At the variable environmental conditions plant growth and development are under the control of different factors triggered shifts in hormonal balance and followed changes in intensity of hormone-induced gene expression. Root-specific expression of early auxin-regulated genes, belonged to Aux/IAAs, SAURs, ARFs и GH3s gene families, was tested with specially designed chip. An auxin treatment (15, 30 and 60 min) led to increase of IAA1, IAA3, IAA5, IAA11, IAA19 and GH3-1, GH3-3, GH3-5 genes. Intensification of SAUR9 and SAUR10 genes expression was less significant and appeared only at 30 min.