Lipids peroxidation of wood plants seedlings under the volatile organic compounds action

Abstract

One of the criteria for plant adaptation to the volatile organic compounds action can be the lipid peroxidation intensity processes as a result of destructive oxidative processes ratio and the plants activity antioxidant protection. In this regard, the aim of the study was a comparative study of volatile various doses organic compounds effect (o-xylol, benz(a)pyrene, butyl acetate) on the content of malondialdehyde (MDA) in woody plants seedlings under specified experimental conditions. The results of an experiment on processing leaf blades of urban environments woody plants seedlings with volatile hydrocarbons and their mixture indicate that the effect of o-xylol, butyl acetate and a mixture of butyl acetate and o-xylol on the malonic dialdehyde content in drooping birch Betula pendula Roth. during the first days after exposure, it was manifested in the accumulation of lipid peroxidation products, whereas after three days of the experiment, the plant response in this case was expressed as a decrease in the content of MDA and the intensity of the lipid peroxidation process. Benz(a)pyrene in drooping birch caused a higher content of MDA three days after treatment. In the pyramidal poplar, the character of o-xylol influence and a butyl acetate and o-xylol mixture over the experiment course was similar to the drooping birch and was expressed in the lipid peroxidation products accumulation one day after treatment. Benz(a)pyrene was the cause of the increased malondialdehyde content one day after treatment, butyl acetate – after three days of the experiment. The combined processing of birch seedlings leaf blades with a butyl acetate and o-xylol mixture made it possible for these compounds to enhance each other's toxic effect compared to their action alone, with the exception of o-xylol three days after treatment with the mixture in the maximum dose. In pyramidal poplar, unlike birch, suspended butyl acetate in the mixture weakened the o-xylol toxic effect in comparison with its effect in the form of a single solution, and o-xylol weakened the effect of butyl acetate. In general, in the studied wood seedlings, the most potent compounds one cluster in the processes of membrane lipid peroxidation compared with the control can include benz(a)pyrene (in birch), butyl acetate and a mixture of butyl acetate and o-xylol (at the poplar pyramidal).