[Conditions for cyanobacteria L-transformation]

Anabaena variabilis and Chlorogloea fritschii can easily form L-like colonies that are characterized by their appearance and the morphology of component structures. The colonies consist of morphological elements typical of the L-variants of chemoheterotrophic bacteria: filaments, "grains", ring-shaped cells, etc. Data are presented pertinent to the functional activity of the photosynthetic apparatus of these organisms subjected to L-transformation.