scholarly journals Dark Heterotrophic Growth Conditions Result in an Increase in the Content of Photosystem II Units in the Filamentous Cyanobacterium Anabaena variabilis ATCC 29413

1993 ◽  
Vol 103 (3) ◽  
pp. 971-977 ◽  
Author(s):  
R. M. Mannan ◽  
H. B. Pakrasi
Keyword(s):  
Photosystem Ii ◽  
Growth Conditions ◽  
Anabaena Variabilis ◽  
Filamentous Cyanobacterium ◽  
Heterotrophic Growth ◽  
Cyanobacterium Anabaena

Bioenergetics Studies of the Cyanobacterium Anabaena variabilis

1987 ◽  
Vol 42 (11-12) ◽  
pp. 1280-1284 ◽  
Author(s):  
Siegfried Scherer ◽  
Heike Sadowski ◽  
Peter Böger
Keyword(s):  
Electron Transport ◽  
Photosystem Ii ◽  
Cytochrome B ◽  
Anabaena Variabilis ◽  
Electron Donors ◽  
Free System ◽  
Low Concentrations ◽  
Cyanobacterium Anabaena ◽  
A Cell ◽  
C Complex

A cell-free system exhibiting both photophosphorylation (P/2e= 1) and oxidative phosphoryltion (P/O up to 0.8) is described for the cyanobacterium Anabaena variabilis. NADH ant NADPH were found to be equally effective as electron donors for oxidative phosphorylation. Low concentrations of UHDBT, an inhibitor of the cytochrome b/c complex of mitochondria ant loroplasts, were found to inhibit photosystem-II electron transport reactions, but did not affet the cytochrome b6/f-complex of Anabaena. The inhibition by myxothiazol, antimycin and heptyihydroxyquinoline corroborates the hypothesis that both respiration and photosynthesis share the cytochrome b6/f-complex.

Quantitative and qualitative extraction of RNA from a filamentous cyanobacterium Anabaena variabilis PCC 7937

2009 ◽  
Vol 22 (1) ◽  
pp. 113-116 ◽  
Author(s):  
Shailendra P. Singh ◽  
Rajeshwar P. Sinha ◽  
Viktor Daiker ◽  
Donat-P. Häder
Keyword(s):  
Anabaena Variabilis ◽  
Filamentous Cyanobacterium ◽  
Cyanobacterium Anabaena

The ferredoxin-encoding fdxN gene of the filamentous cyanobacterium Anabaena variabilis ATCC 29413 is not essential for nitrogen fixation

1997 ◽  
Vol 136 (3) ◽  
pp. 419-423 ◽  
Author(s):  
BERND MASEPOHL ◽  
KIRSTEN GORLITZ ◽  
URSULA MONNERJAHN ◽  
BRITTA MOSLER ◽  
HERBERT BOHME
Keyword(s):  
Nitrogen Fixation ◽  
Anabaena Variabilis ◽  
Filamentous Cyanobacterium ◽  
Cyanobacterium Anabaena

Effect of light intensity on the ultrastructure of the filamentous cyanobacterium, Anabaena variabilis

1988 ◽  
Vol 46 ◽  
pp. 300-301
Author(s):  
C. S. Bricker ◽  
S. R. Barnum ◽  
B. Huang ◽  
J. G. Jaworskl
Keyword(s):  
Fatty Acid ◽  
Light Intensity ◽  
Acid Content ◽  
Fatty Acid Content ◽  
Anabaena Variabilis ◽  
Chloroplast Envelope ◽  
Major Constituent ◽  
Filamentous Cyanobacterium ◽  
Photosynthetic Membrane ◽  
Effect Of Light

Cyanobacteria are Gram negative prokaryotes that are capable of oxygenic photosynthesis. Although there are many similarities between eukaryotes and cyanobacteria in electron transfer and phosphorylation during photosynthesis, there are two features of the photosynthetic apparatus in cyanobacteria which distinguishes them from plants. Cyanobacteria contain phycobiliproteins organized in phycobilisomes on the surface of photosynthetic membrane. Another difference is in the organization of the photosynthetic membranes. Instead of stacked thylakolds within a chloroplast envelope membrane, as seen In eukaryotes, IntracytopIasmlc membranes generally are arranged in three to six concentric layers. Environmental factors such as temperature, nutrition and light fluency can significantly affect the physiology and morphology of cells. The effect of light Intensity shifts on the ultrastructure of Internal membrane in Anabaena variabilis grown under controlled environmental conditions was examined. Since a major constituent of cyanobacterial thylakolds are lipids, the fatty acid content also was measured and correlated with uItrastructural changes. The regulation of fatty acid synthesis in cyanobacteria ultimately can be studied if the fatty acid content can be manipulated.

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