Phytoregulating action of bacterial paracetamol degradation products

Products of bacterial paracetamol degradation by Rhodococcus ruber IEGM 77 cells were shown to be humic-like substances. According to our data, the molecules of the products of bacterial paracetamol deg-radation comprise “symmetric” and “asymmetric” sites, including aminophenol, phenoxazine, indole and benzofuran fragments. The chemical structures of these fragments are based on aromatic and quinoid rings with equivalent substituents, i.e. phenol hydroxyl and nitrogen-containing functional groups, in para- (“symmetric”) and meta- (“asymmetric”) positions. The products of bacterial paracetamol degrada-tion were found to produce a phytoregulating action on seed germination of soft wheat Triticum aestivum L. due to the influence of “symmetric” and “asymmetric” molecular sites on the functional peroxidase ac-tivity. It was experimentally proved that the phytostimulating effect depends on the plant growth phase and concentrations of substances contained in water extracts from products of bacterial paracetamol deg-radation.