[Influence of propagating electrical signals on delayed luminescence of geranium leaves. II. Theoretical analysis].

A mathematical model of delayed luminescence was devised. It is based on the description of primary photosynthetic reactions, which takes the donor and acceptor parties of photosystem II and the electrochemical gradient on thylakoid membranes into account. The model was used for the theoretical analysis of the mechanisms of changes in delayed luminescence characteristics, induced by variation potentials.

[Stress in plants: physiological approach].

The problem of stress in current plant physiology is examined. The review of different points of view on this problem is given.

[Influence of propagating electrical signals on delayed fluorescence of geranium leaves. 1. Experimental analysis].

It was shown that local damaging stimulation of geranium graft induced the generation and propagation of electrical signals (variation potential), which changed the parameters of delayed luminescence in the leaf blade. The responses of delayed luminescence included two stages, which probably occur by different mechanisms.

[Propagated electrical signals in plants].

The present paper generalizes the new data and gives an account of the current notions about properties, mechanisms of generation, and functional role of propagated electrical signals in the form of action potentials and variation potentials in plants.

[Do different speed types of action potentials exist in higher plants?].

The problem of paradoxically different values of speeds of the propagation of action potentials in conduction pathways of higher plants is considered. Possible causes of this phenomenon are discussed.