........................................................................................................................................................ ii Acknowledgements ...................................................................................................................................... iii List of Figures ........................................................................

The phycobiliproteins of the blue-green algae Synechococcus sp. and Aphanocapsu sp. were characterized with respect to homogeneity, isoelectric point, and subunit composition. Each of the biliproteins consisted of two different noncovalently associated subunits, with molecular weights of about 20,000 and 16,000 for phycocyanin, 17,500 and 15,500 for allophycocyanin, and 22,000 and 20,000 for ph...

Unpredictable poisonings of livestock and wildlife by waterblooms or scums of freshwater cyanophytes (cyanobacteria) occur when toxic strains of the common spe.cies dominate composition sufficiently to provide above-threshold levels of phycótoxins by susceptible animals. Known phycotoxins from freshwater cyanophytes are alkaloids, polypeptides or pteridines. New toxins produced by new strains h...

1. In Chroococcus a quantum of light absorbed by phycocyanin has 90 per cent the chance of doing photosynthesis that a quantum absorbed by chlorophyll has. 2. By a process analogous to internal conversion in radioactivity (but with the linear dimensions and the wave length 10(4) times larger) there will be transferred from phycocyanin to chlorophyll See PDF for Equation (a number of the order o...

The removal of Methylene Blue dye from aqueous solution using a biowaste, dried Blue Green Algae was investigated in terms of variation of initial concentration of the dye solution, adsorbent dosage and pH. The optimum pH for the removal of dye by adsorption was found to be pH 7. The data obtained in this study fitted with Langmuir and Freundlich adsorption isotherms. The experimental data conf...

Blue green algae also called cyanobacteria are considered to be the photosynthetic prokaryotes. Their similarities with both higher plants and simple bacteria have made them ideal model systems for intensive research in varied spheres of biology. Their role in nitrogen fixation is well known but their role as prebiotics to support the growth of probiotic bacteria is an upcoming field of study. ...

Thermotropic properties of blue-green algae grown at high, room, and low temperatures in H(2)O and D(2)O media were studied by highly sensitive differential scanning microcalorimetry. The thermograms of these organisms contain an endothermal peak in the temperature range of 50 to 70 C with an endothermal heat ranging from 0.14 to 1.91 joules per gram organism. The temperature at which the endot...

A water-soluble transformation product of 2,4-D. Arch. Biochem. Biophys. 35: 171-175. 1952. 4. JAWORSKI, E. G. and BUTTS, J. S. Studies in plant metabolism. II. The metabolism of C'4 labeled 2,4-dichlorophenoxyacetic acid in bean plants. Arch. Biochem. Biophys. 38: 207-218. 1952. 5. MITCHELL, J. W. and BROW-N, J. W. Movement of 2,4-dichlorophenoxyacetic acid stimulus and its relation to the tra...

of the relatively small number of substrates that can feed into the oxidative pentose phosphate cycle, is the most probable explanation for the widespread occurrence of obligate photoautotrophy among cyanobacteria. However, certain cyanobacteria that are facultative photoheterotrophs, able to grow'in the light in the presence of 3-(3,4dichloropheny1)-1 ,I-dimethylurea at the expense of glucose,...