Cyanobacteria (Blue-Green Algae): Their Evolution and Relation to Other Photosynthetic Organisms

BioScience ◽  
1981 ◽  
Vol 31 (2) ◽  
pp. 121-124 ◽  
Author(s):  
David W. Krogmann
Keyword(s):  
Green Algae ◽  
Blue Green Algae ◽  
Photosynthetic Organisms

Some Aspects of the Ecology of Lake Macquarie, N.S.W., with Regard to an Alleged Depletion of Fish. VI. Plant Communities and their Significance

1959 ◽  
Vol 10 (3) ◽  
pp. 322 ◽  
Author(s):  
EJF Wood
Keyword(s):  
Green Algae ◽  
Plant Communities ◽  
Brown Algae ◽  
Phytoplankton Community ◽  
Bottom Community ◽  
Blue Green Algae ◽  
Reef Community ◽  
Photosynthetic Organisms ◽  
Sea Grass

There are four plant communities in Lake Macquarie: the see-grass community, the reef community, the mud bottom community, and the phytoplankton community. Biologically, the sea-grass community is regarded as being the most important. The epiphytes on the sea-grasses are largely used as food by phytophagous fish and other animals. The reef community consists of larger brown algae which are not of themselves of great importance, and of felts of blue-green algae such as Ectocarpus, and other filamentous forms which are important. Photosynthetic organisms are sparse in the mud bottoms, except for the tapetic organisms in the sea. Phytoplankton is relatively abundant.

scholarly journals The synthesis of acetylcholine by plants

1981 ◽  
Vol 194 (1) ◽  
pp. 361-364 ◽  
Author(s):  
B N Smallman ◽  
A Maneckjee
Keyword(s):  
Pisum Sativum ◽  
Green Algae ◽  
Choline Acetyltransferase ◽  
Spinacia Oleracea ◽  
Higher Plants ◽  
Urtica Dioica ◽  
The Other ◽  
Affinity Column ◽  
Blue Green Algae ◽  
Photosynthetic Organisms

Choline acetyltransferase was demonstrated in nettles (Urtica dioica), peas (Pisum sativum), spinach (Spinacia oleracea), sunflower (Helianthus annuus) and blue–green algae by using a Sepharose–CoASH affinity column. The column effected a 1500-fold purification of the enzyme from nettle homogenates and was required for demonstrating activity in the other higher plants. Demonstration of the enzyme in blue-green algae suggests that acetylcholine was a biochemical necessity in the earliest photosynthetic organisms.

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
Sign in / Sign up

Export Citation Format

Share Document