title: Effect of rifampicin (3-(4-methylpiperazinyl-iminomethyl)rifamycin) on heterocyst differentiation in the blue-green algae Anabaena and Calothrix.
abstract: Chains of multiple heterocysts form in Anabaena und Calothrix filaments on treatment with rifampicin. The multiple heterocysts form irrespective of whether the rifampicin treatment is given in combined nitrogen-free or supplemented medium. This suggests the possibility of involvement of a species of RNA or of protein as intracellular heterocyst inhibitor and indicates that some latent pattern-determining mechanism may operate in the combined nitrogen medium.
mesh_terms: D003470:Culture Media; D000458:Cyanobacteria / Q000166:cytology / Q000187:drug effects* / Q000378:metabolism; D005947:Glucose / Q000378:metabolism; D009584:Nitrogen / Q000378:metabolism; D012293:Rifampin / Q000494:pharmacology*
chemical_list: D003470:Culture Media; D005947:Glucose; D009584:Nitrogen; D012293:Rifampin