In a species of Oscillatoria exhibiting movement of type suitable for exact measurement the velocity of linear translatory motion is found to be controlled by the temperature (6 - 36 degrees C.) in accordance with Arrhenius' equation for irreversible reactions. The value of the critical increment (micro) is 9,240. The extreme variates in series of measurements at different temperatures yield th...

The potential utilization of cyanobacteria for the biological production of alkanes represents an exceptional system for the next generation of biofuels. Here, we analyzed a diverse group of freshwater and marine cyanobacterial isolates from Indian culture collections for their ability to produce both alkanes and alkenes. Among the 50 cyanobacterial isolates screened, 32 isolates; 14 freshwater...

Refat Abdel-Basset and Klaus P. Bader Lehrstuhl für Zellphysiologie, Fakultät für Biologie, Universität Bielefeld, Postfach 10 01 31, D-33501 Bielefeld, Germany Z. Naturforsch. 52c, 775-781 (1997); received September 8/October 17, 1997 Photosynthesis, Mass Spectrometry, Hydrogen Photoevolution, Cyanobacterium The filamentous non-heterocystous cyanobacterium Oscillatoria chalybea is capable to p...

Cyanobacterial mats were characterized from pools of 45-60 degrees C in near-neutral pH, low-sulphide geothermal springs in the Philippines. Mat structure did not vary with temperature. All mats possessed highly ordered layers of airspaces at both the macroscopic and microscopic level, and these appear to be an adaptation to a free-floating growth habit. Upper mat layers supported biomass with ...

Periodical changes in physico-chemical properties and cyanophycean bloom in a pond ofAgra city during the year 2005 and 2006 were studied. It was recorded that the pond water was polluted throughout the study period and this was closely associated with Cyanobacterial bloom. During summer (March to June), the pond water was highly polluted, as it was rich in various nutrients and phosphates in p...

The aim of the present study is to evaluate the biological control aptitude of the cyanobacteria, Anabaena subcylindrica, Nostoc muscorum and Oscillatoria angusta filtrates on the growth of the isolated pathogenic fungi from the different organs of Faba bean. Three caynobacterial (Anabaena subcylindrica, Nostoc muscorum and Oscillatoria angusta) filtrates were prepared in different concentratio...

Four species of cyanobacteria isolated from estuarine habitats were studied in relation to salinity and pH on their growth rate and biomass production. The biochemicals like protein, carbohydrate and lipids were analyzed. The study has shown that although they could survive and grow at varying salinity, the range between 15 and 25 ppt was optimum for growth and biomass production in all the spe...

The article presents the results of a study on adaptation Oscillatoria agardhii to water lakes various mineralization. It has been established that cyanobacteria develops in range mineralization from 2 50 g/l. optimum was 2-21 pH waters which development observed varied 6.5 9.2. temperature growth 25-40 °C. Principal component analysis revealed trend increasing cell density, coinciding with gre...

Glycolic acid oxidase activity was detected in cell-free preparations of Anabaena flos-aquae and Oscillatoria sp. by the reduction of 2,6-dichlorophenolindophenol and by the formation of glyoxylate. Enzyme activity was localized in the 20,000 times gravity supernatant fraction, and optimal activity was obtained at pH 8.0. Activity was lost on storing the preparation at 4 C and could not be rest...

The gliding movements of certain Cyanophyceae, Thiobacteriales, and gregarines provide relatively uncomplicated types of comparable activities suitable for quantitative observation. In spite of much discussion, little is known as to the mechanism of this sort of progression. Interpretations have been advanced by a number of writers, t but data required for formulation of a theory of this sort o...