Infra red spectral analysis of antibacterial substance isolated from Trichodesmium erythraeum (Marine blue green alga)

Hydrobiologia ◽  
1973 ◽  
Vol 41 (2) ◽  
pp. 247-250 ◽  
Author(s):  
V. D. Ramamurthy
Keyword(s):  
Spectral Analysis ◽  
Green Alga ◽  
Blue Green Alga ◽  
Antibacterial Substance ◽  
Trichodesmium Erythraeum ◽  
Infra Red

Nostodione A, a Novel Mitotic Spindle Poison from a Blue-Green Alga Nostoc commune

1994 ◽  
Vol 49 (7-8) ◽  
pp. 464-470 ◽  
Author(s):  
Akio Kobayashi ◽  
Shin-ichiro Kajiyama ◽  
Kunifumi Inawaka ◽  
Hiroshi Kanzaki ◽  
Kazuyoshi Kawazu
Keyword(s):  
Spectral Analysis ◽  
Medicago Sativa ◽  
Green Alga ◽  
Sea Urchin ◽  
Mitotic Spindle ◽  
Chemical Degradation ◽  
Blue Green Alga ◽  
Nostoc Commune ◽  
Spindle Formation ◽  
Dicotyledonous Plant

A novel antimitotic compound named Nostodione A (Nd A) was isolated from a terrestrial blue-green alga Nostoc commune. Nostodione A disturbed the mitotic spindle formation of sea-urchin eggs and gave small spindles with low birefringence density. Nostodione A. how­ever, had no phytotoxicity on the germination of a dicotyledonous plant Medicago sativa. Based on the spectral analysis and chemical degradation, the structure of Nostodione A was elucidated

Effect of Iron Limitation on the Ultrastructure of Agmenellum Quadruplicatum

1981 ◽  
Vol 39 ◽  
pp. 410-411
Author(s):  
L. P. Hardie ◽  
D. L. Balkwill ◽  
S. E. Stevens
Keyword(s):  
Growth Medium ◽  
Green Alga ◽  
Natural Habitat ◽  
Iron Limitation ◽  
Natural Environments ◽  
Blue Green Alga ◽  
Marine Cyanobacterium ◽  
Natural Systems ◽  
Thin Sectioning ◽  
Agmenellum Quadruplicatum

Agmenellum quadruplicatum is a unicellular, non-nitrogen-fixing, marine cyanobacterium (blue-green alga). The ultrastructure of this organism, when grown in the laboratory with all necessary nutrients, has been characterized thoroughly. In contrast, little is known of its ultrastructure in the specific nutrient-limiting conditions typical of its natural habitat. Iron is one of the nutrients likely to limit this organism in such natural environments. It is also of great importance metabolically, being required for both photosynthesis and assimilation of nitrate. The purpose of this study was to assess the effects (if any) of iron limitation on the ultrastructure of A. quadruplicatum. It was part of a broader endeavor to elucidate the ultrastructure of cyanobacteria in natural systemsActively growing cells were placed in a growth medium containing 1% of its usual iron. The cultures were then sampled periodically for 10 days and prepared for thin sectioning TEM to assess the effects of iron limitation.

Effects of amino acids on the blue-green alga (cyanobacteria) Tolypothrix scytonemoides (Gardner) Geitler

2006 ◽  
Vol 8 (3) ◽  
pp. 286-293
Author(s):  
Uma Maheshwari Rajendran ◽  
Elango Kathirvel ◽  
Anand Narayanaswamy
Keyword(s):  
Amino Acids ◽  
Green Alga ◽  
Blue Green Alga
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