[Communication of cyanobacteria with plant partners during association formation].

Data are presented on the physiological diagnostics of cyanobacterial communication with higher plants in natural symbioses (plant syncyanoses) and in model associations, as well as on the interaction of the partners without spatial integration. Emphasis is placed on changes in cyanobacterial features important for symbiogenesis. The multicomponent structure and the possible nature of the factors that enable partner communications are discussed with hormogonia formation and taxis as an example.