Аннотация:Long-term conservation of plants in vitro means setting up conditions in which plants slow down their growth, which reduces the frequency of subculture needed to keep the material alive. Fall of cultivation temperature is frequently used for preservation of ornamental plants’ cultures and of lilac’s cultivars as well. For a better understanding of processes in in vitro culture, a comparative transcriptome analysis of vegetative apices of Syringa vulgaris L. during dormancy or in the phase of active growth in vivo and in vitro was carried out. A pairwise comparison of samples showed that a decrease in the temperature of lilac’s microshoot cultivation down to +10 °C leads to the formation of a response similar to the response to oxidative stress. The changes in gene expression similar to such stress response persist within active shoots growth in sterile culture after their transfer to standard
cultivation conditions (+22 °C).