Article

Antibiotic production by the cyanobacteria Oscillatoria angustissima and Calothrix parietina

Botany Department, Faculty of Science, Assiut University, Assiut, Egypt
Environmental Toxicology and Pharmacology DOI:10.1016/S1382-6689(99)00027-7 pp.33-37

ABSTRACT The accumulation of antibiotic in the medium is temperature dependent and not in direct proportion to growth parameters. The cyanobacterial product suppressed growth of some natural isolates of cyanobacteria and green algae. It inhibits the growth rate and oxygen evolution of the green alga, Chlorella fusca. The antibiotic also inhibits the growth of bacteria and some fungi, especially the dermatophytes. Generally eukaryotic organisms were less sensitive than prokaryotic. Experimental mice were unaffected by the antibiotic. The Oscillatoria antibiotic does not structurally resemble to cyanobacterin.

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Keywords

antibiotic
 
bacteria
 
Chlorella fusca
 
cyanobacteria
 
cyanobacterial product suppressed growth
 
cyanobacterin
 
direct proportion
 
eukaryotic organisms
 
Experimental mice
 
green alga
 
green algae
 
Oscillatoria antibiotic
 
oxygen evolution
 
sensitive