ИСТИНА

The peptides regulate of vital activity in eukaryotes, it is gene-specific, has a signal regulatory nature and is probably epigenetic. Short exogenous peptides at a concentration of 10-8 M stimulate the growth and development of tobacco calluses Nicotiana tabacum L. Around zero magnetic field and a constant magnetic field can be used to regulate the differentiation of plant tissues in vitro. As a result, along with morphological changes of the action of peptides and the magnetic field on tobacco calluses, changes in the ultrastructure of cell compartments, in particular, nuclei and mitochondria, were observed. Significant differences in the packing of chromatin in the presence of peptides both in normal conditions and under the action of NaCl, as well as in the magnetic field, are revealed.