Photosynthetic and biochemical responses of the freshwater green algae Closterium ehrenbergii Meneghini (Conjugatophyceae) exposed to the metal coppers and its implication for toxicity testing

2018 ◽  
Vol 56 (6) ◽  
pp. 426-434 ◽  
Author(s):  
Hui Wang ◽  
Vinitha Ebenezer ◽  
Jang-Seu Ki
Keyword(s):  
Green Algae ◽  
Toxicity Testing ◽  
Biochemical Responses ◽  
Closterium Ehrenbergii

Toxicity testing of highly volatile chemicals with green algae

1994 ◽  
Vol 1 (4) ◽  
pp. 223-228 ◽  
Author(s):  
Werner Brack ◽  
Horst Rottler
Keyword(s):  
Green Algae ◽  
Toxicity Testing ◽  
Volatile Chemicals

Time Course Biochemical Responses of Green Algae Scenedesmus obliquus to Aluminum and Low pH

2004 ◽  
Vol 73 (6) ◽  
pp. 1001-1008 ◽  
Author(s):  
S. A. Jusu ◽  
F. X. Kong ◽  
B. Q. Qing ◽  
J. K. Tan ◽  
X. B. Han
Keyword(s):  
Green Algae ◽  
Time Course ◽  
Scenedesmus Obliquus ◽  
Low Ph ◽  
Biochemical Responses

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.

A Scanning Electron Microscopic Study of Pro-Vascular Cellular Morphology in Chaetophora Incressata

1985 ◽  
Vol 43 ◽  
pp. 638-639
Author(s):  
A. E. Hotchkiss ◽  
A. T. Hotchkiss ◽  
R. P. Apkarian
Keyword(s):  
Green Algae ◽  
Vascular Plants ◽  
Vascular System ◽  
Higher Plants ◽  
Wall Structure ◽  
Electron Microscopic ◽  
Physiological Processes ◽  
Scanning Electron Microscopic Study ◽  
Scanning Electron Microscopic ◽  
Scanning Electron

Multicellular green algae may be an ancestral form of the vascular plants. These algae exhibit cell wall structure, chlorophyll pigmentation, and physiological processes similar to those of higher plants. The presence of a vascular system which provides water, minerals, and nutrients to remote tissues in higher plants was believed unnecessary for the algae. Among the green algae, the Chaetophorales are complex highly branched forms that might require some means of nutrient transport. The Chaetophorales do possess apical meristematic groups of cells that have growth orientations suggestive of stem and root positions. Branches of Chaetophora incressata were examined by the scanning electron microscope (SEM) for ultrastructural evidence of pro-vascular transport.

Toxicity testing in the development of anticancer drugs

2002 ◽  
Vol 3 (7) ◽  
pp. 440-441
Author(s):  
N Barnard
Keyword(s):  
Anticancer Drugs ◽  
Toxicity Testing
Sign in / Sign up

Export Citation Format

Share Document