; 68:4102-6. 24. Echenique JR, Trombe MC. Competence repression under oxygen limitation through the twocomponent MicAB signal-transducing system in Streptococcus