Growth requirements of blue-green algae under blue light conditions

1974 ◽  
Vol 97 (1) ◽  
pp. 303-312 ◽  
Author(s):  
Warren M. Pulich ◽  
Chase Van Baalen
Keyword(s):  
Blue Light ◽  
Green Algae ◽  
Light Conditions ◽  
Blue Green Algae ◽  
Growth Requirements

THE EFFECT OF LIGHT QUALITY ON THE PRODUCTS OF PHOTOSYNTHESIS IN GREEN AND BLUE-GREEN ALGAE, AND IN PHOTOSYNTHETIC BACTERIA

1962 ◽  
Vol 40 (12) ◽  
pp. 1619-1630 ◽  
Author(s):  
A. H. W. Hauschild ◽  
C. D. Nelson ◽  
G. Krotkov
Keyword(s):  
Blue Light ◽  
Green Algae ◽  
Light Quality ◽  
Test Organism ◽  
Photosynthetic Bacterium ◽  
Chlorella Pyrenoidosa ◽  
High Concentration ◽  
Blue Green Algae ◽  
Rate Of Photosynthesis ◽  
Effect Of Light

The effect of light quality on the products of photosynthesis has been studied in two species of green algae, Chlorella pyrenoidosa and Scenedesmus acuminatus, the blue-green alga Microcystis aeruginosa, and the photosynthetic bacterium Chromatium sp.The test organism was placed in C14-bicarbonate and illuminated at saturation intensities of red, red plus supplementary blue, blue alone, or white light. After 30 minutes, the distribution of C14 among the products of photosynthesis was determined using the techniques of paper chromatography and autoradiography.At a high concentration of cells of Chlorella pyrenoidosa, blue light caused an increase in C14 in aspartic, glutamic, fumaric, and malic acids and a decrease in sucrose and phosphate esters, although the rate of photosynthesis remained the same. At a low concentration of cells, similar changes were found, and these were accompanied by an increase in the rate of photosynthesis.Similar changes in the distribution of C14 due to blue light were found also in Scenedesmus. In Microcystis, a substantial increase in C14 due to blue light was found only in glutamic acid. The rate of photosynthesis remained the same in both organisms.The results indicate that the nature of the effect of blue light is the same in all of these organisms and in Chlorella vulgaris which was studied previously.Pretreatment in darkness is a prerequisite for a pronounced effect of blue light on the products as well as the rate of photosynthesis.No effect of light quality was found in Chromatium.

Freeze-Fracture Replication in the Ultrastructure of Blue-Green Algae

1967 ◽  
Vol 25 ◽  
pp. 74-75
Author(s):  
L. V. Leak
Keyword(s):  
Cell Wall ◽  
Electron Microscope ◽  
Green Algae ◽  
Three Dimensional ◽  
Freeze Fracture ◽  
Electron Microscopic ◽  
Photosynthetic Membranes ◽  
Blue Green Algae ◽  
Cell Biol ◽  
Cellular Components

Electron microscopic observations of freeze-fracture replicas of Anabaena cells obtained by the procedures described by Bullivant and Ames (J. Cell Biol., 1966) indicate that the frozen cells are fractured in many different planes. This fracturing or cleaving along various planes allows one to gain a three dimensional relation of the cellular components as a result of such a manipulation. When replicas that are obtained by the freeze-fracture method are observed in the electron microscope, cross fractures of the cell wall and membranes that comprise the photosynthetic lamellae are apparent as demonstrated in Figures 1 & 2.A large portion of the Anabaena cell is composed of undulating layers of cytoplasm that are bounded by unit membranes that comprise the photosynthetic membranes. The adjoining layers of cytoplasm are closely apposed to each other to form the photosynthetic lamellae. Occassionally the adjacent layers of cytoplasm are separated by an interspace that may vary in widths of up to several 100 mu to form intralamellar vesicles.

New constituents from Oryza sativa L. straw and their algicidal activities against blue-green algae

2017 ◽  
Vol 40 (1) ◽  
pp. 47-62 ◽  
Author(s):  
I. M. Chung ◽  
S. H. Kim ◽  
Y.T. Oh ◽  
M. Ali ◽  
A. Ahmad
Keyword(s):  
Oryza Sativa ◽  
Green Algae ◽  
Oryza Sativa L ◽  
Blue Green Algae

ISOLATION, IDENTIFICATION AND CHARACTERIZATION OF A STRAIN OF BLUE-GREEN ALGAE-LYSING BACTERIUM FROM LAKE DIANCHI

2009 ◽  
Vol 33 (5) ◽  
pp. 860-865
Author(s):  
Lan-Lan LU ◽  
Gen-Bao LI ◽  
Yin-Wu SHEN ◽  
Ming-Ming HU ◽  
Yong-Ding LIU
Keyword(s):  
Green Algae ◽  
Lake Dianchi ◽  
Blue Green Algae ◽  
Identification And Characterization

The relationship between musty-odor-causing organisms and water quality in Lake Biwa

1995 ◽  
Vol 31 (11) ◽  
pp. 153-158 ◽  
Author(s):  
M. Kajino ◽  
K. Sakamoto
Keyword(s):  
Water Quality ◽  
Data Analysis ◽  
Green Algae ◽  
Analytical Methods ◽  
Lake Biwa ◽  
Blue Green Algae ◽  
Odor Compounds ◽  
Musty Odor ◽  
The Relationship

Musty odor has occurred annually in Lake Biwa since 1969. Osaka municipal waterworks, which is located downstream of Lake Biwa, has made many efforts to treat musty-odor compounds produced in Lake Biwa from spring through autumn. With the development of analytical methods for the determination of musty-odor compounds, we have been able to confirm that planktonic blue-green algae are the major causes of the musty-odor occurrences. The relationship between the growth of blue-green algae and the water quality was not so apparent. However, through our data analysis focusing on the relationship between musty-odor occurrences due to Phormidium tenue or Oscillatoria tenuis and some nutrients in Lake Biwa, we found that the concentration of nitrate in water may be an important parameter for the estimation of growth of the algae and the musty-odor behavior.

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